TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Garden Tractors Discussion Forum

BS armature troubleshooting

Welcome Guest, Log in or Register

Author

Chuck Gibson

08-26-2005 19:17:39

Report to Moderator

Hey Gang,
Is there any way to diagnose a Briggs & Stratton armature without just replaceing it to see if you start getting a spark?
Thanks in advance!!!
Chuck

[Log in to Reply] [No Email]

shannon from ohio

08-27-2005 20:38:52

Report to Moderator

Re: BS armature troubleshooting in reply to Chuck Gibson, 08-26-2005 19:17:39

If your engine has breaker points,make sure to check flywheel key also to make sure it isnt sheared??

[Log in to Reply] [No Email]

twoton

08-27-2005 04:43:11

Report to Moderator

Re: BS armature troubleshooting in reply to Chuck Gibson, 08-26-2005 19:17:39

unhook the sparkplug wire and check the resistance from the wire to ground--should be about 2-3 kohms---too high and you may have an open--if resistance is way low the coil is shorted

[Log in to Reply] [No Email]

JTB

08-26-2005 20:33:36

Report to Moderator

Re: BS armature troubleshooting in reply to Chuck Gibson, 08-26-2005 19:17:39

Have u checked the volts at the battery?Should be about 13.00 to 14.70 wide open throttle..

[Log in to Reply] [No Email]

Chuck Gibson

08-26-2005 20:46:33

Report to Moderator

Re: BS armature troubleshooting in reply to JTB, 08-26-2005 20:33:36

Actually, it won't start. I am not getting any spark. I cleaned the contacts on the armature and the magnets on the flywheel and set the armature gap at 10,000's, but still no fire. I also unhooked the ground wire to see if the ignition switch was shorting out but still no fire. The only other thing that I can think of is the armature coil is shorting out. Can you think of anything that I missed?
Thanks,
Chuck

[Log in to Reply] [No Email]

08-27-2005 05:54:35

Report to Moderator

Re: BS armature troubleshooting in reply to Chuck Gibson, 08-26-2005 20:46:33

If you have a new enough engine that it is magnetron ignition and you have unhooked the ground wire and still have no fire, then you have a bad coil. You have put a new plug in it first, I assume? If you have a new plug, no fire, then replace coil.

[Log in to Reply] [No Email]

Bob

08-26-2005 21:24:50

Report to Moderator

Re: BS armature troubleshooting in reply to Chuck Gibson, 08-26-2005 20:46:33

Do you have the newer ignition "armature", with the built-in magnetron electronic igntion, or does your engine still have breaker points?

Incidently, cleaning the rust off the magnets and coil pole-pieces is not necessary unless there is enough build-up of rust that there is physical contact (read... they rub) between the coil polepieces and the flywheel. Only when there is contact, does the rust bother the magnetic field.

[Log in to Reply] [No Email]

Guest Brown

09-06-2005 08:25:08

Report to Moderator

Re: BS armature troubleshooting in reply to Bob, 08-26-2005 21:24:50

A Stumper:

I have tried the different methods given to me through postings, but none have been successful so far. There is apparently something I have overlooked. Here is the what I have taken care of so far on my B&S Riding Lawnmower, 12 HP:

(1) Replaced the block
(2) Set the flywheel on with a new shear pin
(3) Put a new armature on, setting appropriate clearance
(4) Checked all safety switches, i.e., seat, clutch, mower engagement
(5) Put in new spark plug
(6) Used vice grips to fasten spark plug to side of engine, turned over engine, but still no spark.

What have I overlooked?

P.S. I have to get this running because I'm knee-deep in Blue Grass!

Thank you!

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

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 ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
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.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy