2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 Owners Manual
2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 Manual
2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 manual content summary:
- 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 1
READ THIS MANUAL CAREFULLY! It contains important safety information. OWNER'S MANUAL YFM66FGX WARNING This ATV should not be ridden by anyone under 16 years of age. LIT-11626-21-03 23D-28199-10 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 2
EBU17091 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 3
of your ATV, please consult a Yamaha dealer. AN IMPORTANT SAFETY MESSAGE: G READ THIS MANUAL TOGETHER WITH TIPS FOR THE ATV RIDER CAREFULLY AND COMPLETELY BEFORE OPERATING YOUR ATV. MAKE SURE YOU UNDERSTAND ALL INSTRUCTIONS. G PAY CLOSE ATTENTION TO THE WARNING AND CAUTION LABELS ON THE ATV. G NEVER - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 4
IN SERIOUS INJURY OR DEATH. Particularly important information is distinguished in this manual by the following notations: The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS INVOLVED! Failure to follow WARNING instructions could result in severe injury or death to the ATV operator - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 5
time of manufacture. Please check your local riding laws and regulations before operating this ATV. EBU17381 AFFIX DEALER LABEL HERE YFM66FGX OWNER'S MANUAL ©2007 by Yamaha Motor Corporation, U.S.A. 1st edition, March 2007 All rights reserved. Any reprinting or unauthorized use without the written - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 6
EWB00010 WARNING Indicates a potential hazard that could result in serious injury or death. EBU17420 TABLE OF CONTENTS SAFETY INFORMATION ...1-1 LOCATION OF THE WARNING AND SPECIFICATION LABELS ...2-1 DESCRIPTION ...3-1 Left view ...3-1 Right view...3-1 Controls and instruments ...3-2 INSTRUMENT - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 7
31 SLIDING AND SKIDDING ...7-32 WHAT TO DO IF...7-33 WHAT TO DO...7-33 PERIODIC MAINTENANCE AND MINOR REPAIR ...8-1 Owner's manual and tool kit ...8-1 Periodic maintenance chart for the emission control system ...8-3 General maintenance and lubrication chart ...8-5 Removing and installing panels - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 8
55 Removing a wheel ...8-55 Installing a wheel ...8-56 Troubleshooting ...8-57 Troubleshooting charts ...8-59 CLEANING AND STORAGE ...9-1 Cleaning ...9-1 Storage 11-3 Maintenance record ...11-4 YAMAHA MOTOR CORPORATION, U.S.A. ATV LIMITED WARRANTY ...11-5 YAMAHA EXTENDED SERVICE (Y.E.S.) ...11-7 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 9
riding on hills or over obstacles, if you fail to take proper precautions. SEVERE INJURY OR DEATH can result if you do not follow these instructions: G Read this manual and all labels carefully and follow the operating procedures described. G Never operate an ATV without proper training or - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 10
time you use it to make sure it is in safe operating condition. Always follow the inspection and maintenance procedures and schedules described in this manual. Always keep both hands on the handlebars and both feet on the footboards of the ATV during operation. Always go slowly and be extra careful - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 11
. G Never exceed the stated load capacity for an ATV. Cargo should be properly distributed and securely attached. Reduce speed and follow instructions in this manual for carrying cargo or pulling a trailer. Allow greater distance for braking. FOR MORE INFORMATION ABOUT ATV SAFETY, call the Consumer - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 12
EWB00021 WARNING 1 POTENTIAL HAZARD Improper handling of gasoline. WHAT CAN HAPPEN Gasoline can catch fire and you could be burned. HOW TO AVOID THE HAZARD Always turn off the engine when refueling. Do not refuel right after the engine has been running and is still very hot. Do not spill gasoline - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 13
WHAT CAN HAPPEN Exhaust fumes are poisonous and may cause loss of consciousness and death within a short time. HOW TO AVOID THE HAZARD Always operate your ATV in an area with adequate ventilation. 1 1-5 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 14
EBU17660 LOCATION OF THE WARNING AND SPECIFICATION LABELS 2 2-1 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 15
EBU17670 Read and understand all of the labels on your ATV. These labels contain important information for safe and proper operation. Never remove any labels from your ATV. If a label becomes difficult to read or comes off, request a replacement label from your Yamaha dealer. 2 2-2 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 16
2 2-3 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 17
2 2-4 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 18
EBU17680 DESCRIPTION EBU17690 EBU17700 Left view 3 Right view 1. Radiator cap 2. Fuel tank cap 3. Fuel cock 4. Oil filter cartridge 5. Throttle stop screw 6. Fuses 7. Engine oil filler cap 8. Recoil starter 9. Coolant reservoir 10.Drive select lever box check hose 11.V-belt cooling duct check - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 19
EBU17712 Controls and instruments NOTE: The ATV you have purchased may differ slightly from the figures shown in this manual. 3 1. 2. 3. 4. 5. 6. 7. Drive select lever Rear brake lever Handlebar switches Starter (choke) Multifunction display Main switch On-Command four-wheel-drive/differential - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 20
EBU17720 INSTRUMENT AND CONTROL FUNCTIONS EWB00010 WARNING Indicates a potential hazard that could result in serious injury or death. 4 EBU17760 Main switch The positions of the main switch are as follows: ON All electrical systems are supplied with power. The headlights and taillight come on - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 21
EBU17813 Indicator lights and warning light Furthermore, this indicator light flashes when the engine is being raced for 10 seconds or more. NOTE: If the indicator light flashes under any other circumstances or the speedometer does not show the speed while riding, have a Yamaha dealer check the - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 22
G Start the engine after making sure that the warning light is out. Continuous use while the warning light is on may cause damage to the engine. EBU17970 Park indicator light " " This indicator light comes on when the transmission is in the park position. EBU17980 EBU17961 4 On-Command four- - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 23
EBU18040 Multifunction display G G G G two tripmeters (which show the distance traveled since they were last set to zero) a clock an hour meter (which shows the total time the key has been turned to "ON") a fuel meter 4 1. 2. 3. 4. 5. 6. 7. 8. Speedometer Fuel meter "H" button "M" button Clock/ - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 24
Clock mode Pushing the " "/" " button switches the display between the clock mode "CLOCK" and the hour meter mode "HOUR" in the following order: CLOCK → HOUR → CLOCK To set the clock 1. Set the display to the clock mode. 2. Push the " "/" " button until the clock starts flashing. 3. Set the hours by - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 25
