Yamaha TTR90 Fahrer- Und Wartungshandbuch Seite 156

SPROCKETS INSPECTION/
DRIVE CHAIN INSPECTION
SPROCKETS INSPECTION
1. Inspect:
• Sprocket teeth a
Excessive wear → Replace.
NOTE:
Replace the drive, driven sprockets and drive
chain as a set.
EC369002
DRIVE CHAIN INSPECTION
1. Remove:
• Master link clip
• Joint 1
• Drive chain 2
2. Clean:
• Drive chain
Place it in kerosene, and brush off as
much dirt as possible. Then remove the
chain from the kerosene and dry the
chain.
3. Measure:
• Drive chain length (15 links) a
Out of specification → Replace.
4. Check:
• Drive chain stiffness a
Clean and oil the chain and hold as illus-
trated.
Stiff → Replace drive chain.
3 - 13
INSP
ADJ
Drive chain length (15 links):
<Limit>: 194.3 mm (7.65 in)