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Subject: 9N kills on a downhill slope.

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Ron Pieroni    Posted 11-25-2022 at 17:51:47 [URL] [DELETE]        [Reply] [Email]  
  • 9N kills on a downhill slope.
  • My 41 9N runs great except it kill on a downhill slope. I am suspecting the float needle is not working properly. It idles and runs nice and smooth. But, it does flood out to the point on gas coming out the snorkel. I am thinking of a carb rebuild, although it starts right off. Any thoughts?

    Bruce(OR)    Posted 11-25-2022 at 19:19:57 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N kills on a downhill slope.
  • Back it down the hill. Still die? Low fuel, eh? Less that 1/2 tank? How about that aftermarket in line plastic fuel filter? You have one of those 'zero' restriction filters also?

    Bruce(VA)    Posted 11-25-2022 at 18:09:51 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N kills on a downhill slope.
  • Snorkel? What's that?

    Ron Pieroni    Posted 11-25-2022 at 19:19:49 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N kills on a downhill slope.
  • The air intake on the carb.

    Bruce(OR)    Posted 11-25-2022 at 19:17:35 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N kills on a downhill slope.
  • It's around the 1:40 mark

    Bruce(OR)    Posted 11-25-2022 at 19:34:38 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N kills on a downhill slope.
  • My crystal ball says you might have debris holding the float open a bit. Smack the side of the carby with a plastic handle screwdriver in attempt to dis~lodge it.
    It should be note that my crystal ball also is in need of new batteries.
    Does it leak fuel with the fuel on and not running?

    Ron    Posted 11-26-2022 at 00:13:43 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N kills on a downhill slope.
  • Yes it does leak fuel from time to time without it running. I did try tapping the carb to see if there was something holding the float open. That would cause the flooding, but to have it die when going downhill? I have a full tank.

    Bruce(OR)    Posted 11-27-2022 at 00:46:35 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N kills on a downhill slope.
  • How about two problems?
    Carb float being one and electrical connector on the other?
    It dies going down the hill.
    How does it restart? Bottom of the hill? Just crank it until it catches?
    Loose wire on the ign switch? Coil?
    I have a tractor that does the same occasional leak routine as yours.
    I put an inline fuel shut off solenoid in the fuel line.
    Redrock MFG sells those.

    Ron    Posted 11-27-2022 at 12:39:26 [URL] [DELETE]        [Reply] [Email]  
  • Re: 9N kills on a downhill slope.
  • I put in a new ignition switch. I suspect the carb float because it also can flood out badly with gas dribbling out onto the ground after it dies. Are the carb floats made of brass? Thinking they are.

    Bruce(OR)    Posted 11-27-2022 at 20:47:20 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 9N kills on a downhill slope.
  • Ah!. . . . the cloud is lifting.
    Gas dribbles after it dies.
    Yes, the float is brass. Once it fills with with gas, it will cause the float to sink and will not drain off causing the engine to flood and not restart.

    Your engine restarts so the likelihood of a bad float is nil.
    Debris in the fuel system holding the needle valve open is a more likely scenario.
    Once it clears, the flooding stops and the machine starts again.

    Inside if the gas tank is how rusty? Stuff a magnet near the fuel feed to catch metal flakes on the bottom of the tank might be a short term fix.

    I had a machine once. New carb rebuild with a rubber tipped needle, new fuel tank, new shut off valve and it would still occasionally pour gas out of the inlet when sitting. I installed a fuel shut off solenoid and ended it's occasional problem.


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