2004 Yamaha Motorsports Bruin 350 Auto. 4x4 Owners Manual
2004 Yamaha Motorsports Bruin 350 Auto. 4x4 Manual
2004 Yamaha Motorsports Bruin 350 Auto. 4x4 manual content summary:
- 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 1
READ THIS MANUAL CAREFULLY! It contains important safety information. OWNER'S MANUAL YFM350FAS WARNING This ATV should not be ridden by anyone under 16 years of age. LIT-11626-17-32 5UH-F8199-10 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 2
EBU00776 - 2004 Yamaha Motorsports Bruin 350 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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 4
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! WARNING Failure to follow WARNING instructions could result in severe injury or death to the machine - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 5
of manufacture. Please check your local riding laws and regulations before operating this machine. EBU01067 AFFIX DEALER LABEL HERE YFM350FAS OWNER'S MANUAL ©2003 by Yamaha Motor Corporation, U.S.A. 1st edition, July 2003 All rights reserved. Any reprinting or unauthorized use without the written - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 6
EBU00014 WARNING Indicates a potential hazard that could result in serious injury or death. 4 CONTENTS 1 LOCATION OF THE WARNING AND SPECIFICATION LABELS...1-1 SAFETY INFORMATION...2-1 DESCRIPTION AND MACHINE IDENTIFICATION ...3-1 Identification number records...3-2 Key identification number - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 7
5 PRE-OPERATION CHECKS ...5-1 Front and rear brakes ...5-2 Fuel ...5-4 Engine oil ...5-6 Final gear oil...5-6 Differential gear oil ...5-7 Throttle lever ...5-7 Fittings and fasteners...5-7 Lights...5-7 Switches...5-7 Tires ...5-8 How to measure tire pressure...5-10 Tire wear limit...5-11 OPERATION - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 8
8 PERIODIC MAINTENANCE AND ADJUSTMENT...8-1 Owner's manual and tool kit...8-1 Periodic maintenance/ lubrication ...8-3 Panel removal and beam adjustment...8-44 Tail/brake light bulb replacement ...8-45 Troubleshooting ...8-45 Troubleshooting chart ...8-47 9 CLEANING AND STORAGE ...9-1 A. Cleaning - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 9
10 11 12 13 14 SPECIFICATIONS...10-1 NOISE REGULATION...11-1 MAINTENANCE RECORD ...12-1 ATV LIMITED WARRANTY...13-1 YAMAHA EXTENDED SERVICE (Y.E.S.) ...14-1 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 10
EBU00464 LOCATION OF THE WARNING AND SPECIFICATION LABELS 1-1 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 11
performance and can lead to an accident. Never exceed the maximum front cargo limit of : 40kg (88 lbs) NEVER sit on the carrier. Refer to instructions in the Owner's Manual. 5ND-F4877-00 1-2 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 12
performance and can lead to an accident. Never exceed the maximum rear cargo limit of : 80kg (176 lbs) NEVER sit on the carrier. Refer to instructions in the Owner's Manual. 5ND-F4897-00 1-3 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 13
6 7 8 MAXIMUM .LOADING LIMIT PULLING LOAD: TONGUE WEIGHT: 4900 1102 147 33 (500kgf) N lbf ( 15kgf) N lbf 5ND-F151K-00 1-4 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 14
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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 15
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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 16
sharply to one side. Go straight down the hill where possible. Always follow proper procedures for crossing the side of a hill as described in this manual. Avoid hills with excessively slippery or loose surfaces. Shift your weight to the uphill side of the ATV. Never attempt to turn the ATV around - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 17
. 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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 18
WARNING 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 immediately after the engine has been running and is still very hot. Do not spill gasoline on the - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 19
WARNING POTENTIAL HAZARD Starting or running the engine in a closed area. 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. 2-6 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 20
Right handlebar switch Throttle lever Front brake lever NOTE: The machine you have purchased may differ slightly from those shown in the figures of this manual. 3-1 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 21
EBU00600 EBU00035 Identification number records Record the key identification number, vehicle identification number and model label information in the spaces provided for assistance when ordering spare parts from a Yamaha dealer or for reference in case the vehicle is stolen. 1. KEY IDENTIFICATION - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 22
EBU00036 EBU00787 Vehicle identification number The vehicle identification number is stamped into the frame. Model label The model label is affixed to the location in the illustration. Record the information on this label in the space provided. This information will be needed to order spare parts - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 23
EBU00039 1- CONTROL FUNCTIONS 1 2 3 4 WARNING Indicates a potential hazard that could result in serious injury or death. EBU09420 5 6 1. Main switch Main switch Functions of the respective switch positions are as follows: ON: The engine can be started only at this position and the headlights and - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 24
EBU08020 EBU09720 Indicator and warning lights Neutral indicator light "N" This indicator light comes on when the drive select lever is in the "N" position. EBU12500 Reverse indicator light "R" This indicator light comes on when the drive select lever is in the "R" position. 1. 2. 3. 4. - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 25
