(800) 853-2651
SHOP NOW

Testing Briggs coil/Megafire module?

A

Aaron SEIA

Well-known Member
Have a no spark issue on my AC B110. Has new coil, plug, and Mega Fire module. Is there a way to test any of this, or do I just throw parts at it until it sparks again? Probably doesn't have 10 hours on everything.
AaronSEIA
 
Disconnect kill lead to ign sw,crank eng & check for spark,if you have spark now then problem in wiring to ign sw from coil,ign sw bad or problem in safety sw's or wiring harness on tractor.

If still no spark with kill lead disconnected,check that connection from megafire module to eng block/chassis is clean/tight.After that check flywheel/coil air gap,manual says .010"-.014" or check instructions for megafire unit,air gap may have to be changed,after that goto link below & read instructions for setting flywheel timing as same is adjustable on 243000 series eng.

If after disconnecting kill lead,checking megafire ground connection & flywheel timing & you still have no spark,remove coil & take to one/more local mower shops & have them check in a coil tester,if coil tests ok,then problem may be one of the following:

1-Megafire unit bad due to heat/vibration depending on where same mounted on eng/tractor.

2-Flywheel magnets weak,this is a somewhat common problem on these old briggs eng,might try changeing flywheel/coil air gap if magnets the problem,you might be able to get around weak magnets this way.
flywheel
 
Touch your magnets with a flatblade screwdriver to see if they have strong magnetism as Joe suggested. Hal.
 
You must log in or register to reply here.

Similar threads

H
Briggs & Stratton push mower no spark
Replies
3
Views
383
cleddy
C
R
No spark
2
Replies
39
Views
2K
rockin
R
W
John Deere 212 Riding Mower Kohler With A 12 hp K301 AQS
Replies
3
Views
527
T.R.K.
T
D
Coil question
Replies
10
Views
636
JMOR
J
D
Coil Question - Follow up
Replies
1
Views
289
Jim L WA
J
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.

Copyright © 1997-2024 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

Back
Top