AboutMike Wells Expertise PLEASE READ BEFORE ASKING A QUESTION!!! I CAN ONLY ANSWER QUESTIONS ABOUT HARLEYS !!! I DONT KNOW ANYTHING ABOUT OTHER MODELS!!! I have a Harley only shop with 30 years experience located in Ohio. We specialize in complete and total repair, restoration, hi-performance, and custom bike building. I can work on Flat Heads to Twin Cams. Please, dont ask how much somthing is going to cost to fix. Labor prices differ all over te country as well as shop to shop!
Experience Engine rebuilding (can be shipped),
Trans rebuilding (can be shipped),
Restoration,
Custom bike building
Question How do you trouble shot the regulator and alternator on a 1991 Fatboy it was smoking where the regulator plugs into the casing.
Answer Your bike has a stator, not a alternator. What you do is take a OHMs meter and test the OHMs on the stator from ground to one pin and then do the other. Should be zero OHMs. Now go pin to pin and you should show OHMs. Now, start he bike and with a AC volt meter, check the voltage of the stator. Should be around 60 volts at 2000 RPMs. If the stator does not pass the test then its bad. If it does then the regulator is bad.
Good luck and happy riding
Mike