Yamaha YZF-R125 Service Manual: 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.
A. Push down
3. Mechanical seal installer
4. Middle driven shaft bearing driver
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.
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:
Checking the drive chain
1. Measure:
15-link section "a" of the drive chain
Out of specification Replace the drive
chain.
a. Measure the length "a" between the inner
sides of the pins and the length "b" between
the outer sides of the pins on a 15-link section
of the drive chain as shown in the illustration.
...
Installing the clutch
1. Install:
Conical spring washer "1"
NOTE:
Install the conical spring washer as shown in the
illustration.
2. Install:
Clutch housing
Thrust washer "1"
NOTE:
Be sure to install the thrust washer so that its
sharp edge "a" is facing away from the clutch
boss.
3. Instal ...
Multi-function display
1. Multi-function display
2. "RESET/SELECT" button
The multi-function display is equipped with the
following:
a speedometer (which shows the riding speed)
an odometer (which shows the total distance
traveled)
two tripmeters (which show the distance traveled
since they were last ...