Posted by Dick L on December 24, 2009 at 08:26:35 from (76.76.33.112):
In Reply to: allis b mag timing ??? posted by glennster on December 24, 2009 at 07:30:25:
The quick way I do it is to put the magneto in a vise and set the cover over the points while holding the rotor on the number one nub with the small steel gear pointing down.
It would be the same as the (A) on the fiber gear. That is if the fiber gear is marked.
After I have the cover on I put the cap on and put a Plug wire in number one terminal with a plug on the other end. I ground the plug on the top of the magneto and snap the impulse watching spark at the plug. I move the wire to each terminal and when the it sparks at the fourth terminal I tape the impulse to keep it from turning. It is now ready to fire next on number one. At the tractor I start to bring it up to number one compression stroke and watch that the magneto drive so I can engage the drive before the impulse spring interferes. Turn the crank until i snaps over watching the grounded spark plug in number one terminal. As soon as it sparks I check for TDC in the inspection hole. I adjust the magneto until at the snap of number one the TDC is centered. If it is done this way when it is running and you put a timing light at the inspection hole you will see the TDC line centered.
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