Handlebar switches Start switch " " Push this switch to crank the engine with the starter. ECB00050 CAUTION: See the starting instructions on page 6-1 prior to starting the engine. 4 EBU18151 1. 2. 3. 4. Light switch " / /OFF" Start switch " " Engine stop switch " / " Override switch "OVERRIDE - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 26
EBU18180 Override switch "OVERRIDE" 4 1. Override switch "OVERRIDE" Top speed is normally limited when operating in differential gear lock. If conditions require more engine power when riding forward, push and hold this switch to override the differential gear lock speed limiting function. (See - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 27
WHAT CAN HAPPEN All wheels turn at the same speed when the differential is locked, so it takes more effort to turn the ATV. The effort needed to turn increases with the riding speed. You may lose control and have an accident if you cannot make a sharp enough turn for the speed you are traveling. HOW - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 28
EWB00120 EBU18243 WARNING POTENTIAL HAZARD Changing from two-wheel drive to fourwheel drive or from four-wheel drive to twowheel drive while the ATV is moving. WHAT CAN HAPPEN The ATV handles differently in two-wheel drive than in four-wheel drive in some circumstances. Changing from two-wheel - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 29
To lock the differential gear in four-wheel drive, make sure the On-Command four-wheel-drive switch is pushed in to the "4WD" position. 4 1. On-Command differential gear lock switch "4WD"/"LOCK" 1. Differential gear lock lever 2. On-Command four-wheel-drive switch "2WD"/"4WD" To release the - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 30
EWB00091 WARNING POTENTIAL HAZARD Changing from four-wheel drive to fourwheel-drive differential gear lock or vice-versa while the ATV is moving. WHAT CAN HAPPEN The ATV handles differently in four-wheel drive than in differential gear lock in some circumstances. Changing from four-wheel drive to - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 31
G When the ATV is in four-wheel-drive differential gear lock, the maximum traveling speed is limited to 35 km/h (22 mi/h). However, if conditions require full engine power to be available, push and hold the override switch to disable the differential gear lock speed limiter. (See page 4-7 for a - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 32
before you start the engine. If it does not work smoothly, check for the cause. Correct the problem before riding the ATV. Consult a Yamaha dealer if you can't find or solve the problem yourself. EBU18311 crease the maximum engine power available and the maximum speed of the ATV, turn the adjusting - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 33
WHAT CAN HAPPEN The throttle cable could be damaged. Improper throttle operation could result. You could lose control, have an accident or be injured. HOW TO AVOID THE HAZARD Do not turn the adjusting screw out more than 12 mm (0.47 in). Always make sure the throttle lever free play is adjusted to - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 34
EBU18611 Drive select lever The drive select lever is used to shift your ATV into the low-range, high-range, neutral, reverse and park positions. See the "Operating the drive select lever and driving in reverse" section on page 6-3 for the drive select lever operation. 4 1. Brake pedal 1. Drive - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 35
EBU18720 Fuel tank cap Remove the fuel tank cap by turning it counterclockwise. 4 1. Recoil starter EWB00290 WARNING POTENTIAL HAZARD Starting the engine without setting the drive select lever to the park position. WHAT CAN HAPPEN The ATV could start to move unexpectedly, which could cause an - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 36
not exceed 10%. Gasohol containing methanol is not recommended by Yamaha because it can cause damage to the fuel system or ATV performance problems. EWB00270 1. Fuel level 2. Fuel tank filler tube Recommended fuel: UNLEADED GASOLINE ONLY Fuel tank capacity: 20.0 L (5.28 US gal) (4.40 Imp.gal) Fuel - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 37
WHAT CAN HAPPEN Fuel can spill, which can cause a fire and severe injury. Fuel expands when it heats up. If the fuel tank is overfilled, fuel could spill out due to heat from the engine or the sun. HOW TO AVOID THE HAZARD Do not overfill the fuel tank. Be careful not to spill fuel, especially on the - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 38
ON RES 4 1. Arrow mark pointing to "ON" 1. Arrow mark pointing to "RES" With the fuel cock lever in this position, fuel flows to the carburetor. Turn the fuel cock lever to this position when starting the engine and riding. This indicates reserve. With the fuel cock lever in this position, the - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 39
Move the starter (choke) in direction (b) to turn off the starter (choke). See the "Starting a cold engine" section on page 6-1 for proper operation. 4 1. Seat 2. Seat lock lever 1. Starter (choke) " EBU18880 " Seat To remove the seat Pull the seat lock lever upward and pull up the seat at the - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 40
compartment. 4 1. Projection 2. Seat holder EBU27090 Storage compartment The storage compartment is located under the seat. (See page 4-20.) When storing the owner's manual or other documents in the storage compartment, be sure to wrap them in a plastic bag so that they will not get wet. When - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 41
EBU18960 Front carrier G G Do not exceed the load limit of 45.0 kg (99 lb) for the front carrier. Do not exceed the maximum load of 220.0 kg (485 lb) for the ATV. Turn the adjusting ring in direction (a) to increase the spring preload and thereby harden the suspension, and in direction (b) to - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 42
4 WHAT CAN HAPPEN Uneven adjustment can cause poor handling and loss of stability, which could lead to an accident. HOW TO AVOID THE HAZARD Always adjust the shock absorber assemblies on the left and right side to the same setting. EBU19180 Auxiliary DC jack 1. Special wrench Spring preload - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 43
Maximum rated capacity for the auxiliary DC jack: DC 12 V, 120 W (10 A) 4. When the auxiliary DC jack is not being used, cover it with the cap. ECB00120 1. Auxiliary DC jack cap CAUTION: G Do not use accessories requiring more than the above maximum capacity. This may overload the circuit and - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 44
the inspection and maintenance procedures and schedules described in the Owner's Manual. NOTE: The maintenance of some items in the table has to dealer. Refer to the periodic maintenance charts on page 8-3 to determine which service should be performed by a Yamaha dealer. ITEM Fuel ROUTINE • Check - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 45
