2-26 PERIODIC MAINTENANCE
Periodic Maintenance Procedures
Stretch the chain taut by hanging a 10 kg (20 lb) weight
[A] on the chain.
Measure the length of 20 links [B] on the straight part [C] of
the chain from the pin center of the 1st pin to the pin center
of the 21st pin. Since the chain may wear unevenly, take
measurements at several places.
Drive Chain 20-link Length
254.0 ∼ 254.6 mm (10.00 ∼ 10.02 in.)
Service Limit: 259 mm (10.2 in.)
If any measurements exceed the service limit, replace the
chain. Also, replace the front and rear sprockets when the
drive chain is replaced.
A chain that breaks or jumps off the sprockets
could snag on the engine sprocket or lock the
rear wheel, severely damaging the motorcycle and
causing it to go out of control. Inspect the chain for
damage and proper adjustment before each ride.
If chain wear exceeds the service limit, replace it
with the standard chain.
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 heavy oil. Shake
the chain while it is in the oil so that oil will penetrate 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
to the rollers and bushings.
Wipe off any excess oil.
Oil applied area [A]