Yamaha YZF R125 blog electrical post

   

Yamaha YZF R125 Workshop Manuals on Ebay UK 

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Yamaha YZF R125 testing the generator , alternator , stator rotor .

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Testing the Charge of a battery

Test battery at the negative and positive terminals 

If you have a voltage meter you can do some basic tests.

When the engine has been off for at least 1-2 hours with ignition key turned off,
100% Charged 12.60 to 12.8v
75% Charged 12.4v
50% Charged 12.1v
25% Charged 11.9v
0% Charged less than 11.8v


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Yamaha YZF R125 electrical wiring diagrams 

Hard to find these are ill add more if I find any please add in comment if you can find any others

R125 starting circuit wiring diagram 

R125 charging system  

R125 lighting system circuit 

Hard to find these are ill add more if i find any please add in comment if you can find any others

How the stator and rotor generator works on a YZF R125