EBU00605 EBU11400 Four-wheel-drive indicator light " " This indicator light comes on when the 2WD/ 4WD switch is in the 4WD position. NOTE: Due to the synchronizing mechanism in the differential gear case, the light may not come on until the ATV starts moving. Oil temperature warning light " " - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 26
EBU00733 Oil temperature warning light checking method ACB-10E Turn the main switch to "ON" and the engine stop switch to " ". Oil temperature warning light does not come on. Push start switch with the transmission in neutral. Oil temperature warning light comes on. Check engine oil temperature. - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 27
EBU00053 Handlebar switches _ CAUTION: Do not use the headlights with the engine turned off for more than thirty minutes. The battery may discharge to the point that the starter motor will not operate properly. If this should happen, remove the battery and recharge it. _ EBU12050 1. Light switch - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 28
EBU00607 Start switch " " The starter motor cranks the engine when this switch is pushed. CAUTION: See starting instructions prior to starting the engine. (See page 6-1 for details.) 1. Four-wheel drive switch "2WD/4WD" EBU00601 On-Command four-wheel drive switch "2WD/4WD" To - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 29
WARNING POTENTIAL HAZARD Changing from 2WD to 4WD or from 4WD to 2WD while the ATV is moving. WHAT CAN HAPPEN The ATV handles differently in 2WD than in 4WD in some circumstances. Changing from 2WD to 4WD or from 4WD to 2WD while moving may cause the ATV to unexpectedly handle differently. This - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 30
HAZARD Check the operation of the throttle lever 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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 31
EBU01159 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 available and decreases the maximum speed of the ATV. WARNING POTENTIAL HAZARD Improper adjustment - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 32
EBU00070 Front brake lever The front brake lever is located on the right handlebar. Pull it toward the handlebar to apply the front brake. 1. Brake pedal 1. Front brake lever EBU00732 Brake pedal and rear brake lever The brake pedal is located on the right side of the ATV and the rear brake - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 33
EBU00074 Parking brake Use the parking brake when you have to start the engine or park the machine, especially on a slope. Apply the rear brake lever and push down the lock plate to apply the parking brake. Squeeze the rear brake lever to release the parking brake. WARNING POTENTIAL HAZARD - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 34
EBU01106 EBU01107 Drive select lever The drive select lever is used to shift your machine into the forward, neutral and reverse positions. (Refer to page 6-4 for the drive select lever operation.) Recoil starter Firmly grasp the handle and pull slightly until engagement can be felt. Then pull - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 35
EBU00092 WARNING POTENTIAL HAZARD Starting the engine without shifting into the neutral position. WHAT CAN HAPPEN The ATV could start to move unexpectedly, which could cause an accident. HOW TO AVOID THE HAZARD Shift the drive select lever into the neutral position and apply the parking brake - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 36
EBU00093 Fuel cock The fuel cock supplies fuel from the fuel tank to the carburetor. The fuel cock has three positions. OFF: With the lever in this position fuel will not flow. Always turn the lever to this position when the engine is not running. ON: With the lever in this position, fuel flows to - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 37
EBU00095 RES Position 1. Arrow mark pointing to "RES" Starter (choke) " " Starting a cold engine requires a richer air-fuel mixture. A separate starter circuit supplies this mixture. Move in direction a to turn on the starter (choke). Move in direction b to turn off the starter (choke). Refer to - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 38
EBU05670 Seat To remove the seat, pull the seat lock lever upward and pull up the seat at the rear. To install the seat, insert the projections on the front of the seat into the seat holders and push down on the seat at the rear. NOTE: Make sure that the seat is securely fitted. _ _ 1. Seat 2. - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 39
EBU14580 Storage box Maximum load limit: 2 kg (4.4 lb) CAUTION: _ NOTE: There is a check hose at the bottom of the storage box. If any water collects in this hose, remove the hose, empty it, and then install it. _ _ To protect from damage, do not put metal products, like tools or sharply edged - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 40
EBU00582 Front carrier Maximum load limit: 40 kg (88 lb) EBU00583 Rear carrier Maximum load limit: 80 kg (176 lb) 1. Spring preload adjusting ring 2. Position indicator EBU01104 Front shock absorber adjustment The spring preload can be adjusted to suit the rider's weight and riding conditions. - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 41
EBU01103 Rear shock absorber adjustment The spring preload can be adjusted to suit the rider's weight and riding conditions. Adjust the spring preload as follows: To increase the spring preload, turn the adjusting ring in direction a. To decrease the spring preload, turn the adjusting ring in - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 42
NOTE: A special wrench can be obtained at a Yamaha dealer to make this adjustment. _ _ Standard position: 2 1 - Minimum (soft) 5 - Maximum (hard) 1. Special wrench EBU00112 WARNING 4-20 Indicates a potential hazard that could result in serious injury or death. - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 43
1- PRE-OPERATION CHECKS 1 2 Before using this machine, check the following points: ITEM Front brake Rear brake Fuel Engine oil Final gear oil/ differential gear oil Throttle Wheels and tires Fittings and fasteners Lights and switches Axle boots ROUTINE • Check operation, free play, fluid level and - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 44
