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Farmall & IHC Tractors Discussion Forum
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Farmall overreving

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Bill Sheehan

06-27-2007 09:15:56




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I have a Farmall B that I bought not running. I've got it running now. It starts easy, no smoke, and idles just fine. However, as I increase the throttle past 1/3 the engine revs up to max rpm and doesnt come back to normal until I hit the kill switch. As the engine slows down I can turn the kill switch off & lower the throttle the rpms go back to normal. When over reving the throttle contol does nothing if I lower or raise the position. I've replaced the govenor and found a broken spring and replaced that. It seems that the centrifical weights advance the timing and speed of the engine but don't let off. Any ideas. I'm stuck. THANKS

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HENRY E NC

06-27-2007 14:45:31




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 Re: Farmall overreving in reply to Bill Sheehan, 06-27-2007 09:15:56  
It could be the centrificals in the distributer. I had that happen on a boat I repowweered several years ago and I suspect that to be the case in my M right now causing it to backfire when goig down hhill. I had forgotten about that problem until LM reminded me his H had the same problem of not throttleing down.



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Pat-CT

06-27-2007 14:12:07




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 Re: Farmall overreving in reply to Bill Sheehan, 06-27-2007 09:15:56  
this happend to my h but in two places 1 the govner was sticking got that fixed and the other was that the linkage was messed up try disconnecting the linkage and go where the throttle goes into the carburater and open and close it by hand



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Curt Cooke

06-27-2007 10:45:48




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 Re: Farmall overreving in reply to Bill Sheehan, 06-27-2007 09:15:56  
The weights do just the opposite, that is, they are constantly trying to idle the engine. The most common trouble with reving is a worn thrust bearing Riding between the weights is a spacer about an inch long. Then there should be a three piece thrust bearing. If that bearing is gone, or any part of it, you're going to have trouble.



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