Re: why would my generator engine runs great but it will...
With no load on the generator, take a voltage reading at the output plug of the generator, if there is no voltage, check to make sure that no breakers are tripped or fuses blown.
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https://www.youtube.com/watch?v=6esHkPyygWw
Sep 6, 2011 - Uploaded by mainblind
How to make Generac generator run bypassing the low oil sensor and ... Great video on low pressure warning switch removal and ...Pulled off the shroud over the sensor. ... It wouldn't start so I replaced the spark plug, gas, and oil - then it did as yours. ... 1200 Watt Generator Won't start - Duration: 14:49.
Apr 16, 2014 - gasoline engine on portable generator won't start what do I need to do ... PULL, Take OUT the spark Plug , make certain it is clean and DRY and then start allover again. ... start then when talking pulling rope use electric starter - if won't ...several times till starts, moving choke to OFF or RUN position once it ...
Idle control comes into play when there is no power draw forcing the engine to idle with an electro magent. If you feel that the electro magnet is interfering with governor, temp remove the wire to the solenoid. Usually the idle control will not effect how the engine /gen output power. An overloaded condition will cause the engine the go the full throttle as the internal governor of the engine will try to maintain 3600 rpm. Overloaded condition will greatly shorten the life of the generator/engine. Try to use only about 80 % of rated power. Large motors can draw three times running amps. A compressor using 12 to 18 amps to run can draw over 40 amps to start.
If your generator could handle the load in the past, check the engine for loss of power, or the generator for faulty voltage regulator or capacitors out of range. Easy to check. Connect digital volt meter to plug /load and look at volt reading while running with no load and loaded. Voltage should stay between 110 to 120 under load and with no load (unless goes into idle mode). Good luck
More detailed information about the engine can be found by using the engine model number. Look around the fan shroud or engine block. Coleman used different engnes, however your gen may have incorporated a Tecumseh 10 hp engine. Good luck
Somewhere on the Generator is an Idle Control switch, turning this to the off position will stop the generator idling down in the first place. You'll need to do this to use tools that don't draw enough current to trip the idle control system into revving the engine. It may say just how much current you have to draw in the manual (hint, hint).
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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