Yamaha YZF-R125 Service Manual: Installing the water pump

1. Install:

  • Water pump assembly "1"
  • O-rings "2"

NOTE:

  • Align the projection "a" on the impeller shaft with the slit "b" on the camshaft sprocket bolt.
  • Lubricate the O-rings with a thin coat of lithiumsoap- based grease.

Installing the water pump


2. Fill:

  • Cooling system (with the specified amount of the recommended coolant)

Refer to "CHANGING THE COOLANT" on page 3-15.

3. Check:

Cooling system Leaks Repair or replace the faulty
part.

4. Measure:

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

Refer to "CHECKING THE RADIATOR" on page 6-3.

    Assembling the water pump
    1. Install: Water pump seal "1" (into the water pump housing "2") CAUTION:Never lubricate the water pump seal surface with oil or grease. NOTE: Install the water pump ...

    Fuel system
    ...

    Other materials:

    Owner's tool kit
    Owner's tool kit Owner's tool kit Engine oil drain attachment The owner's tool kit is located under the rider seat. The service information included in this manual and the tools provided in the owner's tool kit are intended to assist you in the performance of preventive maint ...

    Checking the piston rings
    1. Measure: Piston ring side clearance Out of specification Replace the piston and piston rings as a set. NOTE: Before measuring the piston ring side clearance, eliminate any carbon deposits from the piston ring grooves and piston rings. 2. Install: Piston ring (into the cylind ...

    Changing the engine oil
    1. Remove: Right bottom cowling Right upper side cowling Right lower side cowling Refer to "GENERAL CHASSIS" on page 4-1. 2. Start the engine, warm it up for several minutes, and then turn it off. 3. Place a container under the engine oil drain bolt. 4. Install: Engine oil d ...

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