Impulse coupler in Fairbanks magneto

How many turns of "preload" is required on the torsion spring of a Fairbanks FMJ4B3 mag,(B Allis) when reassembling it? Thanks in advance!!
 
I can not answer that as such but if you send me an e-mail I can then send you the manual for that mag and in it you should find the answer and then some
 
Depending on the condition of the spring, ½ to 1 ½, keep in mind that this spring is small and in tight quarters, I doubt that most people could even turn the springs past two turns. After assembly give it a couple snaps to check tension and adjust if necessary.
 
The manual is saved on my computer so all you have to do is send me an e-mail and I can then send it to you. Then once you have it you can print it out.
 
You in classic or modern?? If in classic at the bottom of this box it says send e-mail if in modern just click on my name and it will take you to a page to send an e-mail
 
Hi old I'm working on Allis Chalmers C on the Mag. Could you please the book you have on Fairbanks mag. I mostly work on Allis Chalmers ,Farmall ,IH, After working of 25 Years at a John Deere dealer idid not have to work on Mags. I restore tractors now and small engine work I like to do all my own mag and carb work. What would be a good book on mag ,carbs Is the book that Jensales Inc. has
"The World,s Most Complete Magneto Service Manual" For 175.00$ on any help

Dad just picked up a Allis Chalmers 1931 25-40 to restore we will need rear wheels one is rusted out the steel was cut off and rubber welded on and manifold it rusted out

Thank You for any help
Rod in MN
 
What I have in in the computer so just send me an e-mail and I can then send you the manuals I have. I have 2 different ones for the 2 common types of mags used on the A/C tractors
 

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