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:

    Installing the camshaft and rocker arms
    1. Lubricate: Rocker arms Rocker arm shafts 2. Lubricate: Camshaft 3. Install: Camshaft "1" NOTE: Make sure that the camshaft projections "a" and hole "b" are positioned as shown in the illustration. 4. Install: Rocker arms Rocker arm shafts "1" NOTE: Make ...

    Checking the radiator
    1. Check: Radiator fins obstruction clean. Apply compressed air to the rear of the radiator. Damage  repair or replace. NOTE: Straighten any flattened fins with a thin, flat-head screwdriver. 2. Check: Radiator hoses Cracks/damage Replace. 3. Measure: Radiator cap ...

    Adjusting the clutch cable free play
    1. Check: Clutch cable free play "a" Out of specification Adjust. 2. Adjust: Clutch cable free play a. Pull back the rubber cover "1" b. Loosen the locknut "2". c. Turn the adjusting bolt "3" in direction "a" or "b" until the specified clutch cable free play is obtained. ...

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