Yamaha YZF-R125 Service Manual: Checking the starter motor operation

Yamaha YZF-R125 Service Manual / Electrical system / Electrical components / 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

A wire that is used as a jumper lead must have at least the same capacity of the battery lead, otherwise the jumper lead may burn.
This check is likely to produce sparks, therefore, make sure no flammable gas or fluid is in the vicinity.

Checking the starter motor operation

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:

Troubleshooting charts
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Adjusting the rear disc brake
1. Check: Brake pedal position (distance "a" from the center of the rider footrest to the center of the brake pedal) Out of specification Adjust. 2. Adjust: Brake pedal position a. Loosen the locknut "1". b. Remove the cotter pin "2", washer "3", and pin "4". c. Turn t ...

Checking the transmission
1. Measure: Main axle runout (with a centering device and dial gauge "1") Out of specification Replace the main axle. 2. Measure: Drive axle runout (with a centering device and dial gauge "1") Out of specification Replace the drive axle. 3. Check: Transmiss ...