If the runout exceeds the service limit, replace the rear sprocket.
Rear Sprocket Warp Standard: TIR 0.4 mm (0.016 in.) or less
Service Limit: TIR 0.5 mm (0.020 in.)

Sprocket Wear Inspection
BrakesFront Fork Disassembly
Remove the front fork (see Front Fork Removal (Each
Fork Leg))
Drain the fork oil (see Front Fork Oil Change).
Take the dust seal [A] off the outer tube.
Remove the retaining ring [B].
Separate the outer tube from the inner tube.
Remove the following parts from the inner tube. ...
Headlight Beam
NOTE
Do not turn the bolts because the reflector
in the headlight comes off.
A. Bolts
The left and right adjusters on the
headlight can move the direction of
the headlight beam to up, down, left
and right by turning each adjuster itself
as the below table.
A. Left Adjuster
...
Oil Pressure Relief Valve Inspection
Remove the oil pressure relief valve (see Oil Pressure
Relief Valve Removal).
Check to see if the valve [A] slides smoothly when pushing
it in with a wooden or other soft rod, and see if it comes
back to its seat by spring [B] pressure.
NOTE
Inspect the valve in its assembled stat ...