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rotorwrench · 10-20-2019, 09:07 AM

Polarity will affect the ammeter as was mentioned. A 10-amp discharge indicates high resistance somewhere as well. Just an ignition system won't draw that much. Condition of wiring, polarity, properly connected devices, and condition of the generator can all have an effect. Is this an original ammeter, or a reproduction? Reproduction units are not worth a crap. Make sure the electrical system is properly connected and ground paths are good and clean before doing any adjustments. The battery needs to be in good condition as well. A bad battery can kill a generator. The cut out needs to be functional as well.

10-20-2019, 09:07 AM	#11
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,426	Re: model a amp meter Polarity will affect the ammeter as was mentioned. A 10-amp discharge indicates high resistance somewhere as well. Just an ignition system won't draw that much. Condition of wiring, polarity, properly connected devices, and condition of the generator can all have an effect. Is this an original ammeter, or a reproduction? Reproduction units are not worth a crap. Make sure the electrical system is properly connected and ground paths are good and clean before doing any adjustments. The battery needs to be in good condition as well. A bad battery can kill a generator. The cut out needs to be functional as well.