2009 Yamaha Motorsports Apex LTX GT Owners Manual - Page 52

2009 Yamaha Motorsports Apex LTX GT Manual

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Periodic maintenance and adjustment ESU11862 Checking the throttle override system (T.O.R.S.) Check the T.O.R.S. for proper operation. EWS00352 WARNING When checking the T.O.R.S., take precautions to avoid snowmobile movement which could cause an accident: G Make sure that the throttle lever moves smoothly with the engine off before checking the T.O.R.S. G Make sure that the parking brake is applied. G Do not rev the engine to the point that the clutch engages. 1. Throttle lever pivot 2. Engine stop switch housing 3. Throttle lever 1. Start the engine. TIP Refer to the "Starting the engine" section on page 29. 2. Hold the pivot point of the throttle lever away from the throttle switch by putting your thumb (above) and forefinger (below) 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 76 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 malfunctioning T.O.R.S. could result in loss of control. [EWS00362] ESU11882 Checking the air filter Always check that there is no snow under the air filter element frame. 1. Remove the shroud. (See page 41 for removal procedures.) 2. Unhook the air filter case cover fasteners. 46

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Periodic maintenance and adjustment
46
ESU11862
Checking the throttle override
system (T.O.R.S.)
Check the T.O.R.S. for proper operation.
WARNING
EWS00352
When checking the T.O.R.S., take precau-
tions to avoid snowmobile movement
which could cause an accident:
●
Make sure that the throttle lever moves
smoothly with the engine off before
checking the T.O.R.S.
●
Make sure that the parking brake is ap-
plied.
●
Do not rev the engine to the point that
the clutch engages.
1.
Start the engine.
TIP
Refer to the “Starting the engine” section on
page 29.
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
76 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]
ESU11882
Checking the air filter
Always check that there is no snow under the
air filter element frame.
1.
Remove the shroud. (See page 41 for re-
moval procedures.)
2.
Unhook the air filter case cover fasteners.
1.
Throttle lever pivot
2.
Engine stop switch housing
3.
Throttle lever