TO CHARGE A BATTERY YOUR ALTERNATOR SHOULD BE PUTTING OUT 13.5 TO 14.5 VOLTS. WITH THE BIKE RUNNING TEST THE OUTPUT AT THE BATTERY TERMINALS AND HAVE SOME ONE REV THE BIKE A LITTLE AND SEE IF THE OUTPUT INCREASES , IF NOT I WOULD LEAN TOWARDS THE ALTERNATOR
Depending how old is the battery , it could be on its way out . check one thing first ...
turn your bike on ,
turn the head light on ,
while given a bit of gas , check if the light increases in brightness .
If it does , the regulator will be ok as well as your magneto/altenator .
if it does not increases in brightness , you have to check the output from your altenator and see if the ouput is greater than after the regulator .
if the output is the same while revs are up , you have a faulty altenator .
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