Yamaha WR250FM Bicycle User Manual


 
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INSP
ADJ
SPROCKETS INSPECTION/DRIVE CHAIN INSPECTION
SPROCKETS INSPECTION
1. Inspect:
Sprocket teeth a
Excessive wear Replace.
N
OTE:
Replace the drive sprocket, rear wheel
sprocket and drive chain as a set.
DRIVE CHAIN INSPECTION
1. Remove:
Drive chain 1
N
OTE:
Remove the drive chain using a drive chain
cutter 2.
2. Clean:
Drive chain
Brush off as much dirt as possible. Then
clean the drive chain using the chain
cleaner.
CAUTION:
This machine has a drive chain with small
rubber O-rings
1
between the side plates.
Steam cleaning, high-pressure washes,
certain solvent and kerosene can damage
these O-rings.
1
3. Inspect:
O-ring 1 (drive chain)
Damage Replace the drive chain.
Roller 2
Side plate 3
Damage/wear Replace the drive
chain.
4. Measure:
Drive chain length (10 links) a
Out of specification Replace.
Drive chain length (10 links):
<Limit>: 150.1 mm (5.91 in)