Yamaha YZF-R125 Service Manual: Checking the throttle body sensor assembly

Yamaha YZF-R125 Service Manual / Electrical system / Electrical components / Checking the throttle body sensor assembly

WARNING
  • Do not remove the throttle body sensor assembly.
  • Handle the throttle body sensor assembly with special care
  • Never subject the throttle body sensor assembly to strong shocks. If the throttle body sensor assembly is dropped, replace it.
Checking the coolant temperature sensor
1. Remove: Coolant temperature sensor WARNING Handle the coolant temperature sensor with special care. Never subject the coolant temperature sensor to strong shocks. If t ...

Throttle position sensor
1. Check: Throttle position sensor a. Connect the digital circuit tester to the terminals of the throttle body sensor assembly coupler as shown. Positive tester probe → gray/red t ...

Other materials:

Assembling the front brake caliper
WARNING Before installation, all internal brake components should be cleaned and lubricated with clean or new brake fluid. Never use solvents on internal brake components as they will cause the brake caliper dust seals and piston seals to swell and distort. ...

Checking the rectifier/regulator
1. Check: Rectifier/regulator output voltage Out of specification → Replace the rectifier/ regulator. a. Set the engine tachometer to the spark plug lead. b. Connect the pocket tester (DC 20 V) to the rectifier/regulator coupler as shown. Positive tester probe red "1" Negat ...

Checking the fuel sender
1. Drain the fuel from the fuel tank. 2. Check: Fuel sender resistance Out of specification → Replace the fuel sender. a. Connect the pocket tester ( × 10) to the fuel sender coupler as shown. Positive tester probe sky blue "1" Negative tester probe orange/white " ...

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