Yamaha YBR 125 Service Manual page 71

Disassembly of engine
3. Disconnect
Guid wire of positive and negative electrode of batt
Guid wire of starting motor
4.i Dsconnect
Cable of clutch
Shift pedal and driving chain
1. Loosen
Nut of rear wheel shaft
Note:
Loo n the
se nut of chain a
the slackness of chain.
2. Disassemble :
Shift pedal
3. Disassemble :
Small chain gear
Driving chain
Kick starter
1. Disassemble :
Nut
Kick starter
Disassembly of engine
1. Place a proper support under frame and engine
(or support the main stand and make it stable )
2. Disassemble :
Mounting bolt (support of lower part of front
side and engine )
Mounting bolt , (support of lower part of
front side and frame)
ENG
d device and increase
just ng
i