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Periodic maintenance and adjustment
55
2. Hold the pivot point of the throttle lever
away from the throttle switch by putting
your thumb (above) and forefinger (be-
low) between the throttle lever pivot and
the engine stop switch housing.
While holding the pivot point as described
above, press the throttle lever gradually.
The T.O.R.S. will be activated and the
engine speed will be limited to less than
the clutch engagement speed. (See page
81 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]
ESU11892
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. Remove the front cover (PZ50 /
PZ50RT / PZ50GT / PZ50MT) or open
the shroud (PZ50VT), and then remove
the air filter case cover. (See page 49 for
removal procedures.)
2. Unhook the air filter element frame fas-
teners.
3. 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 and brush off the snow, and then
install the air filter element.
1. Throttle lever pivot
2. Engine stop switch housing
3. Throttle lever
U8GK12E0.book Page 55 Monday, May 19, 2008 11:17 AM