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I recently purchased a used Coleman Powermate 4000 w generator. I had to clean the carburetor to get it running and for grins I checked the output voltage and I'm getting 135V hot to ground and 270V between the two hot leads. I bought the generator to use as a household backup in case of winter power failure to run the referigerator and a couple lights and hopefully my gas furnace blower motor.

Won't this high a voltage fry my equipment. Is there a way to lower the output voltage.
 

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Did you have a load on it ? Use some thing of a decent size, like a 500 W lamp, or a heater. The voltage may drop to 110-120 range.

BG
 

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We use a 1500 watt heater to "exercise" our genny every three months or so.
 

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Most Colemans didn't have regulated power, RPM's are directly related to output, VAC. At 3600RPM it should put out 120VAC. Test between the 2 spade terminals in the standard 3 pronged 110/120 outlet, the ground is not used for output testing.
 

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I have one of those mines a powermate 4000 teh choke screw is broken off in teh intake and teh return spring on the pull start is broken but I can use a 1/2" drill and crank it till it starts once I fix the choke I'll try to find a return coil spring
 

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Wolfie: Your 10 years too late on this thread. OP hasn't been seen in 7 years here. ☹
 
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