Drive Chain - Suzuki EN125-2A Service Manual

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:
1. Loose pins
2. Damaged rollers
3. Rusted links
4. Twisted or seized links
5. Excessive wear
If any defects are found, the drive chain must be
replaced.
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:
Ù
Loosen axle nut after pulling out cotter pin
and loosen the lock nut
Adjust the drive chain carefully by tightening
the adjuster .
CHAIN SAG
Loosen the adjuster
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
CHAIN WEAR
Count out 21 pins on the chain and measure the
distance between. If the distance exceeds
259.4 mm, the chain must be replaced.
Drive chain
20 pitch length
.
-
until the chain has 10 20
Ù
securely and lock with
Service Limit
259.4 mm
5
4 3
1 2 3
1
2
19 20 21