Yamaha YZF-R125 Service Manual: Checking the front 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 reservoir
Cracks/damage
Replace the brake
master cylinder. - Brake master cylinder reservoir diaphragm
Damage/wear
Replace.
3. Check:
- Brake hose
Cracks/damage/wear Replace.
Assembling the front brake master cylinder
WARNING
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Removing the front brake master cylinder
NOTE:
Before removing the front brake master cylinder,
drain the brake fluid from the entire brake system.
1. Disconnect:
Front brake light switch
2. Remove:
Brake hose union bolt
Copp ...
Installing the front brake master cylinder
1. Install:
Brake master cylinder "1"
Brake master cylinder holder "2"
NOTE:
Install the brake master cylinder holder with the
arrow mark "a" pointing forward.
Align the end of the br ...
Other materials:
Clutch lever
Clutch lever
Clutch lever
The clutch lever is located at the left
handlebar grip. To disengage the
clutch, pull the lever toward the handlebar
grip. To engage the clutch, release
the lever. The lever should be pulled
rapidly and released slowly for smooth
clutch operation.
Th ...
Removing the swingarm
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.
2. Measure:
Swingarm side play
Swingarm vertical movement
a. Me ...
Checking the rear brake hose
1. Check:
Brake hoses "1"
Cracks/damage/wear
Replace.
2. Check:
Brake hose holder "2"
Loose connection Tighten the
holder bolt.
Loose or open holder Fasten
properly.
3. Hold the vehicle upright and apply the rear
brake several times.
4. Check:
Brake ho ...