Question about Coleman Powermate 1,850 W Portable Generator Pm0401853
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Posted on Jan 02, 2017
SOURCE: wont stay running
If the bowl has fresh gas (smell it), then the jetting is plugged up. Remove the carburetor, disassemble the jets (Idle and main) and soak in carburetor spray cleaner--blow out with compressed air. If the fuel in the bowl smells stale, then remove the float and needle valve. Wash the needle valve seat, but not the needle--just wipe clean. Check that fuel runs out of the fuel hose--if not, check for a plugged filter or bad hose. Hope this gets you running.
Posted on Sep 30, 2009
Sound like you've done things in the correct order, tecumseh's are notorious for carb problems if you let as sit in them. Backfiring is timing related (flywheel key) or valve problems. I would take a closer look at the exhaust valve I don't believe it is closing all the way.
Posted on Mar 16, 2009
Most gasoline engines need three basic things to run: proper air/fuel mixture, sufficient compression, and a properly timed spark. Check the easiest, cheapest things first, then check the "Gee, I forgot to turn on the gas" kind of things next, then work your way onwards from there.
Compression can be guesstimated with the proverbial thumb-over-the-empty-spark-plug-hole routine as you turn it over casually to check compression. If it doesn't blow your thumb out of position, you could have a hole in the piston (overheating response) or a stuck or damaged intake or exhaust valve.
Check for fuel flow by carefully disconnecting the fuel line to the carburetor and letting some run into a tin can (no styrofoam coffee cups, please). It should dribble freely. If not, you have to back-track the line and find out where the blockage is.
Spark is one that sounds like you've already tested (spark plug out of the cylinder head, hooked up and laying on the metal engine as you turn it over?) so check timing. You will probably need a manual for this test, although a good estimate is that the plug should fire just a wee bit before Top Dead Center position of the piston. Like I said, a manual comes in handy here.
From what you've mentioned, though, I'd start trouble-shooting at the fuel flow part first.
Posted on Jun 08, 2009
SOURCE: float bowl drain plug stripped,
When you replace the carbs on these motors it can take a bit of time for them to start and run. If there is a primer bulb pump it up and keep pumping, this is basicly force feeding the carb until it has the vacumn to get the regular supply of fuel coming in.
Posted on Mar 25, 2010
if it's flooding the float may have a tiny hole which makes it not float as well and too much fuel will stall the engine...If it's not getting enough fuel to keep running then its usually because of a small piece of dirt blocking a hole..under the carb there should be a brass bolt...take that off and check that the two side holes are clear...then check the center orifice and blow it out...there is also a tiny little hole up near where the threads start...use a wire from a wire brush to make sure its clean....also clean out the bowl and then reassemble...this works 90% of the time for me
Posted on Jul 02, 2010
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