Yamaha RS Venture RST90Y Owner's Manual page 56

Periodic maintenance and adjustment
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.
Have a Yamaha dealer make this adjust-
ment.
TIP
Apply the parking brake before replacing the
V-belt.
1. Open the shroud and remove the drive
guard.
50
2. Rotate the secondary sliding sheave
clockwise and push it so that it separates
from the secondary fixed sheave.
1. Secondary sliding sheave
2. Secondary fixed sheave
3. Pull the V-belt up over the secondary
fixed sheave.
1. V-belt
4. Remove the V-belt from the secondary
sheave assembly and primary sheave
assembly.
5. Temporarily install the new V-belt on the
secondary sheave assembly only, and
then measure the V-belt position. Do not
force the V-belt between the sheaves; the
secondary sliding and fixed sheaves
must touch each other.