Yamaha YBR 125 workshop manual
Yamaha YBR 125 Crank Position sensor testing
if you aint got one get one the Yamaha YBR 125 haynes Manual
i dont have a bike with an engine in at the minute suppose i could of used a full engine but a bit late now im sat here typing .
easy test anyway just connect the multimeter leads to connectors and test resistence if its out of the below ranges you have a problem .
Yamaha YBR 125 crankshaft position sensor resistence values
248~372 ohms at 20 degrees C .
need a multi-meter see our Tool posts here
Yamaha YBR 125 Basic maintenance and repair motorcycle tool kit
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