If there are notches worn into the splines, replace the sub clutch hub. Also, replace the steel plates if their teeth are damaged.

Clutch Housing Finger Inspection
Damper Cam InspectionBrake Pad Wear Inspection
Remove the brake pads (see Front/Rear Brake Pad Removal
in the Brakes chapter).
Check the lining thickness [A] of the pads in each caliper.
If the lining thickness of either pad is less than the service
limit [B], replace both pads in the caliper as a set.
Front Brake Pad [C]
Rea ...
Starter Clutch Removal
Remove:
Torque Limiter (see Torque Limiter Removal)
Transmission Assy (see Transmission Assy Removal)
Starter Clutch Shaft Holder Bolt [A]
Starter Clutch Shaft Bolt [B]
Starter Clutch Shaft Holder [C]
Remove the starter clutch shaft [A] using a suitable M8
bolt [B].
Take ...
Oil Pump Drive Gear Installation
Install is the reverse of removal. Note the following.
First, engage the oil pump chain [A] to the gears, and then
install the oil pump drive gear [B].
Turn the “OUT” mark [C] to outside.
Apply a non-permanent locking agent to the oil pump drive
chain guide bolt and the oil pump drive ...