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Generators & Electric Motors General Discussion Antique Generators and Old Electric Motors: Questions and answers about restoring and showing old power generation systems.

Generators & Electric Motors General Discussion

Chicago 800-900watt Generator, HF Model 66619

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Old 04-26-2010, 12:17:14 AM
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Default Chicago 800-900watt Generator, HF Model 66619

I know it's a piece of junk to most people but it runs the computer when the power goes out. It's all I need it for and its a good one for what I need.... until today.

The engine runs fine and the speed is the same as all the other times it has ran.... but there is no power. I checked all wires and they're fine. There is 5-7VAC at the NEMA plug but thats all. I have read the articles on here and I think it needs to be flashed.... where would I do that on this generator? there are two sets of wires and the owners manual is practically a joke. the two sets are as follows, two solid blue to the regulator/capacitor thing forgive my terminology, and a red wire and a black wire, the red is 110v out and the black is the neutral.

Maybe it doesn't need flashing, I'm not sure, but it's been a while since it was last used, I put 93octane with 50:1 oil mixture and the engine runs solid and great, at about ~3700rpm.

any suggestions?
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Old 04-29-2010, 12:47:43 PM
Randy.ab9go Randy.ab9go is offline
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Default Chicago 800-900watt Generator, HF Model 66619


I checked the schematic on your unit and it is very simple unit to be sure. About all you can do is check for continuity on the red and black leads and the two going to the cap. I would have no idea what the readings should be on your unit. You may have some luck @ a Harbor Freight store by asking the manager if you could take some readings on the display unit. Make sure that there is no continuity between the output (red black) windings and the cap windings and none to the frame from either winding. Check for obvious broken connections and have the cap tested at an electric motor shop. If all checks out, flash the unit by placing 12 volts DC on the output winding for an second. Then start the gen and see if you have power.

Good luck,
Randy AB9GO.

p.s. Let me know how it turns out.
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