use it to make sure the ATV is in safe operating condition. Always follow the inspection and maintenance procedures and schedules described in the Owner's Manual. Front and rear brakes Brake levers and brake pedal G Check for correct free play in the front brake lever. If the free play is incorrect - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 45
accident. HOW TO AVOID THE HAZARD Always check 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. 5-3 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 46
EBU01085 Fuel Make sure there is sufficient gasoline in the tank. Recommended fuel: UNLEADED GASOLINE ONLY Fuel tank capacity: Total: 13.5 L (2.97 Imp gal, 3.57 US gal) Reserve: 3.3 L (0.73 Imp gal, 0.87 US gal) Your Yamaha engine has been designed to use regular unleaded gasoline with a pump - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 47
does not exceed 10%. Gasohol containing methanol is not recommended by Yamaha because it may cause fuel system damage or vehicle performance problems. WARNING POTENTIAL HAZARD Improper care when refueling. WHAT CAN HAPPEN Fuel can spill, which can cause a fire and severe injury. Fuel expands - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 48
EBU10842 EBU00493 Engine oil Make sure the engine oil is at the specified level. Add oil as necessary. (See pages 8-6- 8-11.) Final gear oil Make sure the final gear oil is at the specified level. Add oil as necessary. (See pages 8-11- 8-13 for details.) Recommended oil: SAE 80 API GL-4 Hypoid - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 49
Always check the tightness of chassis fittings and fasteners before a ride. Take the machine to a Yamaha dealer or refer to the Service Manual for correct tightening torque. EBU10030 EBU01083 Throttle lever Check to see that the throttle lever operates correctly. It must open smoothly and spring - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 50
EBU00157 Tires 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 accident. - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 51
4. Use no more than the following pressures when seating the tire beads. Front 250 kPa (2.5 kgf/cm2, 36 psi) Rear 250 kPa (2.5 kgf/cm2, 36 psi) Higher pressures may cause the tire to burst. Inflate the tires very slowly and carefully. Fast inflation could cause the tire to burst. 5-9 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 52
EBU00159 How to measure tire pressure Use the low-pressure tire gauge. NOTE: The low-pressure tire gauge is included as standard equipment. Make two measurements of the tire pressure and use the second reading. Dust or dirt in the gauge could cause the first reading to be incorrect. Set pressure - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 53
EBU00160 Tire wear limit When the tire groove decreases to 3 mm (0.12 in) due to wear, replace the tire. a. Tire wear limit 5-11 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 54
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. 6-1 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 55
NOTE: G When the drive select lever is in the neutral position, the neutral indicator light should come on. If it does not come on, ask a Yamaha dealer to inspect the electric circuit. G The engine can be started in any gear if the brake pedal is applied. However, it is recommended to shift into - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 56
NOTE: G If the engine fails to start, release the start switch, then push the start switch again. Pause a few seconds before the next attempt. Each cranking should be as short as possible to preserve battery energy. Do not crank the engine more than 10 seconds on each attempt. G If the battery is - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 57
throttle lever to the closed position. 2. Shift the gear from neutral to forward and vice versa by moving the drive select lever along the shift guide. NOTE: Make sure that the drive select lever is completely shifted into position. _ _ 1. Drive select lever 3. Open the throttle lever gradually - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 58
closed position. 2. Apply the brake pedal. 3. Shift the gear from neutral to reverse and vice versa by moving the drive select lever along the shift guide. NOTE: When in reverse, the reverse indicator light should be on. If the light does not come on, ask a Yamaha dealer to inspect the ATV - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 59
WARNING POTENTIAL HAZARD Improper operation in reverse. WHAT CAN HAPPEN You could hit an obstacle or person behind you, resulting in serious injury. HOW TO AVOID THE HAZARD When you shift into reverse, make sure there are no obstacles or people behind you. When it is safe to proceed, go slowly. 6-6 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 60
EBU02101 Engine break-in There is never a more important period in the life of your machine than the period between zero and 20 hours. For this reason, we ask that you carefully read the following material. Because the engine is brand new, you must not put an excessive load on it for the first - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 61
EBU00211 10-20 hours: Avoid prolonged operation above 3/4 throttle. Rev the machine freely but do not use full throttle at any time. After break-in: Avoid prolonged full throttle operation. Vary speeds occasionally. Parking When parking, stop the engine and shift into neutral. Turn the fuel cock - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 62
EBU13750 Parking on a slope WARNING POTENTIAL HAZARD Parking on a hill or other incline. WHAT CAN HAPPEN The ATV could roll out of control, increasing the chance of an accident. HOW TO AVOID THE HAZARD Avoid parking on hills or other inclines. If you must park on an incline, place the machine - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 63
EBU00221 Accessories and loading EBU00222 G 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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 64
