TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Farmall & IHC Tractors Discussion Forum

H carb adjustment

Welcome Guest, Log in or Register

Author

Paul

12-31-2003 07:47:33

Report to Moderator

What is the rule of thumb or starting point for adjusting the load screw on an H carburator. Is it about three turns out? My H has a lot of fuel smoke when you idle it down after full throttle. Seems like it's running to rich. To adjust it can I open the throttle to full and just set the screw until it runs the best?

[Log in to Reply] [No Email]

The Red

12-31-2003 09:10:09

Report to Moderator

Re: H carb adjustment in reply to Paul, 12-31-2003 07:47:33

On the angled high speed screw at the bottom, I set full rpm and slowly turn it in until the RPM starts to drop off. Then I open it back up 1/2 turn for summer weather, or 3/4 turn for colder weather. Roughly 2 1/2 turns.

There is a separate idle mixture screw that sticks out horizontally towards the top of the lower 1/2 of the carburetor body with the head pointing towards the governor assembly. With that one, set your RPM at idle and fiddle with it until you get the best idle RPM. Most of mine are about 1 turn out.

[Log in to Reply] [No Email]

Thanks

12-31-2003 11:58:42

Report to Moderator

Re: Re: H carb adjustment in reply to The Red, 12-31-2003 09:10:09

Thanks for the input. I went back and looked through the archives and got a lot of good info too. This old H has been giving me fits. If its not smok'in black its surging. Its probably something simple. I'll try it again doing it like you suggested. If I still don't have it right I think I'll check the timing.
Paul

[Log in to Reply] [No Email]

The Red

12-31-2003 13:35:53

Report to Moderator

Re: Re: Re: H carb adjustment in reply to Thanks, 12-31-2003 11:58:42

Paul describe to me what you mean by surging. Is your RPM varying at a given throttle setting?

[Log in to Reply] [No Email]

James Williams

12-31-2003 22:51:37

Report to Moderator

Re: Re: Re: Re: H carb adjustment in reply to The Red, 12-31-2003 13:35:53

Check your float setting,And make sure theres no gas inside of the float

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
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

Website Accessibility Policy