Power Train; Sheave Offset Adjustment - Yamaha RS90GTZ Service Manual

SHEAVE OFFSET ADJUSTMENT

POWER TRAIN

SHEAVE OFFSET ADJUSTMENT
1. Remove:
• Shroud
• Left side cover
• Drive guard
Refer to "PRIMARY SHEAVE AND DRIVE
V-BELT" in CHAPTER 4.
2. Remove:
• Drive V-belt
3. Measure:
• Sheave offset
Use a straightedge that is approximately
470 mm (18.5 in) long, 20 mm (0.79 in)
wide, and 4 mm (0.16 in) thick.
Out of specification → Adjust.
TIP
Push the secondary sheave inward towards
the frame, and then measure the sheave off-
set.
4. Adjust:
• Sheave offset
Adjustment steps:
• Apply the parking brake to lock the second-
ary sheave.
• Remove the secondary sheave bolt
washer
sheave
• Adjust the sheave offset by adding or remov-
ing shim(s) (right)
Adding shim
Removing shim Offset is decreased.
2-31
INSP
Sheave offset:
13.5 ~ 16.5 mm (0.53 ~ 0.65 in)
, shim(s) (left), and secondary
.
.
Offset is increased.
Shim size
Part number
90201-25526 2.0 mm (0.08 in)
ADJ
,
Thickness