Periodic maintenance and adjustment
66
6.
Install the rubber cap.
ESU13663
Adjusting the throttle lever free
play (PZ50RT / PZ50GT /
PZ50MT)
1.
Slide the rubber cover back.
2.
Loosen the locknut.
3.
To increase the throttle lever free play,
turn the adjusting nut in direction (a). To
decrease the throttle lever free play, turn
the adjusting nut in direction (b).
4.
Tighten the locknut.
5.
Slide the rubber cover to its original posi-
tion.
ESU11851
Checking the throttle lever free
play (PZ50VT / PZ50MP)
Check the throttle lever free play.
Have a Yamaha dealer adjust the free play if
necessary.
ESU11863
Checking the throttle override
system (T.O.R.S.)
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.
Check the T.O.R.S. for proper operation.
1.
Start the engine.
TIP
Refer to the “Starting the engine” section on
page 47.
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, squeeze the throttle lever gradu-
ally.
Standard engine idling speed:
1700–1900 r/min
1. Locknut
2. Throttle lever free play adjusting nut
3. Rubber cover
4. Throttle lever free play
Throttle lever free play:
2.0–3.0 mm (0.08–0.12 in)
Throttle lever free play:
2.0–3.0 mm (0.08–0.12 in)
(a)
(b)
1
2
3
4
U8GKS6E0.book Page 66 Tuesday, April 17, 2012 8:48 AM
