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:
General information
NOTICEThis manual was produced by MBK Industrie.
primarily for use by Yamaha dealers and their qualified
mechanics. It is not possible to include all the knowledge of a mechanic
in one manual. Therefore, anyone
who uses this book to perform maintenance and repairs on Yamaha vehi ...
Removing the cylinder head
1. Align:
"I" mark "a" on the generator rotor
(with the stationary pointer "b" on the generator
cover)
a. Turn the crankshaft counterclockwise.
b. When the piston is at TDC on the compression
stroke, align the "I" mark "c" on the camshaft
sprocket with the mark "d" on the
cylinder h ...
Troubleshooting details
This section describes the measures per fault code number displayed on the FI
diagnostic tool. Check
and service the items or components that are the probable cause of the
malfunction following the order
given.
After the check and service of the malfunctioning part have been completed,
re ...