ITEM Engine oil Final gear oil Differential gear oil Coolant ROUTINE • Check oil level in engine, and add recommended oil to specified level if necessary. • Check ATV for oil leakage. Correct if necessary. • Check ATV for oil leakage. Correct if necessary. • Check ATV for oil leakage. Correct if - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 46
ITEM Brake levers Axle boots Chassis fasteners Instruments, lights and switches ROUTINE • Make sure that operation is smooth. Lubricate lever pivoting points if necessary. • Check for cracks or damage, and replace if necessary. • Make sure that all nuts, bolts and screws are properly tightened. • - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 47
EBU19530 EBU19590 Fuel Make sure that there is sufficient fuel in the tank. (See page 4-16.) EWB00500 Final gear oil Make sure that the final gear oil is at the specified level. Add oil as necessary. (See page 8-22.) EBU19600 WARNING POTENTIAL HAZARD Improper care when refueling. WHAT CAN HAPPEN - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 48
EWB00490 G WARNING POTENTIAL HAZARD Removing the radiator cap when the engine and radiator are still hot. WHAT CAN HAPPEN You could be burned by hot fluid and steam blown out under pressure. HOW TO AVOID THE HAZARD Wait for the engine to cool before removing the radiator cap. Always use a thick - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 49
the brakes at the start of every ride. Do not ride the ATV if you find any problem with the brakes. If a problem cannot be corrected by the adjustment procedures provided in this manual, have a Yamaha dealer check for the cause. EBU19761 5 Throttle lever Check the operation of the throttle lever - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 50
EBU19781 Tires EWB00561 WARNING POTENTIAL HAZARD Operating this ATV with improper tires, or with improper or uneven tire pressure. WHAT CAN HAPPEN Use of improper tires on this ATV, or operation of this ATV with improper or uneven tire pressure, may cause loss of control, increasing your risk of - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 51
G G G Tire pressure below the minimum specified could cause the tire to dislodge from the rim under severe riding conditions. Minimum tire pressure: Front: 32.0 kPa (4.6 psi) (0.320 kgf/cm²) Rear: 27.0 kPa (3.9 psi) (0.270 kgf/cm²) Use no more than the following pressures when seating the tire - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 52
5 Recommended pressure: Front 35.0 kPa (5.0 psi) (0.350 kgf/cm²) Rear 30.0 kPa (4.3 psi) (0.300 kgf/cm²) Minimum: Front 32.0 kPa (4.6 psi) (0.320 kgf/cm²) Rear 27.0 kPa (3.9 psi) (0.270 kgf/cm²) Maximum: Front 38.0 kPa (5.5 psi) (0.380 kgf/cm²) Rear 33.0 kPa (4.8 psi) (0.330 kgf/cm²) EBU19830 1. - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 53
familiar with all controls. WHAT CAN HAPPEN Loss of control, which could cause an accident or injury. HOW TO AVOID THE HAZARD Read the Owner's Manual carefully. If there is a control or function you do not understand, ask your Yamaha dealer. 6 CAUTION: See the "Engine break-in" section on page - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 54
3. Shift the drive select lever into the neutral or park position. The corresponding indicator light should come on. If the indicator light does not come on, have a Yamaha dealer check the electrical circuit. NOTE: The engine can be started under the following conditions: G The drive select lever is - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 55
to Low-range 1. Bring the ATV to a complete stop. 2. Apply the brake pedal, and then shift by moving the drive select lever along the shift guide. NOTE: Make sure that the drive select lever is completely shifted into position. 6 6-3 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 56
Shift from neutral to reverse or from reverse to park and vice versa by moving the drive select lever along the shift guide. 6 1. 2. 3. 4. 5. 6. Drive select lever L (Low-range) H (High-range) N (Neutral) R (Reverse) P (Park) 3. Release the brake pedal, and then open the throttle lever gradually - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 57
G Due to the synchronizing mechanism in the engine, the indicator light may not come on until the ATV starts moving. G For ATVs not equipped with an odometer or hour meter, follow the figures given in hours. 4. Check behind for people or obstacles, and then release the brake pedal. 5. Open the - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 58
ECB00220 CAUTION: If any engine trouble should occur during the engine break-in period, immediately have a Yamaha dealer check the ATV. EBU20690 Parking When parking the ATV, stop the engine, shift - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 59
EBU20910 Accessories and loading EBU20920 Accessories Accessories can affect the handling and control of your ATV. Keep the following in mind when considering an accessory or operating an ATV which has accessories. G Choose only accessories designed for your ATV. Your Yamaha dealer has a variety - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 60
6 MAXIMUM LOADING LIMIT ATV loading limit (total weight of rider, cargo, accessories, and tongue): 220.0 kg (485 lb) Front carrier: 45.0 kg (99 lb) Rear carrier: 85.0 kg (187 lb) Storage compartment: 2.0 kg (4 lb) Trailer hitch: Pulling load (total weight of trailer and cargo): 5390.00 N (1212 lbf) - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 61
EWB00750 WARNING POTENTIAL HAZARD Overloading this ATV or carrying or towing cargo improperly. WHAT CAN HAPPEN Could cause changes in ATV handling which could lead to an accident. HOW TO AVOID THE HAZARD Never exceed the stated load capacity for this ATV. Cargo should be properly distributed and - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 62
EBU21131 RIDING YOUR ATV 7 7-1 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 63
be used for recreation. This section, Riding your ATV, provides general ATV riding instructions for recreational riding. The skills and techniques described in this section, however, are you have read this Owner's Manual completely and understand the operation of the controls. Pay partic- 7 7-2 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 64
in the course and the operating techniques described in this Owner's Manual. For more information about the training course, contact an authorized age. EWB00901 WARNING 7 POTENTIAL HAZARD Operating this ATV without proper instruction. WHAT CAN HAPPEN The risk of an accident is greatly increased if - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 65
WHAT CAN HAPPEN Use by children of ATVs that are not recommended for their age can lead to severe injury or death of the child. HOW TO AVOID THE HAZARD A child under 16 should never operate an ATV with engine size greater than 90 cc. WHAT CAN HAPPEN Greatly reduces your ability to balance and - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 66
Apparel EWB00920 WARNING POTENTIAL HAZARD Operating this ATV without wearing an approved motorcycle helmet, eye protection and protective clothing. WHAT CAN HAPPEN Operating without an approved motorcycle helmet increases your chances of a severe head injury or death in the event of an accident. - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 67
