Starts and then shuts off

The choke of any engine should be set to "closed" during startups and then moved to "open" once the engine warms up. Depending on the style of your generator, this choke lever may be positioned in a few different places. On many generators, it can be found directly above the air filter on the side of the unit. On others, the choke is builtin to the power control knob (such as with the WEN Inverter series). Either way, it should be set to closed (also referred to as the start or the choke position) when starting the generator. Once the engine ignites, move the choke to the ON/RUN/OPEN position for operation. If the engine is already warm (for instance, if it was running for a while and you are refueling), the choke lever should be set to the RUN (open) position for starting.
or
If the gas tank is full, but no fuel is getting to the carburetor, there may be a problem with the fuel line or fuel valve. The fuel valve controls the flow of fuel from the gas tank to the carburetor. Make sure that this is set to OPEN to allow fuel to flow into the proper channels. If the valve is set to OPEN but the fuel still does not properly flow, you can do two things. First of all, if there is a vacuum relief valve on top of the gas tank, make sure that it has been opened. Secondly, unplug the outlet hose from the intake side of the fuel valve to see if gasoline is freely flowing or not (have a bucket ready in case the gas flows fine). This will help you determine what part of the fuel line (if any) is clogged up. If there is an in-line fuel filter between the fuel valve and carburetor, also check it to make sure it is not blocked.

Check fuel valve is open (completely).



If not the valve then check fuel flow. Turn fuel off and remove carburetor bowl drain. There will be approximately a 1/4 cup of fuel drain out then stop. When flow stops turn fuel valve to ON and a steady trickle of fuel should flow. If it merely drips fuel, then there's blockage or fuel valve is not opening fully. Try loosening fuel cap and see if flow improves.

Fuel from the fuel tank flows to the carburetor and then on into the engine cylinders. From there it seeps into the crank case.
It's a matter of gravity. The gas will seep until it reaches the lowest point in the engine.
There are two methods of correcting this dangerous problem.
1) When you are done using the engine you can turn it upside down, over a large container that is of sufficient size to contain all the gas and oil that will run out of the engine.
or
2) Turn the fuel valve to it's OFF position when you are done running the engine. This stops the fuel from seeping into the crank case from the carburetor.
(And a heads up from one who has personal, first hand experience. Be sure to OPEN the fuel shut off valve when you think you would like to start the engine.)
If you should have this happen again DO NOT try to start the engine!
(That's one of the reasons The Da always said, "Did you check the oil before you started that engine?")
Dump out all of the oil that has been contaminated with fuel and replace it with fresh oil.

Make sure the fuel valve is on, if that does not fix it you will need to drain the bowl on the bottom of the carb. What model is it

This sounds like overheating. These small generators don't have overheating protection, but if a low oil pressure or low oil level is present it may be the reason for stopping.

Check the oil level in the starting conditions and again when it stops. It may become under the "stop" level and after some time the precipitated oil has reached the "start" level. The same may be with oil viscosity and oil pressure.

Try to add some oil or change the oil with bigger viscosity.

This overflow can be caused by:

1. The float sticking

2. Gas inside of the float air chambers

3. The needle and seat have debris in them or a r damaged.

It is not a difficult fix but it does mandate removal of the carburetor float bowl.

You could probably do this yourself. It is much easier if you place the generator on a high work area so you can see the float and needle once you have the float bowl removed. Just make sure you do not drop the float assy so far that the needle comes out of the seat unless you have to remove the hinge pin SCREW for the float to clear the debris near the needles' pointed rubber head.

Thanks for using FixYa

Kelly

Make sure the fuel shut off valve is opened and retry - Not the problem?

Next, take the bottom of the fuel bowl off and clean carb and bowl with carb parts cleaner - wait until dry and re-assemble.

HTH, if so please indicate so
Mike...

Check the oil pressure switch



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shut fuel off at tank, pull fuel line off carb ,slowly turn on fuel if fuel flows freely(real good stream)your carb needs replacement(cant buy parts to rebuild EPA) if fuel just barely trickles out . there is a screen in the fuel tank that is probably clogged

Seems that your carberator maybe clogged at the jets. However, before you purchase a rebuild kit for your carberator make sure the fuel flow coming out of the fuel tank has a steady flow. I have seen where the fuel hole or line at the tank becomes clogged. If you feel the the fuel flow is poor grab a wire type coat hanger and clean out the hole and fuel line. Also, check for fuel filters, replace it if you have one on the genset.