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Generator surges unless it runs at half choke

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6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Coleman 6250 generator runs rough

Fresh fuel? Does carburetor have adjustable jets? Turn the high speed jet (at bottom of float bowl) about 1/4 to1/2 CCW (looking at bottom of bowl). If no improvement, carburetor should be torn apart and cleaned. This also applies if there are no adjustable jets. Is there a fuel filter anywhere?

Posted on Jul 14, 2009

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rwvanlue
  • 486 Answers

SOURCE: Yamaha ef2400is generator needs some choke to run

Fuel Starvation - Float Bowl Carburetor
1) remove air filter assembly
*be cautious of tearing the mounting gasket. If it does tear, you HAVE to replace it. It is part of the priming system
2) remove the float bowl fastener. This is the main jet
3) carefully remove the float bowl, the rubber o-ring/gasket will not be able to be used if it is removed, you WILL have to replace it
4) using a spray 'carb cleaner'
spray up thru the center of the carburetor
spray and clean the main jet with cleaner and 'tag' wire
(tag wire is very thin, and can be used to clean the hole in the center of the main jet)
5) clean any debris from inside the bowl or carb body
6) re-install bowl and center bolt, air filter assembly

*if you need gaskets, your local lawn & garden dealer can supply. The kit is cheaper than individual gaskets, and all the parts needed to finish the above repair are in the kit.

Posted on Dec 04, 2009

  • 1267 Answers

SOURCE: My 4 year old Craftsman

Not that i am aware of, however, I suspect that as soon as you load it up it will die again as the load will call for greater speed, and too much fuel from the choke position will cause it to die again.

What I suspect is that your carburator is clogged up at the jets and is not metering the air fuel mxture properly. You may have to disassemble the carburator and clean it. Since the government has mandated that gasoline contain 10% alcohol, it has become a night mare for small engines that are not used very often. The alcohol is very hydroscopic (retains water) and during the off use period, the alcohol evaporates and leaves the water behind to mix with gunk and clog the needle valves.

Try removing the old gasoline. Refill the machine with fresh gasoline and add some "SeaFoam" (an additive) or any other brand additive that will help disolve the built up gunk in the carburator. Remove the air cleaner and try spraying a carburator cleaner down in the air intake while the machine is running, this way the air passages may clear while the new gasoline may dislodge the built up gunk. Note: The carb cleaner will stall the engine.

It is probably wise to run the gas tank dry before storage and only fill when the machine will be used. Stabil is an additive for storage, and it did it's job before the alcohol edict. I am not sure that Stabil will allow long time storage. (more than 3 months) SeaFoam can be purchased at WalMart, stabil is on the shelf of most small engine sales rooms such as Sears.

Posted on Jan 09, 2011

  • 3 Answers

SOURCE: i have a coleman powermate premium plus 6250

if you are running the engine at full CHOKE, then it is flooding the engine, but if you meant off full choke, then the carb is still stopped up. Try soaking in carb cleaner overnight after removing jet & all rubber goods. HOPE THIS HELPS.

Posted on Jan 17, 2011

  • 185 Answers

SOURCE: I have a coleman Generator 1850. It stalls when i

Hello, I would check the carb for being dirty inside. It sounds like the needle valve is dirty, or not adjusted correctly, or there is rust in the carburator and any of these can cause the fuel not to feed into the engine properly. A good cleaning of the carb and proper setting of the needle valves should clean it up. Also check the screen in the fuel tank on the fuel valve.

Posted on Jan 22, 2011

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Hi Joe, I had asked for a little clarification and have not received any information. I will answer this question based on the generator is in good working order and it is a recoil start. Open the petcock, (this is the fuel valve) and give it about a minute to fill the fuel bowl on the carburetor. If your generator has an engine an on/off kill switch, set to on. If the generator has an auto idle switch set it to off. If the engine has a throttle lever located under the carburetor, push it all the way down (full throttle). Pull the choke knob out completely, there is a detent on the choke for half choke, pull it past this for full choke. pull the recoil starter rapidly. As soon as the engine starts running push the choke knob to half choke, this will allow the engine to run smooth while it's warming up. Depending on the climate that you are in, warm up time will vary. After a minute or two in cold climates start pushing the choke knob in, if it starts to run poorly pull it back out too the half position and let it warm up some more. When you can posh the choke in without the engine faltering it is ready to go. In warmer climates you might be able to start the engine without the choke or in the halfway position. Robin Subaru makes some of the finest small engines available. I would choose a Robin over a Honda every time. I hope this gets your generator going, and once again this is based on the generator being in good working order. Good luck, Michael Burke.

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I have a coleman powermate premium plus 6250 generator,put in new plug ,new filter ,changed oil,cleaned the carb,put in new gas. runs ok at half choke but when go full choke it starts backfiring and runs...


if you are running the engine at full CHOKE, then it is flooding the engine, but if you meant off full choke, then the carb is still stopped up. Try soaking in carb cleaner overnight after removing jet & all rubber goods. HOPE THIS HELPS.

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