There is also an idle mixture screw, it will be back toward the throttle plate, may have a cap or limiter over it, take it off and back it out about 1/2 turn.
Once you get it where it will somewhat idle, spray some carb and choke cleaner (not brake cleaner, has to be flammable) around the boot. Be careful not to get it in the carb throat or it will give a false reading. If there is a vacuum leak, it will change the idle speed when the cleaner is sucked into the engine.
I suspect this is a slide type carb? Has a plastic slide that rises up as the throttle is opened and RPM comes up?
If so, there is a tapered needle attached to the slide, hanging in the main jet. Take the top cover off the slide. There will be a spring holding the slide down. Take the spring out, pull the slide out.
Take the needle out. On top of the needle will be a tiny snap ring. Remove it (work over a clean surface, cause you WILL drop it!), move the snap ring to a lower groove on the needle. I would go all the way to the bottom groove. That will richen the mid/high mixture.
I've had to do that to every one of the new carbs like that, they would not run as sent. @#XX^%%@ tree huggers!
Upload one or more videos to your post. Photo filesizes should be less than 300K and Videos, less than 2MB. Formats allowed are gif, jpg, png, ogg, mp4, mov, and avi. Be sure to use filenames without spaces or special characters, and filetypes of 3 digits lower case.
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 ]
Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
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.
