Question about Coleman Powermate Powermate 5000W Generator

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Coleman PM0433500 Brushless Generator will not make power


I have a Coleman Powermate 3500 (Model PM0433500) that will not make AC power. I only let it sit for about 2 months, and it was working when I shut it off last.

I have tried plugging a drill into it, and spinning it backwards. This works to get the drill going under AC power, but only while the drill is running. When I stop the drill, it will not start again unless I spin it backward again.

I have also tried flashing the field, by using a 12V car battery, unplugging spark plug, hooking + of car battery to small terminal of generator outlet, and - of car battery to large terminal of generator outlet. I pull starter rope 4-5 times, and then disconnect battery and start generator. No AC!

Can anyone help me get this generator flashed? Thanks!

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  • daniel_gilfi Jul 04, 2009

    Hello, thanks for the info. It ended up being the capacitor (22 microfarad). The old one was swelled and only reading 4 microfarads.



  • Craig Butler
    Craig Butler May 11, 2010

    You more than likely have a failed voltage regulator. If you still need help, let me know...

  • Christi Starling
    Christi Starling Sep 02, 2019

    thank you daniel...we were ready to take our generator (same model) to the repairman when I happened across your post (same problem)...bought a $10.00 capacitor on ebay, just installed it and...It's fixed! Happily producing power!
    P.S.We had also tried the flashing fix, to no avail.



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Bad capacitor. They cost 13 bucks. Call 800-445-1805 to buy one.

Posted on Jul 29, 2009


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Posted on Jan 02, 2017


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