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Periodic maintenance and adjustment
73
The T.O.R.S. will be activated and the
engine speed will be limited to less than
the clutch engagement speed. (See page
122 for the clutch engagement speed.)
WARNING! If the engine speed does
not decrease to less than the clutch
engagement speed, stop the engine
by turning the main switch to the off
position and consult a Yamaha dealer.
Operating the snowmobile with a mal-
functioning T.O.R.S. could result in
loss of control.
[EWS00362]
ESU14081
Checking the air filter
Check that there is no snow under the air filter
element frame after each ride. In addition,
snow may need to be cleaned during a ride
depending on the riding conditions.
RS90GT / RS90LTGT
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 rearward, away from
the air filter case cover. NOTICE: Be
careful not to scratch the snowmobile
when moving the headlight unit.
[ECS00920]
5. Remove the air filter case cover by un-
hooking the fasteners.
1. Throttle lever pivot
2. Engine stop switch housing
3. Throttle lever
1. Headlight unit bolt
1. Headlight unit
1
1
U8JA11E0.book Page 73 Monday, June 14, 2010 10:22 AM