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I have a 10 HP Tecumseh on a power back generator. It starts and runs great but after about an hour it will shut down. The low engine oil light will be flashing. I check the oil and its way over full. It's like it's making its own oil. I can drain some just wear its on the full mark and it will start right up. Anyone no why it's making oil?

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  • 171 Answers

The carb. is flooding over and running into the crankcase, carb. must be repaired to correct problem.

Posted on Jun 25, 2013

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: generator shutting down after 1.5 of run time

I had the same problem with a simular generator. I took it to a repair shop who told me it was the "low oil sensor". They fixed it and it lasted another 1.5 hours. I told my-self I would monitor the oil and cut the "low oil sensor" electronic line. It has laster 12 years as a backup generator running at least 200 hours per year. I still have it but have switched to a larger generator. If you, or whoever uses it, can watch the oil level, then cut this line, it will be fine. This sensor is for those who are not able to measure oil level !!!

Posted on Sep 21, 2008

  • 251 Answers

SOURCE: Coleman Powermate 6250 generator - shut off

the usual reason is a stuck float in your carburator , can be caused by dirt/rust etc , remove carb bowl and clean , there is also a very small needle valve which is attached to this float ( metering needle ) these can leak.
if all else fails always turn off the fuel supply to the generator whilst not in use

Posted on Oct 21, 2009

al_kupchella
  • 843 Answers

SOURCE: Coleman powermate with 10 hp Tecumseh. Never

There are a couple of switches on these things, and their positions and the little icons on them are NOT intuitive - well maybe they are intuitive to the under-20 crowd. I lent mine (which starts right up) to a friend who spent an hour or two pulling the cord before he noticed how to turn it on. I'm not trying to be a smart-alec. I hope this helps.

Posted on May 17, 2010

  • 2 Answers

SOURCE: Coleman Powermate 10 HP Generator shuts down after a few minutes.

I have an HM100 on a 5500 watt gen with the same problem. This motor calls for a J17 spark plug, but I found using a J19 (hotter) plug solved the problem. I think the J17 doesn't get hot enough for a complete combustion burn so it act like fuel starvation thus resulting in the black sooty and wet plug.

Posted on May 18, 2010

  • 1 Answer

SOURCE: Generac generator will start, run for a moment and

Its the Oil sensor just pack the oil sensor wires together with a smal screw and bolt and try starting if it starts your problem is the oil sensor they tend to go bad I have run through several myself . To avoid hassles I now have overidden the sensor but I check the oil level everytime I need to use the generator

Posted on Sep 03, 2010

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We have a Maxa ER 5000 Tecumseh Generator, changed the oil and spark plug, no fire. How do you check the low oil switch?


Nancy, If you think this is the problem, simply unplug it. See links below.
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Coleman Powermate 10 HP Generator shuts down after a few minutes.


I have an HM100 on a 5500 watt gen with the same problem. This motor calls for a J17 spark plug, but I found using a J19 (hotter) plug solved the problem. I think the J17 doesn't get hot enough for a complete combustion burn so it act like fuel starvation thus resulting in the black sooty and wet plug.

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Generator shutting down after 1.5 of run time


I had the same problem with a simular generator. I took it to a repair shop who told me it was the "low oil sensor". They fixed it and it lasted another 1.5 hours. I told my-self I would monitor the oil and cut the "low oil sensor" electronic line. It has laster 12 years as a backup generator running at least 200 hours per year. I still have it but have switched to a larger generator. If you, or whoever uses it, can watch the oil level, then cut this line, it will be fine. This sensor is for those who are not able to measure oil level !!!

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