Yesterday's Tractor Co. Parts for Farm Tractors - Compare our Prices!
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

350 throttle problem


 
Post new topic    
View previous topic :: View next topic  
Author Message
L Anderes
New User


Joined: 30 Jun 2012
Posts: 2


Report to Moderator

PostPosted: Thu Nov 01, 2012 11:03 am    Post subject: 350 throttle problem Reply to specific post Reply with quote

Throttle to engine speed response problem. With engine running, throttle in the first notch (low speed) I move it slowly to increase speed. It does not respond until you get to the 9th notch…in continuing to increase speed it does increase speed at every notch until you get to the high speed last notch. (Engine Off) I removed the side plate of the governor and adjusted stop screws per manual. I re-set both screws by several turns to get it to the specs. I then watched the movement of the “arms” in correlation with the throttle linkage…beginning at low end notch one and moving one notch at a time to increase speed. The linkage moved slightly each time the throttle moved one notch for the first five notches…from there on the movement was more noticeable all the way to the top end (notch 20). Engine Running, throttle on first notch I slowly advance to increase speed and get no increase until I get to notch 9…I then slowly continue advancing to full throttle and the engine responds accordingly. Then I rapidly (1 to 2 seconds) lower the throttle to notch 3 and the engine continues to run fast for approx 15 seconds and then the engine drops to idle speed in such a way that it dies. With engine running and throttle on notch 1 I rapidly move to notch 9 and the engine takes about 3 to 4 seconds to respond. The trials were repeated several times and no change in behavior.Ideas???Thanx
 
Back to top
View user's profile
mkirsch
Tractor Guru


Joined: 08 Oct 2007
Posts: 10876


Report to Moderator

PostPosted: Thu Nov 01, 2012 11:29 am    Post subject: Re: 350 throttle problem Reply to specific post Reply with quote

First thing I notice off the bat, the idle speed screw on the carburetor should be set so the engine will not die at idle. It should not be set so low that the engine dies.

You will never get true linear throttle response, so the "notch 9" deal is a red herring. Maybe fixing the slop in the throttle linkages will help this? The lack of governor response is something that definitely needs repair. Unfortunately I am the wrong one to ask about that...

Are the weights and springs intact in the governor? Does everything move freely?
 
Back to top
View user's profile
caseyc
Long Time User


Joined: 05 Aug 2004
Posts: 1391
Location: Toronto, SD

Report to Moderator

PostPosted: Thu Nov 01, 2012 12:15 pm    Post subject: Re: 350 throttle problem Reply to specific post Reply with quote

My 350 doesn't respond till your almost halfway either. I just use it as it does not affect operation. Just assumed that's the way it is and have never thought about it.

Casey in SD
 
Back to top
View user's profile
the tractor vet
Tractor Guru


Joined: 24 May 2000
Posts: 12667


Report to Moderator

PostPosted: Thu Nov 01, 2012 12:24 pm    Post subject: Re: 350 throttle problem Reply to specific post Reply with quote

Your problem lies with worn parts. Starting with ALL the linkage and all the way down into the gov. Rebuild repair all the linkage and then ya get into the Gov. And once inside you will find that the spring has a bunch of slop in the holes of the arms inside , there is suppose to be hardened bushing in them big holes and NO slop . This past summer i rebuilt a friends 400 and he could not believe how much better it runs now. His kid was running my S/MTA and said how fast it responded to the throttle and he wished the 400 did that a few ours later and a quick trip to the machine shop to rebush the inside gov. arms it now only move one notch before something happens.
 
Back to top
View user's profile
rustyfarmall
Tractor Guru


Joined: 07 Feb 2003
Posts: 19815
Location: Southwest Iowa

Report to Moderator

PostPosted: Thu Nov 01, 2012 2:00 pm    Post subject: Re: 350 throttle problem Reply to specific post Reply with quote

The tractor vet wrote:
(quoted from post at 13:24:58 11/01/12) Your problem lies with worn parts. Starting with ALL the linkage and all the way down into the gov. Rebuild repair all the linkage and then ya get into the Gov. And once inside you will find that the spring has a bunch of slop in the holes of the arms inside , there is suppose to be hardened bushing in them big holes and NO slop . This past summer i rebuilt a friends 400 and he could not believe how much better it runs now. His kid was running my S/MTA and said how fast it responded to the throttle and he wished the 400 did that a few ours later and a quick trip to the machine shop to rebush the inside gov. arms it now only move one notch before something happens.


I've been into a few where those holes were severely worn, to the point the spring was almost ready to break through. I welded the hole shut and then drilled a new hole, which fixed the problem, but I like the idea of the hardened bushings even better.
 
Back to top
View user's profile Visit poster's website
the tractor vet
Tractor Guru


Joined: 24 May 2000
Posts: 12667


Report to Moderator

PostPosted: Thu Nov 01, 2012 3:52 pm    Post subject: Re: 350 throttle problem Reply to specific post Reply with quote

You can use bearing bronze or a harder steel and PRESS them in with .0015-0025 interference fit , Drill the hole a little bigger then the dia. of the spring wire then champer both side so that the spring is riding on about half the total thickness of the bushing and also allows for ease of getting the spring in the holes . Doing this cures idling down problems and also make the gov. work like it should .
 
Back to top
View user's profile
NEKS
Long Time User


Joined: 31 Mar 2008
Posts: 1337


Report to Moderator

PostPosted: Thu Nov 01, 2012 6:32 pm    Post subject: Re: 350 throttle problem Reply to specific post Reply with quote

On mine it is the roll pin at the throttle lever. Can't get it out and don't want to beat on it to hard or will break something.
 
Back to top
View user's profile
Display posts from previous:   
Post new topic    Yesterday's Tractors Forum Index -> Farmall & International Harvester (IHC) All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651.

YT Home  |  Forums Home

Copyright © 1997-2014 Yesterday's Tractor Co.

Powered by phpBB © 2001, 2005 phpBB Group

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters