Yamaha RS90RK, Service Manual

Page: 308 / 841

4-25
POWR
TR
DRIVE CHAIN HOUSING
2. Inspect:
• Drive sprocket
1
• Forward driven sprocket 2
• Reverse driven gear
3
• Reverse drive gear 4
• Counter gear
5
• Journal 6
• Chain tensioner
7
Pitting/wear/damage
→
Replace.
• Drive chain
8
Wear/damage
→
Replace.
Shift
→
Clean or replace.
• Shift lever assembly 9
• Bearing (chain tensioner)
0
Pitting/damage
→
Replace the bearing and
the inner race holder as a set.
For the bearing replacement and drive chain
inspection, refer to “WITHOUT REVERSE
MODEL”.
INSTALLATION
1. During installation, pay attention to the follow-
ing.
È
Properly install the rubber seal onto the drive chain
housing, making sure that there are no gaps.
É
Make sure that the bearing seals face towards the
drive chain as shown.
Be sure to install the spacers in their original
positions, otherwise the brake disc and jack-
shaft will stick.
Ë
0.2 ~ 0.7 mm (0.008 ~ 0.028 in)
: ESSO beacon 325 grease or Aeroshell grease
#7A
For the jackshaft and drive chain housing installa-
tion, refer to “SECONDARY SHAFT”.
Ë
C
3
C
1
C
2
È
É
È
C
1
C
2
C
3