um DSR SM 125 User Manual

I NSPECTION OF THE FORKS AND GEAR SELECTOR
1. Inspect:
- Fork follower (1).
- Ends of the gear change forks (2).
Scoring/warping/wear/damage => Renew.
2. Inspect:
Wear/damage/scratches => Renew.
- Gear change selector follower.
Wear/damage => Renew.
3. Inspect:
- Gear change fork 1 centre right (1).
- Gear change fork 2 top left (2).
- Gear change fork 3 bottom left (3).
- Guide bar (4).
- Gear change selector (5).
- Guide pin (6).
Roll the guide bar on a flat surface.
Warping => Renew.
WARNING:
DO NOT TRY AND STRAIGHTEN A WARPED BAR.
4. Check:
- Movement of the gear change forks (in the guide bar)
Uneven movement => Renew the fork and the bar.
N.B.:
IF THE GEAR CHANGE FORK AND THE DRIVE SPROCKETS
ARE DAMAGED, RENEW THE SPROCKETS TO EITHER SIDE
ALL TOGETHER.
5. Measurement:
- Warping of the shafts (drive and driven)
Use a support between points and a comparison meter (1).
Outside that specified => Renew the warped shaft.
56
INSPECTION AND REPAIR
WORKSHOP MANUAL

um DSR SM 125 Specifications

General

Brand	um
Model	DSR SM 125
Category	Engine
Language	English