HOW TO AVOID THE HAZARD Always wear an approved motorcycle helmet that fits properly. You should also wear: G eye protection (goggles or face shield) G gloves G boots G long-sleeved shirt or jacket G long pants 7 1. 2. 3. 4. 5. Protective clothing Goggles Gloves Boots Helmet 7-6 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 68
sure the ATV is in safe operating condition. Always follow the inspection and maintenance procedures and schedules described in the Owner's Manual. 7 EWB00930 WARNING POTENTIAL HAZARD Operating this ATV after consuming alcohol or drugs. WHAT CAN HAPPEN Could seriously affect your judgment. Could - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 69
accident. HOW TO AVOID THE HAZARD Always use the size and type tires specified in the Owner's Manual for this ATV on page 5-7. Always maintain proper tire pressure as described in the Owner's Manual on page 5-8. EWB00010 Do not operate at speeds too fast for your skills or the conditions. EWB00960 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 70
Speed limiter For riders less experienced with this model, the throttle lever housing is equipped with a speed limiter. The speed limiter keeps the throttle from fully opening, even when the throttle lever is pushed to the maximum. Turning in the adjusting screw limits the maximum engine power - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 71
ATV. Cargo should be properly distributed and securely attached. Reduce speed when carrying cargo or pulling a trailer. Allow greater distance for braking. Always follow the instructions in your Owner's Manual for carrying cargo or pulling a trailer. 7 7-10 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 72
During operation Always keep your feet on the footboards during operation, otherwise they may contact the rear wheels. WHAT CAN HAPPEN Removing even one hand or foot can reduce your ability to control the ATV or could cause you to lose your balance and fall off of the ATV. If you remove a foot from - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 73
should be genuine Yamaha or equivalent components designed for use on this ATV and should be installed and used according to instructions. If you have questions, consult an authorized ATV dealer. Modifications EWB01000 WARNING POTENTIAL HAZARD Operating this ATV with improper modifications. WHAT - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 74
Exhaust system The exhaust system on the ATV is very hot during and following operation. To prevent burns, avoid touching the exhaust system. Park the ATV in a place where pedestrians or children are not likely to touch it. EWB01010 WARNING POTENTIAL HAZARD Hot exhaust system. WHAT CAN HAPPEN Dry - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 75
HOW TO AVOID THE HAZARD Always avoid paved surfaces, including sidewalks, driveways, parking lots and streets. EWB01030 WARNING POTENTIAL HAZARD Operating this ATV on public streets, roads or highways. WHAT CAN HAPPEN You can collide with another vehicle. HOW TO AVOID THE HAZARD Never operate this - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 76
Know the terrain where you ride. Ride cautiously in unfamiliar areas. Stay alert for holes, rocks, or roots in the terrain, and other hidden hazards which may cause the ATV to upset. EWB01040 WARNING POTENTIAL HAZARD Failure to use extra care when operating this ATV on unfamiliar terrain. WHAT CAN - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 77
EWB01050 WARNING POTENTIAL HAZARD Failure to use extra care when operating on excessively rough, slippery or loose terrain. WHAT CAN HAPPEN Could cause loss of traction or ATV control, which could result in an accident, including an overturn. HOW TO AVOID THE HAZARD Do not operate on excessively - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 78
When riding in an area where you might not easily be seen, such as desert terrain, mount a caution flag on the ATV. DO NOT use the flag pole bracket as a trailer hitch. HOW TO AVOID THE HAZARD Always mount a caution flag on the ATV to make you more visible. Watch carefully for other vehicles. Do - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 79
is designed for off-road use only, and handling maneuvers are more difficult to perform on pavement. Shift to the park position and follow the instruction on page 6-1 to start the engine. Once it has warmed up you are ready to begin riding your ATV. Remember that the engine and exhaust - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 80
this skill be learned first at low speed. EWB01310 HOW TO AVOID THE HAZARD Always follow proper procedures for turning as described in this Owner's Manual. Practice turning at low speeds before attempting to turn at faster speeds. Do not turn at speeds too fast for your skills or the conditions - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 81
turn to avoid tipping over. Remember: Avoid higher speeds until you are thoroughly familiar with the operation of your ATV. 1. Lean towards inside of turn. 2. Support your weight on the outer footboard. 7 This procedure should be practiced at slow speed many times in a large off-road area with no - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 82
of control or cause the ATV to overturn. HOW TO AVOID THE HAZARD Always follow proper procedures for climbing hills as described in this Owner's Manual. Always check the terrain carefully before you start up any hill. Never climb hills with excessively slippery or loose surfaces. Shift your weight - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 83
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until you have mastered the turning technique as described in the Owner's Manual on level ground. Be very careful when turning on any hill. of a hill: Always follow proper procedures as described in the Owner's Manual. Avoid hills with excessively slippery or loose surfaces. Shift your weight to - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 85
uphill side or to a side if pointed straight uphill. Turn the ATV around and remount, following the procedure described in the Owner's Manual. 7 WARNING POTENTIAL HAZARD Stalling, rolling backwards or improperly dismounting while climbing a hill. WHAT CAN HAPPEN Could result in ATV overturning. HOW - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 86
control or cause the ATV to overturn. HOW TO AVOID THE HAZARD Always follow proper procedures for going down hills as described in this Owner's Manual. Note: a special technique is required when braking as you go down a hill. Always check the terrain carefully before you start down any hill. Shift - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 87
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hill until you have mastered the turning technique as described in the Owner's Manual on level ground. Be very careful when turning on any hill. Avoid a hill: Always follow proper procedures as described in the Owner's Manual. Avoid hills with excessively slippery or loose surfaces. Shift your weight - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 89
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an accident. HOW TO AVOID THE HAZARD Never operate this ATV in fast flowing water or in water deeper than that specified in your Owner's Manual. Remember that wet brakes may have reduced stopping ability. Test your brakes after leaving water. If necessary, apply them several times to let friction - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 91
