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Posted on Jan 02, 2017
Hi, remove the electric control panel & check the wiring as sometimes we have seen the wires coming off the voltage change over switches.
Also some of these units you can check the connections in the rear of the alternator & if it has brushes that they are not stuck.
Another problem we have had is the trip switches have went faulty but still switch operates ok, they need to be checked with a probe type tester for conductivety.
Posted on Nov 29, 2008
actually, it sounds like the diodes are blown. Check our diodes.
As for checking stator, find the two wires, typically labeled L1 and L2 that are going to it. Measure with a multimeter. If there is no visual signs of damage, continuity can indicate a good stator. You should not have continuity between either wire and the stator frame.
The same goes for the rotor as well. The resistance measurements will not be the same for each one though.
Unfortunately, Powermate is out of business, and service information is scarce.
Posted on Aug 25, 2009
If the engine is running but no output from the plugs....the VERY common problem is loss of magnetism in the generator after storage.
With the generator off.........
Look at the side of the generator part.....do you see a small + and - on any terminals?
You may have to take a cover off.
Take a 9 volt battery and momentarily put current from this small battery through these terminals.
Now.....start her up and check for power at the plugs.
This fixes 75% of "no output" after being "stored" generators.
Posted on Sep 09, 2009
Testimonial: "you learn if you ask someone that know's...allan"
This sound like a loss of residual magnetism in the generator. The field will need to be "flashed".This is also known as re-exciting the field of the generator.
The Coleman manual gives these steps:
1Use a 6 Volt lantern batters (dry cell) or a 12 Volt automotive battery.
2.Disconnect all loads from generator.
3. Remove the brush cover (that's the rectangular plastic cover on the end of the generator.)
4. Plug a lamp or light into the generator before starting the engine. The light will illuminlate when ?Voltage has returned.
5. Start the engine with no load connected to the generator.
6. Attach the "-" lead of the battery to the negative brush. Very briefly touch the "+" lead of the battery to the positive brush. Remove as soon as Voltage builds up.
Posted on Oct 09, 2009
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