Drive Chain - GAS GAS EC 125 - 2003 Service Manual

(B)
(A)

DRIVE CHAIN

The drive chain must be checked, adjusted, and lubricated in
accordance with the Periodic Maintenance table. If the chain becomes
badly worn or maladjusted either too loose or too tight the chain
could jump off the sprockets or break.
WARNING
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.
Slack Inspection
The space between the chain and the swing arm at the rear of the
chain slider should be 30-50 mm.Rotate the rear wheel to find the
place where the chain is tightest (because it wears unevenly). Adjust
the drive chain if it has too much or too little slack.
(A). Rivots.
(B). Inner Pipe.
In addition to checking the slack, rotate the rear wheel to inspect
the drive chain and sprockets for damaged rollers, loose pin and
links, unevenly or excessively worn teet, and damaged teeth.
Slack Adjustment
- Loosen the rear axle (A) nut (B) and both chain adjuster locknuts.
- Turn the nuts on the chain adjusting bolts evenly until the drive
chain has 30-50 mm. of space between the chain and the swing
arm. To keep the chain and wheel aligned, the notch on the left
chain adjuster should align with the same swing arm mark that the
on the right chain adjuster aligns with.
86
EC 2003 - -
30-50 mm.
(C)
(B)
(A)