EBU12461 Loading Cargo or a trailer can change the stability and handling of an ATV. You must use common sense and good judgment when carrying cargo or towing a trailer. Keep the following points in mind: G Never exceed the weight limits shown. An overloaded ATV can be unstable. MAXIMUM LOADING - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 65
G G G G Ride more slowly than you would without a load. The more weight you carry, the slower you should go. Allow more braking distance. A heavier vehicle takes longer to stop. Avoid making sharp turns unless at very slow speeds. Avoid hills and rough terrain. Choose terrain carefully. Added - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 66
EBU14610 WARNING _ Indicates a potential hazard that could result in serious injury or death. 6-13 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 67
1- Riding Your ATV 7 7-1 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 68
7-2 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 69
use. This section, Riding your ATV, provides general ATV riding instructions for recreational riding. The skills and techniques described in this section, begin to ride, be sure you have read this 7-3 Owner's Manual completely and understand the operation of the controls. Pay particular attention to - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 70
the course and the operating techniques described in this Owner's Manual. For more information about the training course, contact an authorized more difficult maneuvers. WARNING POTENTIAL HAZARD Operating this ATV without proper instruction. WHAT CAN HAPPEN The risk of an accident is greatly - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 71
Not recommended for children under 16 years of age. WARNING POTENTIAL HAZARD Failure to follow the age recommendations for this ATV. 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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 72
This ATV is designed to carry operator and cargo only - passengers prohibited. WARNING POTENTIAL HAZARD Carrying a passenger on this ATV. WHAT CAN HAPPEN Greatly reduces your ability to balance and control this ATV. Could cause an accident, resulting in harm to you and/ or your passenger. HOW TO - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 73
Apparel 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. Operating - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 74
Do not operate after consuming alcohol or drugs. Operator's performance capability is reduced by the influence of alcohol or drugs. WARNING POTENTIAL HAZARD Operating this ATV after consuming alcohol or drugs. WHAT CAN HAPPEN Could seriously affect your judgment. Could cause you to react more - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 75
. HOW TO AVOID THE HAZARD Always use the size and type tires specified in the Owner's Manual for this vehicle on pages 5-8-5-9. Always maintain proper tire pressure as described in the Owner's Manual on page 5-10. WARNING POTENTIAL HAZARD Failure to inspect the ATV before operating. Failure to - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 76
WARNING _ Indicates a potential hazard that could result in serious injury or death. Do not operate at speeds too fast for your skills or the conditions. WARNING POTENTIAL HAZARD Operating this ATV at speeds too fast for your skills or the conditions. WHAT CAN HAPPEN Increases your chances of - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 77
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. 7-11 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 78
During operation Always keep your feet on the footboards during operation. Otherwise your feet may contact the rear wheels. WARNING POTENTIAL HAZARD Removing hands from handlebars or feet from footboards during operation. WHAT CAN HAPPEN Removing even one hand or foot can reduce your ability to - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 79
Avoid wheelies and jumping. You may lose control of the ATV or overturn. WARNING POTENTIAL HAZARD Attempting wheelies, jumps, and other stunts. WHAT CAN HAPPEN Increases the chance of an accident, including an overturn. HOW TO AVOID THE HAZARD Never attempt stunts, such as wheelies or jumps. Don't - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 80
added to this vehicle 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. 7-14 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 81
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. Do not touch the hot exhaust system. Do not park the ATV in a place where - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 82
BE CAREFUL WHERE YOU RIDE This ATV is designed for off-road use only. Riding on paved surfaces can cause loss of control. WARNING POTENTIAL HAZARD Operating this ATV on paved surfaces. WHAT CAN HAPPEN ATVs are designed for off-road use only. Paved surfaces may seriously affect handling and control - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 83
Do not ride on any public road, street, or highway. Riding on public roads can result in collisions with other vehicles. 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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 84
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. WARNING POTENTIAL HAZARD Failure to use extra care when operating this ATV on unfamiliar terrain. WHAT CAN HAPPEN - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 85
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 vehicle control, which could result in an accident, including an overturn. HOW TO AVOID THE HAZARD Do not operate on excessively rough, - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 86
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. WHAT CAN HAPPEN You could be in a collision. You could be injured. HOW TO AVOID THE HAZARD Always mount a caution flag on the ATV - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 87
ATV is designed for off-road use only, and handling maneuvers are more difficult to perform on pavement. Set the parking brake 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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 88
