Yamaha 2004 YXR660 Service Manual page 262

FRONT CONSTANT VELOCITY JOINTS, DIFFERENTIAL
GEAR AND DRIVE SHAFT
3. Install:
• a bolt of the specified size 1
(into the drain plug hole)
CAUTION:
Finger tighten the bolt until it holds the ring
gear. Otherwise, the ring gear will be dam-
aged.
4. Attach:
• gear lash measurement tool 1
• dial gauge 2
Gear lash measurement tool
P/N. YM-01467, 90890-01467
a Measuring point is 21 mm (0.83 in)
5. Measure:
• gear lash
Gently rotate the gear coupling from
engagement to engagement
Differential gear lash
0.05 ~ 0.25 mm
(0.002 ~ 0.010 in)
NOTE:
Measure the gear lash at four positions. Rotate
the shaft 90° each time.
Adjusting the differential gear lash
1. Remove:
• shim(s) (left) 1
• differential gear assembly 2
• shim(s) (right) 3
7 - 15
DRIV
.