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Farmall & IHC Tractors Discussion Forum
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400 won't idle down...governor ?

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garand1944

07-15-2004 22:52:06




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Hello all ! My trusty old 400 has taken to not wanting to idle down. Runs fine, throttle response is fine and the governor appears to work correctly on the high side (even though it grabs a bit hard). No hunting or anything like that.

Makes it a pain because she wants to diesel when you shut down due to the high engine speed.

Searched old posts and decided maybe the governor spring is weak or the works are gummed up a bit. Am I on the right track ?

Thanks !!!!

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garand1944

07-19-2004 16:30:43




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 Re: 400 won't idle down...governor ? in reply to garand1944, 07-15-2004 22:52:06  
It's fixed. The cavity in the carb body where the tab on the governor shaft fits into the butterfly linkage was full of crud.

The crud was in the bottom and the ears on the actuator were resting there at low speed instead of on the adjusting screw.



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Mag Man

07-16-2004 17:54:07




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 Re: 400 won't idle down...governor ? in reply to garand1944, 07-15-2004 22:52:06  
It may be as simple as grabbing the round linkage tube that comes out of the carb and lightly twist it back and forth If it ideals down tighten it up at that spot. JON Worked for me



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