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Farmall & IHC Tractors Discussion Forum
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400 throtle ajustment

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budaa

06-27-2006 11:14:58




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On this new to me 400 it seems that when I move the throtle it takes about half way open before it begins to rev up. Is there an ajustment I can make to get it powered up sooner. Also seems like this would keep it from getting full power.

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JANICHOLSON

06-27-2006 21:00:36




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 Re: 400 throtle ajustment in reply to budaa, 06-27-2006 11:14:58  
Budaa,
It is quite common for the linkage to act like that. The issue is whether it is wide open, when in the last notch.
(do this with tractor off)
Look at the governor control lever on back of gov box. With the hand lever at idle, the gov. lever will be relaxed. Then look at it with it at full throtle on the hand lever. It should move substantially. With the hand lever in that position, disconnect the link to the gov arm. Pull the gov arm farther in that direction against its spring. If the lever will not move farther, the adjustment is OK. if it does move farther than the rod pushes it, the rod needs to be made longer (adjustments in threads) so that it is moved all the way to its stop. The wide open condition is regulated in the governor, not the link, so do not worry about overspeeding the engine by this adjustment. (not all farmalls have the same setup, some have external links to the carb, these can cause serious overspeeding if wrong. Good luck, JimN

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budaa

06-28-2006 03:42:13




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 Re: 400 throtle ajustment in reply to JANICHOLSON, 06-27-2006 21:00:36  
Thanks Jim for the info I will try that this weekend and let you know how it worked.



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