2-34 PERIODIC MAINTENANCE
Periodic Maintenance Procedures
If the drive chain wear exceeds the service limit, re-
place the chain or an unsafe riding condition may
result. A chain that breaks or jumps off the sprock-
ets could snag on the engine sprocket or lock the
rear wheel, severely damaging the motorcycle and
causing it to go out of control.
Drive Chain Lubrication
The chain should be lubricated with a lubricant which will
both prevent the exterior from rusting and also absorb
shock and reduce friction in the interior of the chain.
If the chain is especially dirty, it should be washed in
diesel oil or kerosene, and afterward soaked in a heavy
oil. Shake the chain while it is in the oil so that oil will pen-
etrate to the inside of each roller.
An effective, good quality lubricant specially formulated
for chains is best for regular chain lubrication.
If a special lubricant is not available, a heavy oil such as
SAE90 is preferred to a lighter oil because it will stay on
the chain longer and provide better lubrication.
Apply oil to the sides of the rollers so that oil will penetrate
into the rollers and bushings.
Wipe off any excess oil.
Oil applied area [A]
Sprocket Wear Inspection
Visually inspect the front and rear sprocket teeth for wear
If they are worn as illustrated or damaged, replace the
[A] Worn Tooth (Engine Sprocket)
[B] Worn Tooth (Rear Sprocket)
[C] Direction of Rotation
If a sprocket requires replacement, the chain is proba-
bly worn also. When replacing a sprocket, inspect the