Reply to RK...@mindspring.com
All say 0.010"
"Air Gap Adjustment
Rotate flywheel until magnets are adjacent to the ignition pack [...].
Correct air gap between flywheel and coil "heels" should be .010".
This space should be checked with a Lawn-Boy Air Gap Gauge (#604659)
or a piece of .010" PLASTIC shim stock.
If gap is incorrect, loosen the C-D pack mounting screws slightly and
allow flywheel magnets to pull C-D pack against gauge. Tighten screws
securley."
More info than you need - but I have some extra time tonight.