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Harry Ferguson Tractors Discussion Forum

Ferguson TO-30 Engine Speed

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Author  [Modern View]

07-05-2014 17:53:13

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Dad has a TO-30 that won't stay at set throttle speed. Will be running just fine with throttle set then all of the sudden it will just drop a few hundred RPMs. The throttle itself is not moving...friction discs are new and you can have you hand on the throttle making sure its not moving and engine still jumps around. Is this a distributor or governor problem? Has good power and runs strong so im thinking worn distributor. Thanks for any and all help!

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07-06-2014 05:10:11

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 Re: Ferguson TO-30 Engine Speed in reply to IAtractorKid, 07-05-2014 17:53:13  
Had a similar problem. When I found the problem it was the cotter key on back of carburetor linkage hitting.

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07-06-2014 05:07:12

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 Re: Ferguson TO-30 Engine Speed in reply to IAtractorKid, 07-05-2014 17:53:13  
Check the Throttle and Governor linkage for worn parts, especially the holes. If there is wear here it will be floating around all over the place. Make sure with the engine stopped and the throttle wide open, that the throttle linkage moves very easily and isn't catching anywhere. You need to check this linkage GENTLY, don't use any pressure to move it as the engine doesn't do that. Check the two springs that they are in good order especially the one that is in the vertical Rod from the Governor. If it is damaged in any way that would cause it. You should re-set the Governor Linkage, if you need the info to do that, email me at the address below and I will send it to you.. John(UK).. fergusontractors@hotmail.com

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07-06-2014 06:00:20

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 Re: Ferguson TO-30 Engine Speed in reply to John(UKI), 07-06-2014 05:07:12  
This tractor doesn't get used much, especially now that its not running right. I think we went through the governor adjustment procedure last year but I don't think it would hurt to go through it again. Maybe we missed something! Thanks

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07-06-2014 06:24:53

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 Re: Ferguson TO-30 Engine Speed in reply to IAtractorKid, 07-06-2014 06:00:20  
I have set you the information about the Governor that you asked for together with some other info that you may find useful for your tractor...John(UK) fergusontractors@hotmail.com

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07-05-2014 18:35:56

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 Re: Ferguson TO-30 Engine Speed in reply to IAtractorKid, 07-05-2014 17:53:13  
Sounds like a governor problem. Check for binding in the linkage between the throttle plate and the gov arm. It should move smoothly from idle to wide open.

There could still be a problem inside the gov. The spool fits in a hole in the end of the cam. There is a vent hole in the cam, if it's carboned up the gov will be sluggish.

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