Question about Coleman Sport 1850 Generator

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Coleman sport 1850...when turned on .fuel runs into and right out of the carb until line closed. generator not used for two months but fuel was tunred off and unit allowed to run until it ran out of fuel. Problem is?

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When you drained the carb chamber by working with closed line, the floater in the carb chamber has fallen down. After two months later you let the fuel in again, the floater remain in down position and could not shut the input needle valve.

You may try to knock sharply (but not very hard) the carb cover when full, before opening carb cover in order to check the floater and valve. 

Posted on Aug 05, 2010

Testimonial: "Tried shaking the unit but finally had to drop the bowl and jiggle the float to get it loose. It was really stuck. This is a great service. I "

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1 Answer

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.

Jan 21, 2011 | Coleman Sport 1850 Generator

1 Answer

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double check the float ajustment and replace the needle valve for the float carb should be rebuilt kist run around $20.00 and the float about $6.00+ ajust the carb.
hope this helps

Sep 01, 2010 | Coleman Sport 1850 Generator

1 Answer

I have a Coleman generator 1850 pulse and it runs ok for a little


Gravity feed fuel systems are the most simple and reliable way to deliver fuel to the engine, however suffer from a couple of problems.. As the engine heats up fuel tends to be pushed out of the carb back into the fuel tank and if the vent in the gas cap is not working properly fuel lock (or a slight vacuum in the tank) will prevent fuel from entering the carb. There should be a plastic block or manafold seperating the carb from the engine to keep the carb from overheating. Some engines have this block bolted to the engine, then the carb bolted to block., others have two bolts thru the carb and block to engine. In ether case make sure parts are held tightly together so no vacuum leaks thru gaskets.. One should make sure that the gas cap is venting. Sometimes fuel sloshing in the tank will clog the vent-hole in the cap. Try running the generator with the cap loose to see if this helps.. Replace fuel cap as needed if vent is clogged. Good luck with your generator.

Jul 29, 2010 | Coleman Sport 1850 Generator

1 Answer

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Due to vibration, it is very common for 1 or both of the wires to fall the switch. Also, due to placement of the switch, it can also fail due to water running down the inside of the generator housing as well.

May 13, 2010 | Coleman Sport 1850 Generator

1 Answer

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You have a fuel problem. Fuel filter clogged? Carbuerator may need cleaning. Is there a hidden fuel shutoff valve? I have left mine closed... it is embarassing but it happens. I assume you put the choke on initially...

Apr 26, 2010 | Coleman Sport 1850 Generator

1 Answer

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The lack of DC output COULD possibly prevent the stopping. There are likely fuse(s) between the low voltage winding and a rectifier to generate the DC. SOMETIMES these are even inside the generator cover.

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2 Answers

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Need more info,

Does it turn over??

Does it have spark??

Does it have fresh petrol??

Feb 25, 2010 | Coleman Sport 1850 Generator

1 Answer

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Jan 18, 2010 | Coleman Sport 1850 Generator

1 Answer

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Check the fuel line to see if it is clear. Run a wire through it or blow it out with air. Then if it is ok check the fuel tank to make sure nothing is clogging the fuel there. (Sometimes over the years debris gets into the tank and can clog there.) Had an old mower that did the same thing you are talking about, start and then quit. Had to clean the fuel tank out and then it ran like a champ. Good Luck

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