1. Air filter case check hose ECB00270 CAUTION: After riding your ATV in water, be sure to drain the trapped water by removing the check hose at the bottom of the air filter case, the V-belt cooling duct check hose and the drive select lever box check hose. Also, remove the V-belt case drain plug - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 92
ride over large obstacles, such as large rocks or fallen trees. When you go over obstacles, always follow proper procedures as described in the Owner's Manual. 1. V-belt case drain plug 7-31 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 93
SLIDING AND SKIDDING Care should be used when riding on loose or slippery surfaces since the ATV may slide. If unexpected and uncorrected, sliding could lead to an accident. To reduce the tendency for the front wheels to slide in loose or slippery conditions, positioning your weight over the front - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 94
on extremely slippery surfaces such as ice, since all control may be lost. EWB01170 WHAT TO DO IF...This section is designed to be a reference guide only. Be sure to read each section on riding techniques completely. WHAT TO DO...G If your ATV doesn't turn when you want it to: Bring - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 95
G G THE REAR BRAKE IF THE ATV IS IN 2WD - the ATV may tip over on top of you. Dismount the ATV on the uphill side. (See page 7-21.) If your ATV is traversing a sloping surface: Be sure to ride with your weight positioned towards the uphill side of the ATV to maintain proper balance. If the ATV - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 96
maintenance and lubrication chart should be considered as a general guide under normal riding conditions. However, DEPENDING ON THE WEATHER dealer perform the service if you are not familiar with maintenance work. EBU27100 Owner's manual and tool kit Be sure to put this owner's manual in the plastic - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 97
this ATV and should be installed and used according to instructions. If you have questions, consult an authorized Yamaha ATV dealer. 1. Owner's manual 2. Owner's tool kit 3. Low-pressure tire gauge The service information included in this manual and the tools provided in the owner's tool kit are - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 98
EBU21742 Periodic maintenance chart for the emission control system NOTE: G For ATVs not equipped with an odometer or an hour meter, follow the month maintenance intervals. G For ATVs equipped with an odometer or an hour meter, follow the km (mi) or hours maintenance intervals. However, keep in - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 99
INITIAL NO. ITEM CHECK OR MAINTENANCE JOB Whichever comes first month km (mi) hours 6 7 * Exhaust system Spark arrester • Check for leakage and replace gasket(s) if necessary. • Check for looseness and tighten all screw clamps and joints if necessary. • Clean. 1 320 (200) 20 3 1300 (800) 80 6 EVERY - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 100
EBU21863 General maintenance and lubrication chart INITIAL NO. ITEM CHECK OR MAINTENANCE JOB Whichever comes first month km (mi) hours 1 Air filter element • Clean and replace if necessary. • Check operation and correct if necessary. • Check fluid level and ATV for fluid leakage, and correct if - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 101
INITIAL NO. ITEM CHECK OR MAINTENANCE JOB Whichever comes first month km (mi) hours 8 9 10 11 12 13 14 15 16 17 18 19 V-belt Chassis fasteners Shock absorber assemblies Stabilizer bushes Rear knuckle pivots Steering shaft Steering system Engine mount Axle boots Engine oil Engine oil filter - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 102
cable Throttle lever housing and cable Front and rear brake switches Lights and switches 8 24 * 25 26 * * EBU23070 NOTE: G The air filter needs more frequent service if you are riding in unusually wet or dusty areas. 8-7 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 103
G Hydraulic brake service • Regularly check and, if necessary, correct the brake fluid level. • Every two years replace the internal components of the brake master cylinders and calipers, and change the brake fluid. • Replace the brake hoses every four years and if cracked or damaged. 8 8-8 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 104
EWB00010 WARNING Indicates a potential hazard that could result in serious injury or death. EBU23090 Removing and installing panels The panels shown need to be removed to perform some of the maintenance jobs described in this chapter. Refer to this section each time a panel needs to be removed and - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 105
To install one of the panels 1. Insert the panel projections in the numerical order shown in the illustration, and then push inward on the area shown. 1. Panel A 1. Panel A 8 1. Panel D 8-10 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 106
1. Panel D 2. Install the seat. 8 Panel B To remove the panel Remove the bolts, and then take the panel off. 1. Panel B 2. Bolt To install the panel Place the panel in the original position and install the bolts. ECB00380 CAUTION: When installing the panel, be sure not to pinch the cables or - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 107
1. Front carrier stay cover 1. Carrier bolt (top) 8 1. Carrier bolt (top) 1. Carrier bolt (under the fenders) 2. Remove the quick fastener screws and pull the panel upward. 8-12 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 108
Panel E To remove the panel Remove the bolts, and then take the panel off. 1. Quick fastener screw 2. Panel C 8 To install the panel 1. Place the panel in the original position and install the quick fastener screws. 2. Install the front carrier by installing the bolts and tightening them to the - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 109
Panel G To remove the panel 1. Remove the seat. (See page 4-20.) 2. Remove the rear carrier by removing the bolts. 1. Panel F To install the panel Place the panel in its original position. 8 1. Carrier bolt (top) 8-14 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 110
1. Carrier bolt (under the fenders) 3. Remove the seat under bracket and the panel by pulling them off. 8 1. Seat under bracket 2. Panel G To install the panel 1. Place the panel and the seat under bracket in the original position. 2. Install the rear carrier by installing the bolts and - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 111
ATV is ridden normally). NOTE: If the spark plug shows a distinctly different color, the engine could be operating improperly. Do not attempt to diagnose such problems yourself. Instead, have a Yamaha dealer check the ATV. 8-16 8 1. Spark plug cap - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 112
2. Check the spark plug for electrode erosion and excessive carbon or other deposits, and replace it if necessary. Specified spark plug: NGK/DPR8EA-9 To install the spark plug 1. Measure the spark plug gap with a wire thickness gauge and, if necessary, adjust the gap to specification. 1. Spark plug - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 113
