This sounds like an ignition problem. A propane/air mixture ignites at a higher temp than a gasoline/air mixture. If that magneto has gotten a little weak or the points dirty and it's making a weak spark that could be your problem. Personally, I would lose the magneto and change to a battery ignition regardless. Another thing to try (as Nicholson suggested) is to take the intake pipe off the carb and squirt a little gasoline in and see if it hits.
The fuel filter probably needs to be changed but if you're getting anything through then it should be enough to start; you'll have plenty of pressure with a full tank.
The regulator and vaporizer are combined in one unit. Most M conversions copy what the factory did and to find service information look for a 400 or 450 service manual. The setup is the same.
On the tank, what you can't see is that there is a pipe welded on behind the liquid valve that goes to the bottom of the tank. The vapor valve has a pipe that goes to the top of the tank.
Could you post a photo showing the carb side of the tractor?
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 - History of the Nuffield Tractor - by Anthony West. The Nuffield tractor story started in early 1945. The British government still reeling from the effects of the war on the economy, approached the Nuffield organization to see if they would design and build an "ALL NEW" British built wheeled tractor, suitable for both British and world farming.
... [Read Article]
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.
