2-68 PERIODIC MAINTENANCE
Periodic Maintenance Procedures
Rear Shock Absorber Inspection
Bounce [A] the rear of the motorcycle up and down and
check for smooth suspension stroke.
Remove the rear frame (see Rear Frame Removal in the
Check for a broken or collapsed spring.
Check the shock for a bent shaft or oil leaks.
If the shock does not smoothly or damaged, replace or
repair defective parts.
Rear Shock Absorber Oil Change
The oil should be changed in the rear shock absorber at
least once per racing season. The frequency for best per-
formance must be based upon riding conditions and rider
Remove the rear shock absorber (see Rear Shock Ab-
sorber Removal in the Suspension chapter).
Remove the shock absorber spring (see Rear Shock Ab-
sorber Spring Replacement in the Suspension chapter).
Insert a suitable tool to center [A] of the reservoir cap, and
release the nitrogen gas completely (keep the suitable
For instructions on how to use the tool, follow the opera-
tion manual provided by the manufacturer.
The shock contains high-pressure nitrogen gas that
when suddenly released can eject oil and internal
shock parts at high velocity, causing serious injury.
To avoid injury, do not point a suitable tool toward
your face or body when releasing nitrogen gas pres-
sure since an oil mist is often released with the ni-
trogen. Always release nitrogen gas pressure be-
fore disassembling the rear shock absorber to pre-
vent explosive separation of parts.
Adjust the gas reservoir damping adjusters [A] to the soft-
Remove the adjuster assembly [B] and pump the rear
shock to drain the oil.