Checking The Drive Chain - Yamaha YFM250RX 2008 Service Manual

REAR SHOCK ABSORBER, SWINGARM AND
DRIVE CHAIN
4. Check:
• oil seals
Damage/wear → Replace.
• bearings
Damage/pitting → Replace.
EBS00496

CHECKING THE DRIVE CHAIN

1. Measure:
• 15-link section
Out of specification → Replace the drive
chain.
15-link drive chain section limit
(maximum)
239.3 mm (9.42 in)
NOTE: 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
and as shown.
• Perform this measurement at two or three dif-
ferent places.
2. Check:
• drive chain
Stiffness → Clean and lubricate or replace.
6-60
CHAS
of the drive chain