Suzuki EN125-2A, Service Manual

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2-11 PERIODIC MAINTENANCE AND TUNE-UP PROCEDURES
DRIVE CHAIN
Inspect and Clean Every 1 000 km
DRIVE CHAIN
Visually inspect the drive chain for the below listed
possible malconditions. (Lift the rear wheel by
placing the center stand, and turn the rear wheel
slowly by hand when the transmission in NEUTRAL.)
Inspect for:
Wash the chain with kerosene. If the chain
tends to rust faster, the interval must be
shortened.
After washing and drying the chain, lubricate it
with chain lube or gear oil SAE #90.
Check the drive chain for wear and adjust the
chain tension as follows:
Loosen axle nut after pulling out cotter pin
and loosen the lock nut .
Adjust the drive chain carefully by tightening
the adjuster .
Ù
Loosen the adjuster until the chain has 10 20
mm of sag at the middle between engine and
rear sprockets.
The mark on both chain adjusters must be at
the same position on the scale to ensure that
the front and rear wheels are correctly aligned.
After adjusting the drive chain, tighten the lock
nut and the axle nut securely and lock with
-
Ù
CHAIN SAG
Count out 21 pins on the chain and measure the
distance between. If the distance exceeds
259.4 mm, the chain must be replaced.
CHAIN WEAR
Service Limit
Drive chain
20 pitch length
259.4 mm
10-20mm
1 2 3 19 20 21
4 3
1
2
5
If any defects are found, the drive chain must be
replaced.
1. Loose pins
2. Damaged rollers
3. Rusted links
4. Twisted or seized links
5. Excessive wear