that this skill be learned first at low speed. 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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 89
Once you have learned this technique you should be able to perform it at higher speeds or in tighter curves. Improper riding procedures such as abrupt throttle changes, excessive braking, incorrect body movements, or too much speed for the sharpness of the turn may cause the ATV to tip. If the ATV - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 90
CLIMBING UPHILL Use proper riding techniques to avoid vehicle overturns on hills. Be sure that you can maneuver your ATV well on flat ground before attempting any incline and then practice riding first on gentle slopes. Try more difficult climbs only after you have developed your skill. In all cases - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 91
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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 92
AVOID THE HAZARD Never attempt to turn the ATV around on any 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 crossing the side of a steep hill if possible. 7-26 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 93
When crossing the side 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 the uphill side of the ATV. 7-27 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 94
If your ATV has stalled or stopped and you believe you can continue up the hill, restart carefully to make sure you do not lift the front wheels which could cause you to lose control. If you are unable to continue up the hill, dismount the ATV on the uphill side. Physically turn the ATV around and - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 95
brake. Dismount on 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. 7-29 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 96
RIDING DOWNHILL When riding your ATV downhill, shift your weight as far to the rear and uphill side of the ATV as possible. Move back on the seat and sit with your arms straight. Engine compression will do most of the braking for you. For maximum engine compression braking effect, change to 4WD - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 97
HAPPEN Could cause loss of control or cause the ATV to overturn. 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. HOW TO AVOID THE HAZARD Always check the terrain carefully before you - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 98
AVOID THE HAZARD Never attempt to turn the ATV around on any 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 crossing the side of a steep hill if possible. When crossing the side of - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 99
7-33 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 100
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. 7-34 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 101
Test your brakes after leaving the water. Do not continue to ride your ATV without verifying that you have regained proper braking ability. 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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 102
1. V-belt cooling duct check hose (left front side of ATV) 1. Storage box check hose 1. Drive select lever box check hose 1. V-belt case drain plug 7-36 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 103
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. 7-37 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 104
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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 105
With practice, over a period of time, skill at controlled sliding can be developed. The terrain should be chosen carefully before attempting such maneuvers, since both stability and control are reduced. Bear in mind that sliding maneuvers should always be avoided on extremely slippery surfaces such - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 106
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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 107
G G 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 starts to tip, steer down the hill (if there are no obstacles in your way) to regain balance. If you discover that the ATV is going - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 108
on the bottom of the seat as shown. Put the owner's tool kit and low-pressure tire gauge under the seat. The service information included in this manual is intended to provide you, the owner, with the necessary information for completing your own preventive maintenance and minor repairs. The tools - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 109
to instructions. If you have questions, consult an authorized Yamaha ATV dealer. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1. Owner's manual 2. Owner's tool kit 3. Low-pressure tire gauge NOTE: If you do not have a torque wrench available during a service operation requiring one, - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 110
EBU00261 PERIODIC MAINTENANCE/LUBRICATION ITEM Valves* Spark plug Air filter element Carburetor* Crankcase breather system* Exhaust system* Spark arrester Fuel line* Engine oil Engine oil filter cartridge Engine oil strainer* Final gear oil Differential gear oil Front brake* Rear brake ROUTINE - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 111
EVERY 3 6 6 1 months months months year * Since these items require special tools, data and technical skills, have a Yamaha dealer perform the service. NOTE: G Recommended brake fluid: DOT 4 G Brake fluid replacement: • When disassembling the master cylinder or caliper, replace the brake fluid - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 112
EBU08070 EBU01147 Panel removal and installation The panel illustrated needs to be removed to perform some of the maintenance described in this chapter. Refer to this section each time the panel has to be removed or installed. Panel A To remove Remove the bolt, and then take the panel off. To - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 113
