Yamaha YZF-R125 Service Manual: Electrical components

Electrical components


1. Main switch

2. Clutch switch

3. Front brake light switch

4. Ignition coil

5. Throttle body sensor assembly (intake air pressure sensor, intake air temperature sensor, throttle position sensor)

6. FID (fast idle solenoid)

7. Rectifier/regulator

8. Lean angle sensor

9. Starting circuit cut-off relay

10.Turn signal relay

11.Radiator fan motor relay

12.Headlight relay

13.ECU (engine control unit)

14.Fuse box

15.Starter relay

16.Battery

17.Rear brake light switch

18.Sidestand switch

19.Neutral switch

20.Crankshaft position sensor

21.Coolant temperature sensor

22.Speed sensor

23.Radiator fan

24.Horn

Troubleshooting
If the fuel pump fails to operate. NOTE: Before troubleshooting, remove the following part(s): 1. Rider seat 2. Fuel tank ...

Checking the switches
1. Clutch switch 2. Main switch 3. Front brake light switch 4. Sidestand switch 5. Rear brake light switch 6. Neutral switch 7. Turn signal switch 8. Horn switch 9. Dimmer switch 10.Pass ...

Other materials:

Checking the drive sprocket
1. Check: Drive sprocket More than 1/4 tooth "a" wear Replace the drive chain sprockets as a set. Bent teeth Replace the drive chain sprockets as a set. b. Correct 1. Drive chain roller 2. Drive chain sprocket Checking the rear wheel sprocket Refer to "CHECKING AND R ...

Identification
Vehicle identification number The vehicle identification number "1" is stamped into the right side of the steering head pipe. Model label The model label "1" is affixed to the frame. This information will be needed to order spare parts. ...

Removing and installing the cowlings and panel
Removing and installing the cowlings and panel Cowling A Cowling B Cowling C Cowling D Panel A The cowlings and panel shown need to be removed to perform some of the maintenance jobs described in this chapter. Refer to this section each time a cowling or panel needs to be ...

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