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Periodic maintenance and adjustment
62
4. Install the drive guard.
5. Install the left side cover (PZ50 /
PZ50RT / PZ50GT / PZ50MT), or install
the left side cover and the left upper cov-
er, and then close the shroud (PZ50VT).
To replace and adjust the V-belt
WARNING
EWS00421
● When installing a new V-belt, make sure
that it is positioned properly. Otherwise,
the V-belt clutch engagement speed will
be changed and the snowmobile may
move unexpectedly when the engine is
started, which could cause an accident.
● Have a Yamaha dealer make this adjust-
ment.
NOTICE
ECS00520
To ensure proper clutch performance as
the V-belt wears, it is necessary to adjust
the gap between the secondary fixed
sheave and the secondary sliding sheave
by changing the positions of the spacers.
Have a Yamaha dealer make this adjust-
ment.
TIP
Apply the parking brake before replacing the
V-belt.
1. Remove the left side cover (PZ50 /
PZ50RT / PZ50GT / PZ50MT), or open
the shroud and remove the left upper
cover and the left side cover (PZ50VT).
(See page 49 for removal procedure.)
2. Remove the drive guard.
3. Rotate the secondary sliding sheave
clockwise and push it so that it separates
from the secondary fixed sheave.
4. Pull the V-belt up over the secondary
fixed sheave.
5. Remove the V-belt from the secondary
sheave assembly and primary sheave
assembly.
1. V-belt wear limit
New V-belt width:
34.1 mm (1.34 in)
V-belt wear limit width:
32.5 mm (1.28 in)
1. Secondary sliding sheave
2. Secondary fixed sheave
1. V-belt
U8GK12E0.book Page 62 Monday, May 19, 2008 11:17 AM