NOTE: If a torque wrench is not available when installing a spark plug, a good estimate of the correct torque is 1/4-1/2 turn past finger tight. However, the spark plug should be tightened to the specified torque as soon as possible. 4. Install the spark plug cap. 5. Install the panel. EBU23325 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 114
To change the engine oil (with or without oil filter cartridge replacement) 1. Remove panel F. (See page 8-9.) 2. Place the ATV on a level surface. 3. Start the engine, warm it up for several minutes, and then turn it off. 4. Place an oil pan under the engine to collect the used oil. 5. Remove the - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 115
NOTE: Skip steps 6-10 if the oil filter cartridge is not being replaced. 6. Remove panels D and E. (See page 8-9.) 7. Remove the oil filter cartridge with an oil filter wrench. 1. O-ring NOTE: Make sure that the O-ring is properly seated. 9. Install the new oil filter cartridge with an oil filter - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 116
12. Add the specified amount of the recommended engine oil, and then install and tighten the engine oil filler cap. Recommended oil: See page 10-1. Oil quantity: Without oil filter cartridge replacement: 1.90 L (2.01 US qt) (1.67 Imp.qt) With oil filter cartridge replacement: 2.00 L (2.11 US qt) (1. - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 117
G Make sure that no foreign material enters the crankcase. 2. Remove the final gear oil level check bolt, and then check the oil level in the final gear case. NOTE: The oil level should be at the brim of the check hole. 13. Start the engine, and then let it idle for several minutes while checking - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 118
3. Remove the final gear oil filler bolt, final gear oil level check bolt, and the final gear oil drain bolt to drain the oil from the final gear case. 1. Final gear oil filler bolt 4. Install the oil level check bolt and oil filler bolt, and then tighten them to the specified torques. 8 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 119
Tightening torques: Final gear oil level check bolt: 10 Nm (1.0 m·kgf, 7.2 ft·lbf) Final gear oil filler bolt: 23 Nm (2.3 m·kgf, 17 ft·lbf) 7. Check the final gear case for oil leakage. If oil is leaking, check for the cause. EBU23421 Differential gear oil 1. Final gear oil 2. Final gear oil level - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 120
2. Remove the differential gear oil filler bolt, and then check the oil level in the differential gear case. Tightening torque: Differential gear oil filler bolt: 23 Nm (2.3 m·kgf, 17 ft·lbf) To change the differential gear oil 1. Place the ATV on a level surface. 2. Place an oil pan under the - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 121
Tightening torque: Differential gear oil drain bolt: 10 Nm (1.0 m·kgf, 7.2 ft·lbf) 5. Add the recommended differential gear oil to the brim of the filler hole as shown. ECB00410 CAUTION: Be sure no foreign material enters the differential gear case. 6. Install the oil filler bolt, and then tighten - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 122
NOTE: The coolant level must be checked on a cold engine since the level varies with engine temperature. 2. Check the coolant level in the coolant reservoir. NOTE: The coolant should be between the minimum and maximum level marks. 3. If the coolant is at or below the minimum level mark, remove - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 123
is automatically switched on or off according to the coolant temperature in the radiator. G If the engine overheats, see page 8-59 for further instructions. EBU23592 3. Place a container under the engine, and then remove the coolant drain bolt. (Use a trough or a similar object as shown to prevent - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 124
1. Trough 1. Radiator cap 8 4. Remove the front carrier and panel C. (See page 8-9.) 5. Remove the radiator cap. 6. Remove panel D. (See page 8-9.) 7. Remove the coolant reservoir cap. 8. Disconnect the hose on the coolant reservoir side, and then drain the coolant from the coolant reservoir. - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 125
13. Pour the recommended coolant into the radiator until it is full. Antifreeze/water mixture ratio: 1:1 Recommended antifreeze: High-quality ethylene glycol antifreeze containing corrosion inhibitors for aluminum engines Coolant quantity: Radiator capacity (including all routes): 1.80 L (1.90 US qt - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 126
G If water has been added to the coolant, have a Yamaha dealer check the antifreeze content of the coolant as soon as possible, otherwise the effectiveness of the coolant will be reduced. NOTE: There is a check hose at the bottom of the air filter case. If dust or water collects in this hose, - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 127
1. Air filter case holder 2. Air filter case cover 1. Air filter element 3. Pull the air filter element out of the air filter case. 4. Remove the sponge material from the air filter element frame. 8 1. Unlock. 8-32 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 128
6. Squeeze the excess solvent out of the sponge material and let it dry. ECB00440 CAUTION: Do not twist the sponge material when squeezing it. 1. Air filter element frame 2. Sponge material 8 5. Wash the sponge material gently but thoroughly in solvent. EWB01900 WARNING POTENTIAL HAZARD Using - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 129
9. Pull the sponge material over the air filter element frame. 10. Insert the air filter element into the air filter case, and then install the air filter case cover by hooking the holders onto the air filter case. NOTE: Be sure to connect the breather hose to the air filter case cover. eas. Each - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 130
1. Bolt 8 2. Remove the tailpipe by pulling it out of the muffler. 3. Tap the tailpipe lightly, and then use a wire brush to remove any carbon deposits from the spark arrester portion of the tailpipe and inside of the tailpipe housing. 1. Tailpipe 2. Spark arrester 4. Insert the tailpipe into - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 131
WHAT CAN HAPPEN Could injure the eyes. Could cause burns. Could cause carbon monoxide poisoning, possibly leading to death. Could start a fire. HOW TO AVOID THE HAZARD When cleaning the spark arrester: Always let the exhaust system cool prior to touching exhaust components. Do not start the engine - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 132
ECB00480 CAUTION: The carburetor has been set and extensively tested at the Yamaha factory. Changing these settings without sufficient technical knowledge may result in poor performance of or damage to the engine. EBU24010 Adjusting the engine idling speed 1. V-belt case drain plug EBU23940 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 133
4. Check the engine idling speed and, if necessary, adjust it to specification by turning the throttle stop screw at the carburetor. To increase the engine idling speed, turn the throttle stop screw in direction (a), and to decrease it, turn the screw in direction (b). 5. Install the panel. - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 134
