Yamaha YZF-R125 Service Manual: Checking the starter motor operation
1. Check:
- Starter motor operation
Does not operate → Perform the electric
starting system troubleshooting, starting with
step 4.
Refer to "TROUBLESHOOTING" on page 8-9.
a. Connect the positive battery terminal "1" and starter motor lead "2" with a jumper lead "3".
WARNING
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b. Check the starter motor operation.
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 ...
Checking the stator coil
1. Disconnect:
Stator coil coupler
(from the wire harness)
2. Check:
Stator coil resistance
Out of specification → Replace the
crankshaft
position sensor/stator assembly.
a. Conne ...
Other materials:
Installing the engine
1. Install:
Engine "1"
Engine mounting bolt (rear lower side) "2"
Engine mounting nut (rear lower side) "3"
Engine mounting bolt (rear upper side) "4"
Engine mounting nut (rear upper side) "5"
Engine mounting bolt (front side) "6"
Engine mounting nut (front side) "7"
NOTE:
Do not ...
Installing the steering head
1. Lubricate:
Upper bearing
Lower bearing
Bearing races
2. Install:
Lower ring nut
Rubber washer
Upper ring nut
Lock washer
Refer to "CHECKING AND ADJUSTING
THE STEERING HEAD" on page 3-22.
3. Install:
Upper bracket
Steering stem nut
NOTE:
Temporarily tighten t ...
Checking the front brake hose
1. Check:
Brake hose "1"
Cracks/damage/wear
Replace.
2. Check:
Brake hose holder "2"
Loose connection Tighten the
holder bolt.
3. Hold the vehicle upright and apply the front
brake several times.
4. Check:
Brake hose
Brake fluid leakage Replace the
da ...