Question about Coleman Powermate Premium Plus 6250W Portable Generator

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Engine missing engine starts easily but when power tool is pluged in and turned on tool runs slowly and the engine dies down

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Get a DMM that can measure frequency (Hz), then check that with no load and the idle control set to off the frequency is 61.5 Hz - If it isn't you have to troubleshoot why it isn't and correct it.
You should also check the idle control mechanism if there is one on the generator, with it on the generator should start up at regular speed, then slow to idle speed, then rev back up to regular speed when you draw current from the generator. To check it use the DMM to measure the speed at startup ( should be 61.5 Hz), when it idles down (about 37 Hz), when you're drawing power from any other outlet ( pretty close to 60 Hz). If the generator has idled down and you shut off the idle control it should rev back up immediately.

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Carl

Posted on Dec 02, 2008

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How do I fix my generator


the first thing that I can think of is your engine speed is to slow causing the frequency to be below 60 hz. At half the hertz 30hz the tool will run at half the speed and most likely burn out since most tools are not built to run at variable frequencies. A 4 pole generator (the norm) needs to run at 3600 RPMs under load. Unloaded they are set at 3750 RPMs since they'll slow down slightly under load. There are many throttle setups for small engines so I can't give you a step by step on adjusting the throttle arm on your machine without seeing it. Oh, just a thought, does it have auto-idle button. If so turn it off, for some reason it is not sensing the load. If you have a multimeter with frequency on it, you can use it to help set the rpms.

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