Posted by Bob M on December 10, 2008 at 05:52:14 from (151.190.254.108):
(System won't let me reply to the original post...)
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Brian - All sounds normal. The ammeter behavior you describe simply means the voltage regulator is doing its job.
The only (minor) irregularity is the observed 10 amp maximum charging current. With anything less than fully charged battery you should see closer to 15 amps at full RPM. This means the generator's 3rd brush may need adjustment:
First use a jumper wire to temporarily ground the regulator's FLD terminal. Now run the engine at full throttle and note the ammeter reading. If is 15 amps or more, do nothing. However if it's LESS than 15 amps, loosen the 3rd brush clamp screw on the back of the generator. Now rotate the 3rd brush a bit closer to the nearest fixed brush, tighten the screw and test again. Repeat if required until you see 15 amps on the ammeter at full throttle.
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