Yamaha YZF-R125 Service Manual: Assembling the water pump

Yamaha YZF-R125 Service Manual / Cooling system / Water pump / 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 seal with the special tools.
Install the water pump seal with the special tools to the specified depth as shown in the illustration.

Assembling the water pump

A. Push down

3. Mechanical seal installer

4. Middle driven shaft bearing driver

Assembling the water pump

a. 0-0.5 mm (0-0.02 in)

2. Lubricate:

Water pump seal lip

3. Install:

Water pump housing gasket "1"

Water pump housing plate "2"
Impeller shaft
Impeller shaft retainer "3"

NOTE:

Before installing the impeller shaft retainer, lubricate the slit on the impeller shaft end with a thin coat of lithium-soap-based grease.
Install the water pump housing gasket, water pump housing plate, and impeller shaft retainer as shown in the illustration.
After installation, check that the impeller shaft rotates smoothly.

Assembling the water pump

Checking the water pump

1. Check: Water pump housing cover Water pump housing Cracks/damage Replace. Impeller shaft Cracks/damage/wear Replace. Bearing Rough movement Replace. Radiator outlet hose Crac ...

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 thi ...

Other materials:

Types of bulbs
The bulbs used on this vehicle are shown in the illustration. Bulbs "a" and "b" are used for the headlights and usually use a bulb holder that must be detached before removing the bulb. The majority of these types of bulbs can be removed from their respective socket by turning them coun ...

Checking the rear brake master cylinder
1. Check: Brake master cylinder Damage/scratches/wear Replace. Brake fluid delivery passages (brake master cylinder body) Obstruction Blow out with compressed air. 2. Check: Brake master cylinder kit Damage/scratches/wear Replace. 3. Check: Brake fluid reservoir Cracks/ ...

Loading
Adding accessories or cargo to your motorcycle can adversely affect stability and handling if the weight distribution of the motorcycle is changed. To avoid the possibility of an accident, use extreme caution when adding cargo or accessories to your motorcycle. Use extra care when ridi ...