Yamaha YZF-R125 Service Manual: Checking the rear brake caliper
1. Check:
- Brake caliper piston "1"
Rust/scratches/wear
Replace the
brake caliper piston. - Brake caliper cylinder "2"
Scratches/wear
Replace the
brake caliper assembly. - Brake caliper body "3"
Cracks/damage
Replace the
brake caliper assembly. - Brake fluid delivery passages
(brake caliper body)Obstruction
Blow out with compressed air.Obstruction Blow out with compressed air.
| WARNING Whenever a brake caliper is disassembled, replace the brake caliper piston dust seals and piston seals. |
2. Check:
- Brake caliper bracket
Cracks/damage
Replace.
Disassembling the rear brake caliper
1. Remove:
Brake caliper piston "1"
Brake caliper piston dust seal "2"
Brake caliper piston seal "3"
a. Blow compressed air into the brake hose joint
opening "a" to force out the pisto ...
Assembling the rear brake caliper
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
as ...
Other materials:
Checking the ignition timing
NOTE:
Prior to checking the ignition timing, check the
wiring connections of the entire ignition system.
Make sure all connections are tight and free of
corrosion.
1. Remove:
Rider seat
Left lower side cowling
Refer to "GENERAL CHASSIS" on page 4-1.
2. Remove:
Timing mark acces ...
Changing the coolant
1. Remove:
Lower side cowlings
Refer to "GENERAL CHASSIS" on page 4-1.
2. Remove:
Radiator cap "1"
WARNINGA hot radiator is under pressure.
Therefore,
do not remove the radiator cap when the engine
is hot. Scalding hot fluid and steam may
be blown out, which c ...
Coolant
The coolant level should be checked
before each ride. In addition, the coolant
must be changed at the intervals
specified in the periodic maintenance
and lubrication chart.
To check the coolant level
Place the vehicle on a level surface
and hold it in an upright position.
TIP
...