Yamaha YZF-R125 Owners Manual: Replacing the fuses

Yamaha YZF-R125 Owners Manual / Periodic maintenance and adjustment / Replacing the fuses

Replacing the fuses

Fuse box
Spare fuse
Headlight fuse
Signaling system fuse
Ignition fuse
Radiator fan fuse
Main fuse

The fuse box is located under the rider seat.

If a fuse is blown, replace it as follows.

Turn the key to "OFF" and turn off the electrical circuit in question.
Remove the blown fuse, and then install a new fuse of the specified amperage. WARNING! Do not use a fuse of a higher amperage rating than recommended to avoid causing extensive damage to the electrical system and possibly a fire.

Specified fuses:

Main fuse:

20.0 A

Ignition fuse:

7.5 A

Signaling system fuse:

7.5 A

Headlight fuse:

15.0 A

Radiator fan fuse:

5.0 A

Turn the key to "ON" and turn on the electrical circuit in question to check if the device operates.
If the fuse immediately blows again, have a Yamaha dealer check the electrical system.

Battery

A poorly maintained battery will corrode and discharge quickly. The electrolyte level, battery lead connections and breather hose routing should be checked before each ride and at the interval ...

Replacing a headlight bulb

This model is equipped with quartz bulb headlights. If a headlight bulb burns out, have a Yamaha dealer replace it and, if necessary, adjust the headlight beam. ...

Other materials:

Checking the speed sensor
1. Check: Speed sensor output voltage Out of specification → Replace. a. Connect the pocket tester (DC 20 V) to the speed sensor coupler (wire harness end) as shown. Positive tester probe gray "1" Negative tester probe gray/black "2" b. Set the main switch to "ON". c. ...

Removing the cylinder head
1. Align: "I" mark "a" on the generator rotor (with the stationary pointer "b" on the generator cover) a. Turn the crankshaft counterclockwise. b. When the piston is at TDC on the compression stroke, align the "I" mark "c" on the camshaft sprocket with the mark "d" on the cylinder h ...

Checking the horn
1. Check: Horn resistance Out of specification Replace. a. Disconnect the horn connectors from the horn terminals. b. Connect the pocket tester ( × 1) to the horn terminals. Positive tester probe horn terminal "1" Negative tester probe horn terminal "2" c. Measure t ...