Yamaha YZF-R125 Service Manual: Checking the rear brake master cylinder
1. Check:
- Brake master cylinder
Damage/scratches/wear
Replace. - Brake fluid delivery passages
(brake master cylinder body)
Obstruction
Blow out with
compressed air.
2. Check:
Brake master cylinder kit
Damage/scratches/wear Replace.
3. Check:
- Brake fluid reservoir
Cracks/damage Replace.
- Brake fluid reservoir diaphragm
Cracks/damage Replace.
4. Check:
- Brake hoses
Cracks/damage/wear
Replace.
Removing the rear brake master cylinder
NOTE:
Before removing the rear brake master cylinder,
drain the brake fluid from the entire brake system.
1. Disconnect:
Rear brake light switch coupler
2. Loosen:
Rear brake light switc ...
Assembling the rear brake master cylinder
WARNING
Before installation, all internal brake components
should be cleaned and lubricated
with clean or new brake fluid.
Never use solvents on internal brake components.
...
Other materials:
Adjusting the brake pedal free play
Adjusting the brake pedal free play
Brake pedal free play
The brake pedal free play should measure
3.5-4.5 mm (0.14-0.18 in) as
shown. Periodically check the brake
pedal free play and, if necessary, have
a Yamaha dealer adjust it.
WARNING
An incorrect brake pedal free play
in ...
Checking the swingarm
1. Check:
Swingarm
Bends/cracks/damage
Replace.
2. Check:
Pivot shaft
Roll the pivot shaft on a flat surface.
Bends Replace.
WARNINGDo not attempt to straighten a bent pivot
shaft.
3. Wash:
Pivot shaft
Washer
Swingarm adjusting collar
Du ...
Chain drive
Removing the drive chain
1. Stand the vehicle on a level surface.
WARNINGSecurely support the vehicle so that there
is
no danger of it falling over.
NOTE:
Place the vehicle on a suitable stand so that the
rear wheel is elevated. ...