Yamaha YZF-R125 Service Manual: 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:

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    Headlight does not come on - Wrong headlight bulb - Too many electrical accessories - Hard charging - Incorrect connection - Improperly grounded circuit - Poor contacts (main or light switch) - Burnt-out headlight bulb Headlight bulb burnt out - Wrong headlight bulb - Faulty battery - Fau ...

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    Installing the thermostat
    1. Install: Thermostat NOTE: Install the thermostat with its breather hole "a" facing up. 2. Install: Copper washer Coolant temperature sensor CAUTION:Use extreme care when handling the coolant temperature sensor. Replace any part that was dropped or subjected to ...

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