Yamaha YZF-R125 Service Manual: 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.

Checking the radiator


2. Check:

  • Radiator hoses Cracks/damage Replace.

3. Measure:

  • Radiator cap opening pressure Below the specified pressure
    Replace the radiator cap.

a. Install the radiator cap tester "1" and radiator cap tester adapter "2" to the radiator cap "3".


Checking the radiator


b. Apply the specified pressure for ten seconds and make sure there is no drop in pressure.

4. Check:

  • Radiator fan Damage Replace.


    Malfunction Check and repair.


    Refer to "COOLING SYSTEM" on page 8-25.

    Radiator
    ...

    Installing the radiator
    1. Fill: Cooling system (with the specified amount of the recommended coolant) Refer to "CHANGING THE COOLANT" on page 3-15. 2. Check: Cooling system Leaks Repair or replace any ...

    Other materials:

    Checking the lean angle sensor
    1. Remove: Lean angle sensor 2. Check: Lean angle sensor output voltage Out of specification Replace. a. Connect the lean angle sensor to the wire harness. b. Connect the pocket tester (DC 20 V) to the lean angle sensor coupler as shown. Positive tester probe yellow/green "1" Neg ...

    Engine break-in
    There is never a more important period in the life of your engine than the period between 0 and 1000 km (600 mi). For this reason, you should read the following material carefully. Since the engine is brand new, do not put an excessive load on it for the first 1000 km (600 mi). The vari ...

    Multi-function display
    Multi-function display Multi-function display "RESET/SELECT" button WARNING Be sure to stop the vehicle before making any setting changes to the multi-function display. Changing settings while riding can distract the operator and increase the risk of an accident. The multi- ...

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