EBU24070 Adjusting the drive select lever safety system cable The drive select lever safety system cable stretches with use, which can result in improper function. Therefore, the safety system cable should be checked and adjusted at the intervals specified in the periodic maintenance and - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 135
1. Brake pad 2. Lining thickness 1. Brake pad 2. Lining thickness EBU24261 NOTE: The wheels need to be removed to check the brake pads. (See page 8-55.) EBU24221 Checking the brake fluid level Insufficient brake fluid may allow air to enter the brake system, possibly causing it to become - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 136
Front brake NOTE: To check the rear brake fluid level, remove panel B. (See page 8-9.) Observe these precautions: G When checking the fluid level, make sure that the top of the brake fluid reservoir is level. G Use only the recommended quality brake fluid, otherwise the rubber seals may deteriorate - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 137
G As the brake pads wear, it is normal for the brake fluid level to gradually go down. However, if the brake fluid level goes down suddenly, have a Yamaha dealer check the cause. EBU24290 Changing the brake fluid Have a Yamaha dealer change the brake fluid at the intervals specified in the NOTE - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 138
adjusted brakes. WHAT CAN HAPPEN You could lose braking ability, which could lead to an accident. HOW TO AVOID THE HAZARD After servicing: G Make sure the brakes operate smoothly and that the free play is correct. G Make sure the brakes do not drag. G Make sure the brakes are - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 139
2. Turn the brake lever free play adjusting bolt in direction (a) to increase the free play, and in direction (b) to decrease it. Checking the brake pedal position The top of the brake pedal should be positioned 72.0 mm (2.83 in) above the top of the footboard. If the brake pedal position is - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 140
adjusted brakes. WHAT CAN HAPPEN You could lose braking ability, which could lead to an accident. HOW TO AVOID THE HAZARD After servicing: G Make sure the brakes operate smoothly and that the free play is correct. G Make sure the brakes do not drag. G Make sure the brakes are - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 141
EBU24751 Brake light switches The operation of the brake light switches must be checked and, if necessary, adjusted at the intervals specified in the periodic maintenance and lubrication chart. The brake light switch for the brake pedal can be adjusted as follows, but the other brake light switches - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 142
EWB02120 Front brake lever WARNING POTENTIAL HAZARD Damaged control cables. WHAT CAN HAPPEN Corrosion can result when the cable sheaths become damaged, and cables can also become frayed or kinked, which could restrict the operation of controls and lead to an accident or injury. HOW TO AVOID THE - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 143
EBU24951 EBU24962 Checking and lubricating the brake pedal The operation of the brake pedal should be checked before each ride, and the pedal pivot should be lubricated if necessary. NOTE: To access the brake pedal pivot, remove panel B. (See page 8-9.) Recommended lubricant: Silicone grease - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 144
EBU25212 Battery This model is equipped with a sealed-type (MF) battery, which does not require any maintenance. There is no need to check the electrolyte or to add distilled water. Check and, if necessary, tighten the battery lead connections. ECB00620 CAUTION: Never attempt to remove the battery - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 145
HOW TO AVOID THE HAZARD Avoid contact with skin, eyes or clothing. Always shield eyes when working near batteries. Keep out of reach of children. Antidote: EXTERNAL: Flush with water. INTERNAL: Drink large quantities of water or milk. Follow with milk of magnesia, beaten egg or vegetable oil. Get - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 146
ECB00630 EBU25313 CAUTION: G Always keep the battery charged. Storing a discharged battery can cause permanent battery damage. G To charge a sealed-type (MF) battery, a special constant-voltage battery charger is required. Using a conventional battery charger will damage the battery. If you do not - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 147
ECB00640 EWB02151 CAUTION: To prevent accidental short-circuiting, turn off the main switch when checking or replacing a fuse. 2. Remove the blown fuse, and then install a new fuse of the specified amperage. Specified fuses: Main fuse: 30.0 A Headlight fuse: 15.0 A Ignition fuse: 10.0 A Four-wheel - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 148
3. Remove the headlight bulb holder by pushing it in and turning it counterclockwise. 1. Cover at the rear of the headlight 2. Remove the headlight bulb holder cover by pulling it off. 8 1. Headlight bulb holder 4. Remove the defective bulb by pulling it out. EWB02180 WARNING POTENTIAL HAZARD A - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 149
5. Insert a new headlight bulb into the bulb holder by pushing it in. 7. Install the bulb holder cover and the cover at the rear of the headlight. ECB00670 CAUTION: Make sure the headlight bulb holder cover is securely fitted over the bulb holder and seated properly. 8. Adjust the headlight beam - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 150
1. Headlight beam adjusting screw EBU25640 1. Tail/brake light bulb holder Replacing the tail/brake light bulb 8 If the tail/brake light bulb burns out, replace it as follows. 1. Remove panel G. (See page 8-9.) 2. Remove the bulb holder (together with the bulb) by turning it counterclockwise. 3. - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 151
G Tapered nuts are used for both the front and rear wheels. Install the nuts with their tapered side towards the wheel. 1. Wheel nut 2. Elevate the ATV and place a suitable stand under the frame. 3. Remove the nuts from the wheel. 4. Remove the wheel. EBU25700 1. Arrow mark 8 Installing a - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 152
trouble may occur during operation. Any problem in the fuel, compression, or ignition systems, for example, can cause poor starting and loss of power. The following troubleshooting parts, but they are often inferior, have a shorter service life and can lead to expensive repair bills. EWB02260 1. - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 153
HOW TO AVOID THE HAZARD Do not smoke when checking the fuel system. Make sure there are no open flames or sparks in the area, including pilot lights from water heaters or furnaces. 8 8-58 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 154
EBU25771 Troubleshooting charts Starting problems or poor engine performance 1. Fuel There is enough fuel. Check the fuel level in the fuel tank. There is no fuel. Supply fuel. Check the - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 155
