Yamaha YZ450F Fahrer- Und Wartungshandbuch Seite 208

SPROCKETS INSPECTION/DRIVE CHAIN INSPECTION
EC368000
SPROCKETS INSPECTION
1. Inspect:
• Sprocket teeth a
Excessive wear → Replace.
NOTE:
Replace the drive, driven sprockets and drive
chain as a set.
DRIVE CHAIN INSPECTION
1. Measure:
• Drive chain length (15 links) a
Out of specification → Replace.
Drive chain length (15 links):
<Limit>: 242.9 mm (9.563 in)
NOTE:
• While measuring the drive chain length, push
down on the drive chain to increase its ten-
sion.
• Measure the length between drive chain
roller 1 and F as shown.
• Perform this measurement at two or three
different places.
2. Remove:
• Master link clip
• Joint 1
• Drive chain 2
3. 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.
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