Re: Evinrude Selectric 40hp Questions

[outboardnut]

I try to save everything –
I DO NOT KNOW IF THIS INFO APPLIES-
I DO NOT KNOW IF THIS INFO APPLIES-
I believe the Harley Regulators I used were the 10 amp, A Field Circuit, that Frank mentioned.
They are part number 381 309. They are not a direct mount into the OMC solenoid box, needs a little jerry rigging to get it to mount, but mechanically works well. They retail for about 50 bucks.
Don’t be lured into trying a higher rated amperage. A lot of the newer Harley regulators are in the 22 amp range. These will fry the armature.
Aftermarket 12v ELECTRONIC VOLTAGE REGULATOR for HARLEY Generator Big Twin models 1965 through 1969 and Sportsters from 1965 to 1977
VOLTAGE REGULATOR 12v HARLEY GENERATOR SHOVELHEAD PANHEAD 65-69 IRONHEAD 65-77

How to test generator
To bench test a generator:
Use 16 ga jumper wires.

1: Use a jumper wire to ground the field terminal to the case. The field is the smaller of the two.

2: Ground the case to the (-) post of a 12v battery

3: Use another jumper wire to connect the armature (larger) terminal to the (+) post of the battery. Generator should run slowly like a motor. If it does, it is OK right now. That doesn’t mean it isn’t worn out and might fail tomorrow. That’s the way it is with old electrical stuff, right?

EDIT: BTW, the above test also polarizes the generator, so no need to repeat that when putting it into service.