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Stator Test

1- First, put the bike on the centerstand. Cut the wires on both sides of the stator connector plug. Strip the insulation aprox. 1/2"-1" back on all three yellow wires. Label each wire A, B, and C.

2- With a multimeter, digital or analog, set to read resistance, check each leg to ground for short's. If no short's are found, (o resistance), you're good to go so far.

3- With the meter set to read resistance, check across each leg. A to B, B to C, then C to A. The reading's should be about 3 ohm's. If you read infinite resistance across any of the legs you have an open winding and the stator is bad. If they read good, keep going.

4- A helper is good to have for this next step. With the battery fully charged and the three yellow wire's separated so they cannot make contact, crank the bike. Have your helper rev the bike to 3000rpm after the bike warm's up.

IMPORTANT!!!

You are checking for AC voltage NOT DC voltage!! Make sure the meter is set to read a minimum of 120vac!!

With the bike at 3000rpm, check leg A to B. Note the voltage.

Then check leg B to C. Note the voltage.

Finaly check leg C to A. Note the voltage.

Compare the three readings. They should be between 50-70vac plus or minus about 5vac per leg. If they read good, chances are you've got a bad regulator.


(I also found a bad rectifier by testing the three wires going back to it in the same way as in the first section).

I get about 14 volts steady at 2500 rpm depending on battery condition.
 
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