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 InspectionOil Pump Drive Gear Shaft Installation
Apply molybdenum disulfide grease [A] to the oil pump
drive gear shaft.
Apply molybdenum disulfide oil solution to the followings.
Transmission Case [B]
Crankcase [C]
Install the oil pump drive gear shaft and washer [D] as
shown in the figure.
Install the new circlip [E] into the ...
Brake Fluid Change
NOTE
The procedure to change the front brake fluid is as follows.
Changing the rear brake fluid is the same as for
the front brake.
Level the brake fluid reservoir.
Remove:
Screw [A]
Stopper [B]
Front Brake Reservoir Cap [C]
Diaphragm Plate
Diaphragm
Remove the rubb ...
Spring Preload Adjustment
Remove the rear shock absorber from the frame (see
Rear Shock Absorber Removal).
Loosen the locknut and turn out the adjusting nut to free
the spring.
Special Tools - Hook Wrench T=3.2 R37: 57001-1539
Hook Wrench R=35: 57001-1580
To adjust the spring preload, turn in the adjusting n ...