Yamaha YZF-R125 Service Manual: Checking the connections

Yamaha YZF-R125 Service Manual / General information / Checking the connections

Check the leads, couplers, and connectors for stains, rust, moisture, etc.

1. Disconnect:

Lead
Coupler
Connector

2. Check:

Lead
Coupler
Connector

Moisture → Dry with an air blower.

Rust/stains → Connect and disconnect several times.

Checking the connections

3. Check:

All connections

Loose connection → Connect properly.

NOTE:

If the pin "1" on the terminal is flattened, bend it up.

Checking the connections

4. Connect:

Lead
Coupler
Connector

NOTE:

Make sure all connections are tight.

5. Check:

Continuity (with the pocket tester)

NOTE:

If there is no continuity, clean the terminals.

When checking the wire harness, perform steps (1) to (3).

As a quick remedy, use a contact revitalizer available at most part stores.

Checking the connections

Circlips

Before reassembly, check all circlips carefully and replace damaged or distorted circlips. Always replace piston pin clips after one use. When installing a circlip "1", make sure the sharp-edged ...

Special tools

The following special tools are necessary for complete and accurate tune-up and assembly. Use only the appropriate special tools as this will help prevent damage caused by the use of inappropriat ...

Other materials:

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 ...

Special tools
The following special tools are necessary for complete and accurate tune-up and assembly. Use only the appropriate special tools as this will help prevent damage caused by the use of inappropriate tools or improvised techniques. Special tools, part numbers or both may differ depending on the ...

Checking the front brake lever free play
Checking the front brake lever free play Brake lever free play The brake lever free play should measure 2.0-5.0 mm (0.08-0.20 in) as shown. Periodically check the brake lever free play and, if necessary, have a Yamaha dealer check the brake system. WARNING An incorrect brake le ...