That "knob thingy" is a vent for the fuel pump. It allows air into and out of the space under the diaphragm because of the pulsations of the diaphragm. It also helps to ventilate the crankcase. If you have fuel coming out there you probably have a bad diaphragm. You could have two possible setups for the fuel. One is a tee from the output of the fuel pump; one side to the carb the other to the tank. Since you have a starting tank that is probably the most appropriate. The other setup is if you have a vent chamber that sticks up from the hood right in front of the gas tank. This also has a tee but the one line for this tee comes from the fuel pump and the other goes to the carb. The third connection is to the vent chamber. There is another fitting on the bottom of the vent chamber which has a larger line that goes back to a tee in the suction line for the fuel pump. No direct connection to the fuel tank. If you need further info my Email is open.
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 - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
... [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.
