(800) 853-2651
SHOP NOW

Super M won't stay timed

A

Anonymous-0

Well-known Member
I replaced the magneto on my Super M and it runs great until it is shut off. Once it is started again it runs badly, like it is out of time. It is even spraying oil out of the air cleaner. I tried timing it 3 times and every time it would run fine until it was shutoff and restarted. Any Ideas? Could this be a faulty magneto? Thanks in advcance!
 
A mag should be times so that the impulse coupling snaps at TDC. As it gets up to running speed (even low idle), a governor system advances the timing to run correctly at full load. It will run a bit ragged at low speed, but not as described. If it is the correct mag, (and not from a diesel which turn backwards) it should act the way I described. if it starts pretty well I suspect the issue may be in the impulse coupling system. JimN
 
You need to check for fire to your plugs when you
try to restart the tractor. You should hear the impulse coupling snapping when cranking. I would install a new set of points and condenser to rule them out. I was wondering if the grounding switch
is somehow at fault. Try unhooking the grounding wire at the mag when trying a restart. Hal
 
I had the same problem on one of my H's. It was the roto disc. It was not a tight fit and would change a few degrees.
 
David, I am a novice when it comes to this tractor. What are you refering to when you say "roto disk" and what did you do to correct this problem? Tony
 
You must log in or register to reply here.

Similar threads

M
Super M distributor
Replies
6
Views
419
matthies
M
R
H magneto no spark after tune
Replies
12
Views
303
560Dennis
560Dennis
C
JD A no spark after warmed up
2
Replies
23
Views
866
wore out
wore out
C
Rough running Cub
Replies
4
Views
280
rustred
rustred
C
Tractor project in March - Super C
Replies
3
Views
353
NY 986
N
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