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Carburetors, Mixers, Fuel Pumps and fuel delivery Discussion about misc. carbs, mixers, fuel pumps, injectors.

Carburetors, Mixers, Fuel Pumps and fuel delivery

Coleman Maxa 5000 w/ Tecumseh HM100, needs carburetor


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Old 01-14-2019, 08:55:09 PM
DustyBar DustyBar is offline
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Default Coleman Maxa 5000 w/ Tecumseh HM100, needs carburetor

I ordered a replacement carburetor for the above generator from Amazon. It looks like the low speed mixture screw has a plastic cap over it. Is there ever a low speed adjustment needed since the generator always runs at 3600rpm? If there is how do you make the low speed adjustment, hold the throttle closed to do it? This is what I ordered, https://www.amazon.com/Tecumseh-Carb...18923080&psc=1. Do you concur this is the correct one for a Tecumseh HM100?
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Old 01-14-2019, 11:29:06 PM
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ulgydog56 ulgydog56 is offline
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Default Re: Coleman Maxa 5000 w/ Tecumseh HM100, needs carburetor

epa crap, you should be able to remove the cap and get at the low speed needle screw to adjust, they like running carbs real lean to pass epa, many have a brass slug in them you have to drill out to get at the jet screw, just adjust to highest smoothest speed on a fully warmed up engine and reset your idle screw....
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Old 01-14-2019, 11:53:06 PM
K-Tron K-Tron is offline
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Default Re: Coleman Maxa 5000 w/ Tecumseh HM100, needs carburetor

I bought a genuine Tecumseh carburetor for an HMSK80 about 15 years ago and it was $85. Quality was good and never had a problem with it. That carburetor at $12 cannot be any good. You should be able to find a good used carburetor for your engine and rebuild it if necessary. They were pretty straightforward. Nothing really you can screw up, and very easy to clean.

Chris
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Old 01-15-2019, 12:24:46 AM
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Default Re: Coleman Maxa 5000 w/ Tecumseh HM100, needs carburetor

Others here have recommended $10 to $20 carbs. I've had good luck with one $20 carb last summer for my lawnmower. If this generator was mine I'd probably take the time to disassemble and clean it myself. I just want it to go away.
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Old 01-18-2019, 12:16:15 AM
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Default Re: Coleman Maxa 5000 w/ Tecumseh HM100, needs carburetor

Well I'm completely satisfied with the $12 replacement carburetor. It wasn't an exact fit but close enough it only took 10 minutes to install. Fuel inlet fitting didn't point the same as original, not adjustable but had enough fuel line after rerouting it slightly. Had an extra filtered air fitting which I just plugged. It runs perfectly without any adjustments needed and carries the load just fine. Actually the new carb doesn't have adjustable low or high speed jets. Low speed may be there but its covered and nothing was needed. Runs steady, no load 62.2 hz and about 1/2 load at 60.5 hz.
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Old 01-18-2019, 01:12:32 AM
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Default Re: Coleman Maxa 5000 w/ Tecumseh HM100, needs carburetor

That plastic plug covers a brass low speed jet. Its not adjustable. You remove it to clean and bottom it out to install. Its just a cover. Limiter caps are for EPA carbs that have mixture screws under them.
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