JRSutton said: (quoted from post at 09:35:01 05/16/12)If you've ever felt a kick back you'll understand that I have a vested interest in knowing EXACTLY what this thing is doing and that it's set up correctly!
Hey JR - been there, done that! As recently as yesterday in fact cranking up a friend's hand start JD A. (A sudden kickback on a flywheel is not nearly as dangerous as a hand crank.....but it still gets your attention!)
Anyway I suggest this as an additional final step to verify the timing is correctly set:
Attach a timing light to the #1 plug wire. (If your tractor does not have a battery you'll need to supply the timing light from a separate 12 VDC source). Now slowly turn the crank while observing the timing mark. If the mag is timed correctly the timing light will flash at exactly TDC.
I then like to retard the mag 3 or 4 degrees AFTER TDC to prevent kickback while cranking.
Do the timing light test several times (several more revolutions of the crank) to make sure the mag trips consistently 3 - 4 deg after TDC.
The broken wrist you save may be your own!
This post was edited by Bob M at 06:03:54 05/19/12.
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