um DSR EX 125 User Manual

TIMING CHAIN, SPROCKET AND GUIDES
1. Inspect:
- Timing chain.
Rigidity/damage => Renew chain and sprockets.
2. Inspect:
- Drive sprockets
Damage/wear => Renew the sprockets and the timing
chain.
(1) 1/4 of the tooth
(2) Correct
(3) Roller
(4) Sprocket
3. Inspect:
- Timing chain guide (exhaust) (1).
- Timing chain guide (inlet) (2).
Damage/wear => Renew.
53
INSPECTION AND REPAIR
WORKSHOP MANUAL

um DSR EX 125 Specifications

General

Brand	um
Model	DSR EX 125
Category	Engine
Language	English