Periodic maintenance and adjustment
55
The T.O.R.S. will be activated and the
engine speed will be limited to less than
the clutch engagement speed. (See page
88 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]
ESU11887
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.
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
49 for removal procedures.)
3.
Remove the headlight unit bolt on each
side of the snowmobile, and then unhook
the headlight unit. (See page 52.)
4.
Remove the air filter case cover by un-
hooking the fasteners.
5.
Lift up the air filter element frame and
check the air filter element. If there is any
snow on the air filter element, remove the
element, brush off the snow, and then in-
stall the air filter element.
1. Throttle lever pivot
2. Engine stop switch housing
3. Throttle lever
1. Air filter case cover fastener
2. Air filter case cover
1. Air filter element frame
1
1
2
1
U8HG10E0.book Page 55 Tuesday, May 18, 2010 5:39 PM
