Yamaha YZF-R125 Service Manual: Checking the coolant temperature sensor
1. Remove:
- Coolant temperature sensor
WARNING
|
2. Check:
- Coolant temperature sensor resistance
Out of specification →Replace.
a. Connect the pocket tester ( 
×
100) to the
coolant temperature sensor terminals as
shown.
- b. Immerse the coolant temperature sensor "1" in a container filled with coolant "2".
NOTE:
Make sure the coolant temperature sensor terminals do not get wet.
c. Place a thermometer "3" in the coolant.
d. Slowly heat the coolant, and then let it cool down to the specified temperature.
e. Check the coolant temperature sensor resistance.
3. Install:
- Coolant temperature sensor
Checking the radiator fan motor
1. Check:
Radiator fan motor
Faulty/rough movement → Replace.
a. Disconnect the radiator fan motor coupler
from the wire harness.
b. Connect the battery (DC 12 V) as shown.
Posi ...
Checking the throttle body sensor assembly
WARNING
Do not remove the throttle body sensor assembly.
Handle the throttle body sensor assembly
with special care
Never subject the throttle body sensor assembly
to strong ...
Other materials:
Checking the front fork
The condition and operation of the front
fork must be checked as follows at the
intervals specified in the periodic maintenance
and lubrication chart.
To check the condition
Check the inner tubes for scratches,
damage and excessive oil leakage.
To check the operation
Place the vehicle ...
Checking the shift shaft
1. Check:
Shift shaft
Bends/damage/wear Replace.
Shift shaft spring
Damage/wear Replace.
Checking the stopper lever
1. Check:
Stopper lever
Bends/damage Replace.
Roller turns roughly Replace
the stopper
lever.
Stopper lever spring
Damage/wear Replace.
...
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.
2. Fill:
Cooling system
(with the specified amou ...