Checking The Drive Chain - Yamaha XT660R S Service Manual

SWINGARM AND DRIVE CHAIN
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2. Check:
• pivot shaft
Roll the pivot shaft on a flat surface.
Bends → Replace.
WARNING
_
Do not attempt to straighten a bent pivot
shaft.
3. Wash:
• pivot shaft
• dust covers
• spacer
• bushing
• bearings
Recommended cleaning solvent
Kerosene
4. Check:
• dust covers
• spacers
• oil seals
Damage/wear → Replace.
• bearings
• bushings
Damage/pitting → Replace.
EAS00709

CHECKING THE DRIVE CHAIN

1. Measure:
• a 15-link section a of the drive chain
Out of specification → Replace the drive
chain.
15-link drive chain section limit
(maximum)
240.5 mm (9.47 in)
NOTE:
_
• While measuring the 15-link section, 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.
CHAS