Yamaha YZF-R125 Service Manual: Fuel pump system

Troubleshooting details

This section describes the measures per fault code number displayed on the FI diagnostic tool. Check and service the items or components that are the probable cause of the malfunction following t ...

Circuit diagram

4. Main fuse 5. Main switch 9. Battery 17.Engine stop switch 25.ECU (engine control unit) 30.Fuel pump 64.Ignition fuse ...

Other materials:

Assembling the front fork legs
The following procedure applies to both of the front fork legs. WARNING Make sure the oil levels in both front fork legs are equal. Uneven oil levels can result in poor handling and a loss of stability. NOTE: When assembling the front fork leg, be sure to rep ...

Unstable handling
Handlebars - Bent or improperly installed right handlebar - Bent or improperly installed left handlebar 1. Steering head components - Improperly installed upper bracket - Improperly installed lower bracket (improperly tightened ring nut) - Bent steering stem - Damaged ball bearing or bearing ...

Checking the rocker arms and rocker arm shafts
The following procedure applies to all of the rocker arms and rocker arm shafts. 1. Check: Rocker arm Damage/wear Replace. 2. Check: Rocker arm shaft Blue discoloration/excessive wear/pitting/ scratches  Replace or check the lubrication system. 3. Measure: Rocke ...