Yamaha YZF-R125 Service Manual: Cooling system diagrams

Lubrication diagrams

Clutch push lever Main axle Drive axle Crankshaft Oil filter Oil pump assembly Oil strainer To cylinder head Camshaft Crankshaft Main axle Drive axle ...

Cable routing

Front brake light switch lead Right handlebar switch lead Throttle cable Main switch Clutch cable Clutch switch lead Left handlebar switch lead Sub-wire harness Horn Speed sen ...

Other materials:

Replacing the air filter element and cleaning the check hose
The air filter element should be replaced at the intervals specified in the periodic maintenance and lubrication chart. Have a Yamaha dealer replace the air filter element more frequently if you are riding in unusually wet or dusty areas. In addition, the air filter check hose must be ...

Checking the ignition coil
1. Check: Primary coil resistance Out of specification  Replace. a. Disconnect the ignition coil connectors from the ignition coil terminals. b. Connect the pocket tester ( × 1) to the ignition coil as shown. Positive tester probe red/white "1" Negative tester probe orange ...

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 sh ...