I viewed several videos about this issue with the Onan Microquiet 4000. It would start and then shutdown. I bought the Onan service kit for the KY gas model. I replaced the spark plug, gas filter, air filter and changed the oil. I also verified that the fuel pump is delivering fuel to the carburetor. I sprayed carb cleaner in the carb and sprayed carb into the fuel line so it could enter into the carb. Still no luck. I noticed this video and tried it. IT WORKED!!!! It may not solve everyones problem but it solved mine. Just as mentioned in the video, pay close attention to all the pieces, like the spring and the washers and where they go. The carb bowl will also come out when you unscrew the part. There is a small washer at the bottom of the bowl also. Do not lose it. I used carb cleaner and cleaned out the bowl as well. Thank you for making the video. It was a happy ending to my day of frustration.
This is how I fixed mine. In the case of: "I CAN'T START MY GENERATOR" It's has been two years since last time it was running, so I started by checking oil level full at gen (it won't start if low oil becouse of sensores), gasoline more than 1\4 tank in my RV (also safety censors), sparkplug checked for good spark, check the manual circuit braker (ON) at front RV engine compartment for current, also cleaned the carburetor and even installed new one but same situation, then checked wires and found some has been chewed by rats so I replaced them, by this time it started but stay runing only by keep pushing the switch on all the time, so I knew it was electrical problem from the engine itself, so I took the generator out from my RV to work in my garage, ( I did this by myself with some tools and old tricks) it's really heavy for one person. I disassemble the unit at my garage and started by removing the cover, then the cooling fan or flywheel unit (it's 2 items in one unit) until finally I was at the gen rotor and brushes assembly area and this is what I found: one more wire chewed by filthy rats plus the stinky rat nest in the middle of the generator motor coil, I fixed the wire and sanded the commutator copper contacts where the brushes are sitting becouse they were real duty with old urine from the rats. Then I assembled everything back together and bingo it's runing like a champion. For this project materials involved was about $60.00 including an aftermarket new carburetor and an harmonic balancer/steering wheel puller (available at any auto parts for $25.00) to pull the aluminum fan out and (flywheel). Just picture this: (Eny engine run smooth if gasoline and DC current aren't interrupted) so following this important principle you'll always find the problem to be fixed. Also if you have a onan microlite 4000 like mine, don't run it for more than a minute without the cover becouse you'll cook the engine real fast, also keep the eye on the aluminium fan and your fingers after cranking it in case you missing one or two members...just kidding. After testing the gen then put the air cooling assembly back and the rest of components including the cover and done!!! If this can help eaven one person save time and $$$ it'll make me more happy, thanks for reading!!!
Similar problem with mine threw code 36 dealer replaced the carb under warranty turned out I had air in the fuel line between the fuel pump and carb took fuel line off put the end in a container and held the prime button until it ran smooth and clear has ran without problems ever since
Stuck fuel solenoid valve. Clean and replaced. Videos are difficult to make. Thanks for doing it. Love the dog. I added a fuel shut off valve in that fuel line and then insulated it a bit more with that corrugated plastic cover. I run my generator dry by shutting the fuel valve to stop it. I then open the petcock valve and drain the rest of the float bowl. Zero gas in there = zero problems. Running the generator every month can work, but not always. Mine still fails when camping, not during the monthly run. Ha. These make me love my solar panel.
I have the problem which looks like a stuck fuel shutoff valve, but do not know how to remove the valve without taking out the whole carburetor. Can someone give me info on how to do that?? thanks, John
