Posted by ScottyHOMEy on July 04, 2010 at 13:33:29 from (64.222.248.253):
In Reply to: Ignition Switch posted by Bud W on July 04, 2010 at 13:18:52:
The housings and buttons look the same, Bud. What differs are the guts.
For a battery ignition, it's a double-pole switch. There are two connections on the bottom of it, both insulated from ground. One is supplied from the battery. The other runs up to the ignition coil. With the mushroom-cap switch button in the down position, the connection between them is broken/open, so there is no juice running to the ignition. With the switch button in the up/run position the connection is closed , so that there is juice to the coil to fire the ignition.
On a magneto, there is only one terminal on the bottom of the switch. And the switch makes or breaks a connection between that terminal through its own case to ground. A single wire connects that terminal to the side of the magneto. In the down/stop position, the switch is closed, making a connection between the mag and ground, so it cannot run. In the up/run position, that connection is broken and the electrical system within the mag has no steady, unrestricted connection to ground, and is free to do its magneto thing.
Despite their quick-glance similarities, the two switches are entirely different animals.
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 - Talk of the Town: Repairin a Gas Tank - by Staff. This interesting discussion is from the Tool Talk Discussion Forum. Remember that safety is your first priority - make sure you know what you are doing before attempting a potentially dangerous activity!
... [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.