Engine overheating EWB02270 WARNING POTENTIAL HAZARD Removing the radiator cap when the engine and radiator are still hot. WHAT CAN HAPPEN You could be burned by hot fluid and steam blown out under pressure. HOW TO AVOID THE HAZARD Wait for the engine to cool before removing the radiator cap. - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 156
EBU25860 CLEANING AND STORAGE EBU25870 Cleaning Frequent, thorough cleaning of your ATV will not only enhance its appearance but will improve its general performance and extend the useful life of many components. 1. Before cleaning the ATV: a. Block off the end of the exhaust pipe to prevent water - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 157
and, if necessary, protect it against dust with a porous cover. ECB00720 Long-term Before storing your ATV for several months: 1. Follow all the instructions in the "Cleaning" section of this chapter. 2. Turn the fuel cock lever to "OFF". 3. Drain the carburetor float chamber by loosening the drain - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 158
6. 7. 9 8. 9. b. Pour a teaspoonful of engine oil into the spark plug bore. c. Install the spark plug cap onto the spark plug, and then place the spark plug on the cylinder head so that the electrodes are grounded. (This will limit sparking during the next step.) d. Turn the engine over several - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 159
Displacement: 660.0 cm³ Bore × stroke: 100.0 × 84.0 mm (3.94 × 3.31 in) -20˚ -10˚ 0˚ 10˚ 20˚ 30˚ 40˚ 50˚C 10 Recommended engine oil grade: API service SG type or higher, JASO standard MA Engine oil quantity: Without oil filter cartridge replacement: 1.90 L (2.01 US qt) (1.67 Imp.qt) 10-1 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 160
With oil filter cartridge replacement: 2.00 L (2.11 US qt) (1.76 Imp.qt) Type x quantity: BSR42 x 1 Final gear oil: Type: SAE80 API GL-4 Hypoid gear oil Quantity: 0.25 L (0.26 US qt) (0.22 Imp.qt) Spark plug (s): Manufacturer/model: NGK/DPR8EA-9 Spark plug gap: 0.8-0.9 mm (0.031-0.035 in) - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 161
Caster angle: 5.0 ° Trail: 26.0 mm (1.02 in) Front tire: Type: Tubeless Size: AT25 x 8-12 Manufacturer/model: DUNLOP/KT131 Rear: 27.0 kPa (3.9 psi) (0.270 kgf/cm²) Maximum: Front: 38.0 kPa (5.5 psi) (0.380 kgf/cm²) Rear: 33.0 kPa (4.8 psi) (0.330 kgf/cm²) Front wheel: Wheel type: Panel wheel Rim - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 162
Front suspension: Type: Double wishbone Spring/shock absorber type: Coil spring/oil damper Wheel travel: 170 mm (6.7 in) Rear suspension: Type: Double wishbone Spring/shock absorber type: Coil spring/oil damper Wheel travel: 225 mm (8.9 in) Electrical system: Ignition system: DC. CDI Charging - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 163
Four-wheel-drive motor fuse: 3.0 A 10 10-5 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 164
EBU25981 CONSUMER INFORMATION EBU26011 EBU26020 Identification numbers Record the key identification number, vehicle identification number and model label information in the spaces provided below for assistance when ordering spare parts from a Yamaha dealer or for reference in case the ATV is - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 165
1. Vehicle identification number (front left side) 1. Model label NOTE: The vehicle identification number is used to identify your ATV. EBU26050 Model label The model label is affixed at the location in the illustration. Record the information on this label in the space provided. This information - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 166
EBU26060 Noise regulation TAMPERING WITH NOISE CONTROL SYSTEM PROHIBITED: Federal law prohibits the following acts or the causing thereof: (1) The removal or rendering inoperative by any person other than for purposes of maintenance, repair, or replacement of any device or element of design - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 167
) 15000 (9600) 17500 (11200) 20000 (12800) 22500 (14400) 25000 (16000) hours 20 80 160 320 480 640 800 960 1120 1280 1440 1600 DATE OF SERVICE MILEAGE SERVICING DEALER NAME AND ADDRESS REMARKS 11 11-4 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 168
to: 1. Operate and maintain the ATV as specified in the appropriate owner's manual; 2. Give notice to an authorized Yamaha ATV dealer of any and all An inspection and registration fee will be charged for this service. EMISSION CONTROL SYSTEM WARRANTY Yamaha Motor Corporation, USA also warrants - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 169
specified in the Owner's and Service Manual. We do recommend, however, service, you must take it to any authorized Yamaha ATV dealer within the continental United States. Be sure to bring your warranty registration card or other valid proof of the original date of purchase. If a question or problem - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 170
no extra cost. TRIP gives you up to $150 reimbursement per occurrence for any reasonable expenses you incur because your Yamaha needs covered service: replacement vehicle rental, emergency towing, phone calls, even food and lodging when you are away from home. This superb coverage goes into effect - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 171
isn ' t convenient, contact Yamaha with your Primar y ID number (your frame number). We ' ll be happy to help you get the Y.E.S. coverage you need. Yamaha Service Marketing P.O. Box 6555 Cypress, CA 90630 11 WARNING Indicates a potential hazard that could result in serious injury or death. 11-8 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 172
EBU26132 11 11-9 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 173
INDEX A Accessories and loading ...6-7 Accessories, auxiliary jack ...4-23 Air filter element, cleaning ...8-31 Axle boots ...8-45 D Differential gear lock indicator light ...4-3 Differential gear oil ...5-4, 8-24 Drive select lever ...4-15 Drive select lever and driving in reverse ...6-3 Drive - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 174
switch ...4-7 Owner's manual and tool kit ...8-1 T Tail/brake light bulb, replacing ...8-55 Throttle cable free play, adjusting ...8-38 Throttle lever ...4-12, 5-6 Tire pressure, measuring ...5-8 Tires ...5-7 Tire wear limit ...5-9 Troubleshooting ...8-57 Troubleshooting charts ...8-59 P Panels - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 175
W Warranty, extended ...11-7 Warranty, limited ...11-5 Wheel hub bearings, checking ...8-48 Wheel, installing ...8-56 Wheel, removing ...8-55 - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 176
- 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 177
- 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 178
. with a passenger-passengers affect balance and steering and increase risk of losing control. LOCATE AND READ OWNER'S MANUAL. FOLLOW ALL INSTRUCTIONS AND WARNINGS. (For replacement manual, call 1-800-532-1558) NEVER operate: YAMAHA MOTOR CO., LTD. PRINTED ON RECYCLED PAPER PRINTED IN JAPAN - 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 179
- 2008 Yamaha Motorsports Grizzly 660 Auto. 4x4 | Owners Manual - Page 180
READ THIS MANUAL CAREFULLY!
It contains important safety information.
This ATV should not be ridden by anyone under 16 years of age.
WARNING
OWNER’S MANUAL
23D-28199-10
LIT-11626-21-03
YFM66FGX