Yamaha FX Nytro FX10Y Owner's Manual page 62

Periodic maintenance and adjustment
Make sure that the drive guard is tight-
G
ened securely before operating the
snowmobile to protect against severe
injury or death from a broken V-belt or
other part should it come off the snow-
mobile while it is in operation.
ECS00830
NOTICE
Never run the engine with the V-belt re-
moved. Clutch components can be dam-
aged.
The V-belt should be checked before each
ride.
To check the V-belt
1. Remove the shroud and the left side cov-
er, and then remove the drive guard.
(See pages 17 and 44 for removal proce-
dures.)
2. Check the V-belt for wear and damage.
Replace if necessary.
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)
3. Install the drive guard, and then install the
left side cover and the shroud.
56
To replace and adjust the V-belt
EWS00411
WARNING
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.
1. Edge of the secondary sheave assembly
2. Spacer
3. V-belt position adjusting bolt
ECS00510
NOTICE
As the V-belt wears, adjustment may be
necessary. To ensure proper clutch per-
formance, the V-belt position should be
adjusted by adding a spacer on each ad-
justing bolt when the V-belt position
reaches 1.5 mm (0.06 in) below the edge of
the secondary sheave assembly.