I cant say for sure not being there, but I have seen many of the big copper starter post (where switch engages) worn down too low or carbon or pitted to the point even a good switch fails to make good contact. Of course as you're already aware the switch has to push down hard and far and deep enough to make good contact.
In any related cases I advise people to remove, clean n wire brush and re attach each and every battery and starter and ground cables and a ground to any thin wimpy rusty sheet metal part can cause a starting problem, I like a ground cable ran down to heavy solid clean shiny metal near the starter.. Make sure the battery is full charged and in good shape also. A loose or burned or corroded resistive connection anywhere in the circuit can cause excess line voltage drop causing poor starter performance.
HOWEVER if as you describe it cranks okay if jumped direct to the starters big side copper post/stud but NOT otherwise sounds more like a switch failure (not deep enough hard solid contact) or the starter post has a problem and they can be replaced if worn too low or damaged...I have cleaned and smoothed them down making them work again.
Upload one or more videos to your post. Photo and video filesizes should be less than 5MB. 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 - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
... [Read Article]
Latest Ad:
Oliver 550 Diesel runs like a watch three point hitch pto engine gone threw about two hundred hours ago nice clean tractor
[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.