9/10 volt drop from battery to resistor could indicate a corroded ignition switch or bad wiring.
The coil appears to be new. Are there markings on it such as "12 volt external resistor required" indicating that it needs the resistor or could it be a true 12 volt coil that needs no resistor? I've also seen 12 volt conversion kits with a resistor with too much resistance. It should be about 1 1/2 ohms
Output of coil to distributor should read near battery voltage with points open, near zero with points closed.
It also appears to me that the wires on top edge of alternator may be reversed. #2 on right should loop down to big output stud. #1 on left should connect to the ignition switch with a diode in the line to prevent engine continuing to run with switch turned off?
One check would be to disconnect wire from + side of coil and run temporary wire direct from battery + and see if you get spark. This will bypass switch, resistor and that section of wiring.
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 - George's Fordson Major - by Anthony West (UK). This is a bit of a technical info to add on to the article about George's Major in the "A Towny Goes Plowing" article. George bought his Major from a an implement sale about 18 years ago for £200.00. There is no known history regarding its origins or what service it had done, but the following work was undertaken by Harold alone to bring it up to show standard. From the engine number, it was found that the major was produced late 19
... [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.