Hey engine gurus what do you think?

Discussion in 'Mechanic and Repair' started by Craftybigdog, Feb 3, 2003.

  1. Craftybigdog

    Craftybigdog LawnSite Senior Member
    Posts: 425

    Hey guys I have a friend that has a cub cadet that when you engade the deck the motor dies no matter if its warmed up or full throttle, we have checked everything and nothing is bound up and every so often they will engade and the motor stays running what do you think? Im thinking the carb. any inputs would be appreciated thanks!:dizzy:
  2. How old & what engine
    1. Clean & gap plug
    2. Clean fuel & carb adjust
    3. Points gap
    4. Governor adjustment
    5. valve agjustment
    6. compression test
  3. crawdad

    crawdad LawnSite Bronze Member
    Posts: 1,939

    Has it got a seat switch? An operator presense sensor? Any other safety switches? If so, check them.
  4. Mr.Wrench

    Mr.Wrench LawnSite Member
    from N.H.
    Posts: 65

    We need some more information about your tractor. How old is it? What model is it? What model is the engine? Kohler? Any safety switches? :confused:
    If it's an old cast iron Kohler i.e. K241 10hp or K301 12hp check your points gap @ .020
    Also, your carburetor settings may be way off. If it runs and idles well you most likely have your idle circuit working OK. At full operating speed (no load) your engine should be turning at 3600 rpm's. Try adjusting your high speed jet, two full turns out is a good starting point.
    Let us know what you have for a machine first.
  5. TedsLawnScaping

    TedsLawnScaping LawnSite Member
    Posts: 11

    If he unhooked the wires on the seat safety switch, one of the wires may be getting grounded depending on how he is sitting or how the wire is hanging under the seat at the time. That would explain the sometiems working and sometimes not. This happened on ours and it about drove us crazy.
  6. Shultz

    Shultz LawnSite Member
    Posts: 83

    try half choke to increase richness of the carb as the blades engage, it could be your carbs out of adjustment. You have to start a lot of weight moving all at once and the richer mixture might help. Just a thought.

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