2012 Yamaha Motorsports RS Venture Owners Manual - Page 75

2012 Yamaha Motorsports RS Venture Manual

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Periodic maintenance and adjustment Spark plug gap: 0.7-0.8 mm (0.028-0.031 in) When installing the spark plug, always clean the gasket surface. Wipe off any grime from the threads and tighten the spark plug to the specified torque. Spark plug tightening torque: 13 Nm (1.3 m·kgf, 9.4 ft·lbf) ECS00382 Standard engine idling speed: 1300-1500 r/min 5. Close the shroud. ESU14071 Adjusting the throttle lever free play RS90P / RS90PLT 1. 2. Place the snowmobile on a level surface and apply the parking brake. Remove the shroud, the left and right side covers, and the top cover. (See page 63 for removal procedures.) Remove the headlight unit bolt on each side of the snowmobile. NOTICE Make sure that the spark plug caps are securely installed. Otherwise the spark plug caps could be damaged due to engine vibration. ESU11795 3. Adjusting the engine idling speed (RST90) 1. 2. Place the snowmobile on a level surface and apply the parking brake. Start the engine and warm it up. 1 TIP Refer to the "Starting the engine" section on page 48. 3. 4. Open the shroud. Turn the throttle stop screw in or out to adjust the engine idling speed. 1. Headlight unit bolt 4. Unhook the headlight unit as shown, then lift it up and move it forward, away from the handlebar. NOTICE: Be careful not to scratch the snowmobile when moving the headlight unit. [ECS00920] 1 1. Throttle stop screw 1. Headlight unit 69

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Periodic maintenance and adjustment
69
When installing the spark plug, always clean
the gasket surface. Wipe off any grime from
the threads and tighten the spark plug to the
specified torque.
NOTICE
ECS00382
Make sure that the spark plug caps are se-
curely installed. Otherwise the spark plug
caps could be damaged due to engine vi-
bration.
ESU11795
Adjusting the engine idling
speed (RST90)
1.
Place the snowmobile on a level surface
and apply the parking brake.
2.
Start the engine and warm it up.
TIP
Refer to the “Starting the engine” section on
page 48.
3.
Open the shroud.
4.
Turn the throttle stop screw in or out to
adjust the engine idling speed.
5.
Close the shroud.
ESU14071
Adjusting the throttle lever free
play
RS90P / RS90PLT
1.
Place the snowmobile on a level surface
and apply the parking brake.
2.
Remove the shroud, the left and right
side covers, and the top cover. (See page
63 for removal procedures.)
3.
Remove the headlight unit bolt on each
side of the snowmobile.
4.
Unhook the headlight unit as shown, then
lift it up and move it forward, away from
the handlebar.
NOTICE:
Be careful not
to scratch the snowmobile when mov-
ing the headlight unit.
[ECS00920]
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
Spark plug tightening torque:
13 Nm (1.3 m·kgf, 9.4 ft·lbf)
1.
Throttle stop screw
Standard engine idling speed:
1300–1500 r/min
1.
Headlight unit bolt
1.
Headlight unit
1
1