Question about Craftsman 20 hp 42 in. Deck Yard Tractor

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Carftsman DYT 4000 42" 18.5 OHV Intek Plus Fuel Problem

Motor Model# 31p777 Type: 0348e1 Code: 031217ze
Mower Model# 917.273640

Hello, I turned it off after running for about an hour and when I tried to crank it back up it flooded. I waited a while and it started up but ran poorly. I parked it about a week ago and when I went out to crank it today it turned over but blew the manifold vent off connected to the carb and shot gas everywhere, I pulled the air filter and it was soaked with gas. I looked in the carb and its full of gas.I have taken the carb off to try and figure out the situation. I have found that gas is in everything, The manifold vent hose had gas coming out of it and the cylinder behind where the carb attaches was full. I took the spark plug out and gas poured out. I also think the oil might have gas in it as well. It has wires going to the bottom bowl of the carb so I assume its a solenoid. Could that be the problem? If the spark plug stopped getting enough fire could that cause everything to fill up with gas? Im not sure what to try first and thanks in advance for any help.

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  • Corey Malone
    Corey Malone May 11, 2009

    Thanks Jerry, I think the float or the choke sticking was the end result. I took the carb apart and cleaned it up real good. I had to drain the oil 3 times to get all the gas out but what was real weird was the vent coming off the head had close to a half a gallon of gas in it. After getting everything else worked out I left the vent hose off the carb and it ran gas out for a while when it was running. I think I will cut the yard and change the oil one more time. I hope the problem is fixed now. We shall see.....Thanks again

  • Anonymous Aug 23, 2017

    Check that the solenoid gas valve under the carburetor float bowl is closing. It is screwed into that bowl. check it's getting 12 volts, then check that it is free to operate. If it does not close, fuel can also accumulate in the engine with the oil.

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Sounds like you have a float problem their is a needle and seat the lets gas into bowl of carburetor if its bad it will not stop letting fuel in the carburetor causing your problem (Be sure to change oil before ing engine over or you could damage engine (with this problem you get gas into case which will remove oil from engine parts inside !

Posted on May 09, 2009

  • Jerry Cramer May 11, 2009

    Glad I could help ! If you Have other problems feel free to email me .
    Have a nice one !


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