EBU14540 Engine oil and oil filter cartridge The engine oil level should be checked before each ride. In addition, the oil must be changed and the oil filter cartridge replaced at the intervals specified in the periodic maintenance and lubrication chart. To check the engine oil level 1. Place the - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 114
5. Insert the dipstick in the oil filler hole (without screwing it in), and then remove it again to check the oil level. NOTE: The engine oil should be between the minimum and maximum level marks. _ _ 7. Insert the dipstick into the oil filler hole, and then tighten the oil filler cap. 1. Maximum - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 115
To change the engine oil (with or without oil filter cartridge replacement) 1. Start the engine, warm it up for several minutes, and then turn it off. 2. Place an oil pan under the engine to collect the used oil, and then remove the engine oil filler cap. 3. Remove the engine oil drain bolt to drain - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 116
1. Oil filter wrench 1. O-ring NOTE: An oil filter wrench is available at a nearby Yamaha dealer. _ _ 5. Apply a light coat of engine oil to the O-ring of the new oil filter cartridge. NOTE: Make sure the O-ring is seated properly. _ _ 8-9 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 117
6. Install the new oil filter cartridge with an oil filter wrench, and then tighten it to the specified torque with a torque wrench. 7. Install the engine oil drain bolt, and then tighten it to the specified torque. Tightening torque: Engine oil drain bolt: 23 Nm (2.3 m·kgf, 16 ft·lbf) 8. Add the - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 118
EBU11452 CAUTION: _ G G _ In order to prevent clutch slippage (since the engine oil also lubricates the clutch), do not mix any chemical additives. Do not use oils with a diesel specification of "CD" or oils of a higher quality than specified. In addition, do not use oils labeled "ENERGY - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 119
3. If the oil is below the brim of the filler hole, add sufficient oil of the recommended type to raise it to the correct level. Final gear oil replacement 1. Remove the final gear case cover by removing the bolts. CAUTION: _ Be sure no foreign material enters the final gear case. _ 4. Install - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 120
4. Remove the oil filler bolt and the drain bolt to drain the oil. Recommended oil: SAE 80 API GL-4 Hypoid gear oil Oil quantity: 0.23 L (0.20 Imp qt, 0.24 US qt) CAUTION: _ Be sure no foreign material enters the final gear case. _ 1. Final gear oil drain bolt 5. Install the drain bolt, and - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 121
EBU01241 Differential gear oil replacement 1. Place the machine on a level surface. 2. Place a container under the differential gear case to catch the oil. 3. Remove the oil filler bolt and oil drain bolt to drain the oil. 1. Differential gear oil drain bolt 4. Install the oil drain bolt, and - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 122
5. Fill the differential gear case with the specified amount of the recommended oil. NOTE: G Do not exceed the specified differential gear oil quantity when filling. Overfilling will cause the oil to seep out of the breather hose during and after riding. G The differential gear oil level cannot be - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 123
EBU00862 EBU14550 Axle boots Check the protective boots for holes or tears. If any damage is found, have them replaced by a Yamaha dealer. Spark plug inspection Removal 1. Remove the spark plug cap. 1. Spark plug cap 1. Axle boot (× 2 each side) 8-16 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 124
the center electrode is a medium-to-light tan color for an ATV that is being ridden normally. Do not attempt to diagnose such problems yourself. Installation 1. Measure the electrode gap with a wire thickness gauge and, if necessary, adjust the gap to specification. Spark plug gap: 0.6-0.7 mm (0.02 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 125
NOTE: If a torque wrench is not available when you are installing a spark plug, a good estimate of the correct torque is 1/4 to 1/2 turn past finger tight. Have the spark plug tightened to the specified torque as soon as possible. _ _ 4. Install the spark plug cap. a. Spark plug gap 2. Clean the - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 126
EBU11332 Air filter element cleaning NOTE: There is a check hose at the bottom of the air filter case. If dust or water collects in this hose, empty the hose and clean the air filter element and air filter case. _ _ 1. Holder (× 4) 2. Air filter case cover 3. Remove the air filter element - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 127
WARNING POTENTIAL HAZARD Using low flash point solvents or gasoline to clean the air filter element. WHAT CAN HAPPEN Low flash point solvents or gasoline can catch fire or explode. HOW TO AVOID THE HAZARD Use parts cleaning solvent to clean the air filter element. 5. Squeeze the excess solvent out - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 128
7. Apply Yamaha foam air filter oil or other quality foam air filter oil to the air filter element. If foam air filter oil is not available, engine oil may be used. NOTE: The air filter element should be wet but not dripping. _ _ 8. Pull the air filter element over its frame. 9. Install the air - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 129
EBU06411 EBU08741 V-belt cooling duct check hose If dust or water collects in the V-belt cooling duct check hose, remove the hose and clean it. V-belt case drain plug After riding in water deep enough to allow it to enter the V-belt case, remove this plug to drain the water from the case. NOTE: - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 130
EBU01066 Spark arrester cleaning Be sure the exhaust pipe and muffler are cool before cleaning the spark arrester. 1. Remove the bolts. 2. Remove the tailpipe by pulling it out of the muffler. 1. Spark arrester 4. Insert the tailpipe into the muffler and align the bolt holes. 5. Install and - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 131
