[Farmall] Farmall Model H - Cuts out after 45 min to an hour

[Bigdog]

Keith, those are classic signs of an overheating coil.  But, since you've already replaced the mag, that may not be the case.  One thing to do is to check for spark after it dies.  If you do not still have a bright blue spark about 1/4" to 3/8" long you have an ignition system problem.
    The other possibility is a fuel supply issue.  If the vent in the fuel tank is plugged you may be creating a vacuum in the gas tank.  Try removing the gas cap after it dies.  If you hear a sucking sound as you remove the cap, there is a vacuum in the tank.  It could also be dirt or crud in the tank blocking the outlet.
  ----- Original Message ----- 
  From: keith murphy 
  To: Farmall/IHC mailing list 
  Sent: Wednesday, November 09, 2005 9:36 AM
  Subject: [Farmall] Farmall Model H - Cuts out after 45 min to an hour


  Hi Folks,
   
  I have a 1941 Farmall Model H with a six foot bushhog on the back.  When I run the tractor after about 45 min to an hour it just shuts off.  I let it sit for a while and it goes right back to running fine.  I have replaced the magneto, plugs, carb and the wires, oil, filter,  and still no luck.  The water is moving in the radiator and is hot but suprisingly not scalding hot.  I was thinking it was simply over heating, I do not know - maybe the thermostat?  Any ideas would help!

  Thanks,
  Keith

  http://www.antique-tractor.com/mailman/listinfo/farmall


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