Yamaha YZF-R125 Service Manual: Assembling the oil pump
1. Lubricate:
- Oil pump inner rotor
- Oil pump outer rotor
- Oil pump driven gear
(with the recommended lubricant)
2. Install:
- Oil pump outer rotor
- Oil pump inner rotor "1"
- Oil pump driven gear
- Pin "2"
NOTE:
When installing the inner rotor, align the pin "2" in the oil pump shaft with the groove "a" in the inner rotor "1".
3. Check:
- Oil pump operation Refer to "CHECKING THE OIL PUMP" on page 5-49.
Checking the oil pump
1. Check:
Oil pump drive gear
Oil pump driven gear
Oil pump housing
Oil pump housing cover
Cracks/damage/wear Replace the
defective
part(s).
2. Measure:
Inner-rotor-to-outer-r ...
Installing the oil pump
1. Install:
Oil pump assembly
CAUTION:After tightening the screws, make sure
the
oil pump turns smoothly.
...
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 ...
Replacing an auxiliary light bulb
This model is equipped with two auxiliary
lights. If an auxiliary light bulb burns
out, replace it as follows.
Remove the socket (together with
the bulb) by pulling it out.
Auxiliary light bulb
Remove the burnt out bulb by pulling
it out.
Insert a new bulb into t ...
Checking the valves and valve guides
The following procedure applies to all of the
valves and valve guides.
1. Measure:
Valve-stem-to-valve-guide clearance
Out of specification Replace the
valve
guide.
Valve-stem-to-valve-guide clearance =
Valve guide inside diameter "a" -
Valve stem diameter "b"
2. Replace:
...