EBU00296 WARNING POTENTIAL HAZARD Improper cleaning of the spark arrester. Hot exhaust system 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: - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 132
fuel/air supply or engine noise. To prevent this, the valve clearance must be adjusted regularly. This adjustment however, should be left to a professional Yamaha service technician. 8-25 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 133
EBU00307 Throttle lever adjustment NOTE: Adjust the engine idling speed before adjusting the throttle lever free play. 1. Loosen the locknut. 2. Turn the adjusting bolt until the throttle lever free play is 3-5 mm (0.12-0.20 in). 3. Tighten the locknut. a. Throttle lever free play 1. Locknut 2. - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 134
EBU13090 EBU00313 Front brake pad check Check the brake pads for damage and wear. If a brake pad thickness is less than 1 mm (0.04 in), have a Yamaha dealer replace the pads as a set. Rear brake shoe inspection A wear indicator is provided on the rear brake. This indicator allows checking of - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 135
EBU13040 Brake fluid level check Insufficient brake fluid may let air enter the brake system, possibly causing the brakes to become ineffective. Before riding, check that the brake fluid is above the minimum level mark and replenish if necessary. A low brake fluid level may indicate worn brake pads - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 136
the cause if the brake fluid level goes down. Brake fluid replacement Complete fluid replacement should be done only by trained Yamaha service personnel. Have a Yamaha dealer replace the following components during periodic maintenance or when they are damaged or leaking. G Replace the oil seals - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 137
check the brake system. WARNING POTENTIAL HAZARD Operating with improperly serviced or 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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 138
EBU01239 Rear brake pedal and lever adjustment Brake pedal free play adjustment 1. Fully loosen the adjusting nut on the brake lever cable at the rear wheel. 2. Turn the adjusting nut on the brake pedal cable until the free play is 20-30 mm (0.79-1.18 in). a. Brake pedal free play 1. Adjusting - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 139
Brake lever free play adjustment 1. Loosen the locknut and fully turn in the adjusting bolt at the brake lever. 2. Turn in the adjusting nut on brake cable to provide a gap of 0-1 mm (0-0.04 in) between the brake camshaft lever and the pin. 1. Locknut 2. Adjusting bolt 1. Adjusting nut (brake - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 140
or 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. Replacement of brake components requires - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 141
EBU12590 Adjusting the rear brake light switch The rear brake light switch, which is activated by the brake pedal and rear brake lever, is properly adjusted when the brake light comes on just before braking takes effect. If necessary, adjust the brake light switch as follows. 1. Remove panel A. ( - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 142
EBU00356 EBU12600 Cable inspection and lubrication WARNING POTENTIAL HAZARD Damaged control cables. WHAT CAN HAPPEN Corrosion can result when the outer covering of control cables becomes damaged. Cables can also become frayed or kinked. Operation of controls could be restricted, which could cause - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 143
EBU01112 Wheel removal 1. Loosen the wheel nuts. 2. Elevate the ATV and place a suitable stand under the frame. 3. Remove the nuts from the wheel. 4. Remove the wheel. 1. Nut (× 4) 8-36 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 144
EBU01121 Wheel installation 1. Install the wheel and the nuts. NOTE: G Tapered nuts are used for both the front and rear wheels. Install the nut with its tapered side towards the wheel. G The arrow mark on the tire must point toward the rotating direction of the wheel. _ _ 2. Lower the ATV so that - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 145
EBU00380 Battery This machine is equipped with a sealed-type battery. Therefore it is not necessary to check the electrolyte or add distilled water in the battery. If the battery seems to have discharged, consult a Yamaha dealer. CAUTION: Do not try to remove the sealing caps of the battery cells. - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 146
EBU00385 EBU08760* Battery maintenance 1. When the machine is not used for a month or longer, remove the battery and store it in a cool, dark place. Completely recharge the battery before reinstallation. CAUTION: A special battery charger (constant voltage/ampere or constant voltage) is required - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 147
1. Main fuse 3. Fuse box 2. Spare main fuse 1. 2. 3. 4. 5. Headlight fuse Ignition fuse Four-wheel drive fuse Signaling system fuse Spare fuse (× 3) Specified fuses: Main fuse: Headlight fuse: Ignition fuse: Four-wheel drive fuse: Signaling system fuse: 30 A 15 A 15 A 3A 10 A 8-40 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 148
EBU14560 WARNING POTENTIAL HAZARD Using an improper fuse. WHAT CAN HAPPEN An improper fuse can cause damage to the electrical system which could lead to a fire. HOW TO AVOID THE HAZARD Always use a fuse of the specified rating. Never use a material in place of the proper fuse. Replacing a - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 149
2. Remove the headlight bulb holder by turning it counterclockwise. 1. Headlight bulb holder tab (× 2) 1. Headlight bulb holder 3. Remove the defective bulb by unhooking the headlight bulb holder tabs. 8-42 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 150
WARNING POTENTIAL HAZARD A headlight bulb is hot when it is on and immediately after it is turned off. WHAT CAN HAPPEN You can be burned, or a fire could start if the bulb touches something flammable. HOW TO AVOID THE HAZARD Wait for the bulb to cool before touching or removing it. 4. Insert a new - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 151
