If any is worn down to the service limit, replace the brush assy.
Starter Motor Brush Length [B] Standard: 12.05 mm (0.4744 in.) Service Limit: 6.55 mm (0.258 in.)

Starter Motor Assembly
Commutator Cleaning and InspectionClutch Removal
Remove:
Clutch Cover (see Clutch Cover Removal)
Clutch Spring Bolts [A]
Clutch Springs (with Clutch Spring Holders)
Clutch Spring Plate [B]
Pusher [C]
Remove:
Friction Plates (10) [A]
Steel Plates (9) [B]
Spring [C]
Spring Seat [D]
Hold the sub clutch hub [A] ...
Front Fork Oil Change
Remove the front fork (see Front Fork Removal (Each
Fork Leg)).
Turn the spring preload adjuster fully counterclockwise for
removing the piston rod assy easily.
Hold the inner tube lower end in a vise.
Using the wrench [A], unscrew the top plug [B] out of the
outer tube.
Special Too ...
Radiator Cap Inspection
Remove:
Radiator Cap (see Coolant Change in the Periodic Maintenance
chapter)
Check the condition of the bottom [A] and top [B] valve
seals and valve spring [C].
If any one of them shows visible damage, replace the cap
with a new one.
Install the cap [A] on a cooling system pr ...