EBU01089 5. Install the headlight bulb holder by turning it clockwise. 6. Install the headlight bulb holder cover at the rear of the headlight. Headlight beam adjustment CAUTION: _ It is advisable to have a Yamaha dealer make this adjustment. _ To raise the beam, turn the adjusting screw in - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 152
the tail/brake light bulb burns out, have a Yamaha dealer replace it. Troubleshooting Although Yamaha machines receive a rigid inspection before shipment from the factory, trouble may occur during operation. Any problem in the fuel, compression, or ignition systems can cause poor starting and loss - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 153
WARNING POTENTIAL HAZARD Checking the fuel system while smoking or near an open flame. WHAT CAN HAPPEN Fuel can ignite or explode, causing severe injury or property damage. 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, - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 154
EBU04400 Troubleshooting chart Turn the fuel cock lever to "ON". There is fuel. 1. Fuel Check if there is fuel in the fuel tank. Some fuel. Turn the - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 155
EBU00419 1- CLEANING AND STORAGE CAUTION: Excessive water pressure may cause water seepage and deterioration of wheel bearings, brakes, transmission seals and electrical devices. Many expensive repair bills have resulted from improper high pressure detergent applications such as those available in - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 156
6. Clean the seat with a vinyl upholstery cleaner to keep the cover pliable and glossy. 7. Automotive type wax may be applied to all painted and chrome plated surfaces. Avoid combination cleaner-waxes. Many contain abrasives which may mar the paint or protective finish. When finished, start the - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 157
EBU00530 B. STORAGE Long term storage (60 days or more) of your machine will require some preventive procedures to guard against deterioration. After thoroughly cleaning the machine, prepare for storage as follows: 1. Fill the fuel tank with fresh fuel and add the specified amount of Yamaha Fuel - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 158
7. Remove the battery and charge it. Store it in a dry place and recharge it once a month. Do not store the battery in an excessively warm or cold place (less than 0 °C (30 °F) or more than 30 °C (90 °F)). NOTE: Make any necessary repairs before storing the machine. 9-4 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 159
EBU00428 1- SPECIFICATIONS 1 2 YFM350FA 3 1,984 mm (78.1 in) 1,085 mm (42.7 in) 1,120 mm (44.1 in) 827 mm (32.6 in) 1,233 mm (48.5 in) 245 mm (9.65 in) 3,000 mm (118.1 in) 258 kg (569 lb) Air cooled 4-stroke, SOHC Forward-inclined single cylinder 348.9 cm3 83.0 × 64.5 mm (3.27 × 2.54 in) 9.20 :1 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 160
YAMALUBE 4 (20W40) or SAE 20W40 YAMALUBE 4 (10W30) or SAE 10W30 SAE 5W30 -20˚ -10˚ 0˚ 10˚ 20˚ 30˚ 40˚ 50˚C Recommended engine oil classification: API Service SE, SF, SG type or higher CAUTION: In order to prevent clutch slippage (since the engine oil also lubricates the clutch), do not mix - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 161
Model Final gear case oil: Type Quantity: Periodic oil change Differential gear case oil: Type Quantity: Periodic oil change Air filter: Fuel: Type Fuel tank capacity Fuel reserve amount Carburetor: Type/quantity Manufacturer Spark plug: Type/manufacturer Spark plug gap Clutch type: YFM350FA SAE80 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 162
Model Transmission: Primary reduction system Secondary reduction system Secondary reduction ratio Transmission type Operation Forward gear Reverse gear Chassis: Frame type Caster angle Trail Tire: Type Size Brake: Front brake Rear brake YFM350FA V-belt Shaft drive 41/21 × 24/18 × 33/9 (9.545) V- - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 163
Model Suspension: Front suspension Rear suspension Shock absorber: Front shock absorber Rear shock absorber Wheel travel: Front wheel travel Rear wheel travel Electrical: Ignition system Generator system Battery type Battery capacity Headlight type: YFM350FA Double wishbone Swingarm (monocross) - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 164
Model Bulb voltage, wattage × quantity: Headlight Tail/brake light Neutral indicator light Reverse indicator light Oil temperature warning light Four-wheel drive indicator light Fuses: Main fuse Headlight fuse Ignition fuse Four-wheel drive fuse Signaling system fuse 12 V, 30/30 W × 2 12 V, 5/21 W × - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 165
EBU00430 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 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 166
MAINTENANCE INTERVAL 1 Month 3 Months 6 Months 12 Months 18 Months 24 Months 30 Months 36 Months 42 Months 48 Months 54 Months 60 Months DATE OF SERVICE SERVICING DEALER NAME AND ADDRESS REMARKS 12-1 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 167
EBU00432 YAMAHA MOTOR CORPORATION, U.S.A. ATV LIMITED WARRANTY 13-1 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 168
1 2 3 4 5 6 7 8 9 10 11 12 13 14 13-2 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 169
EBU00435 YAMAHA EXTENDED SERVICE (Y.E.S.) 14-1 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 170
1 2 3 4 5 6 7 8 9 10 11 12 13 EBU00436 14 WARNING _ Indicates a potential hazard that could result in serious injury or death. 14-2 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 171
EBU00437 - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 172
control. 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 USA - 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 173
- 2004 Yamaha Motorsports Bruin 350 Auto. 4x4 | Owners Manual - Page 174
5UH-F8199-10
LIT-11626-17-32
READ THIS MANUAL CAREFULLY!
It contains important safety information.
This ATV should not be ridden by anyone under 16 years of age.
WARNING
YFM350FAS
OWNER’S MANUAL