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The magneto air gap is a precision measurement that's taken between the edge of the flywheel and the ignition coil armature. The flywheel and the crankshaft are held together in alignment by the flywheel key.
0.024 - 0.028"
Most of the Briggs engines can be gapped simply with a business card between the flywheel and the magneto.
Yes, on the crankshaft there should be a "slot" called a keyway, and a matching slot on the flywheel, mate a key in the slot of the flywheel and crankshaft, and then your flywheel should be timed, also on a magneto ignition system, makesure the magneto has the proper gap, called "armature air gap" usualy if you put a buossness card in there is a good starting point
Most people use a standard business card between the magnetto and flywheel.
That would be 0.010" but a business card will suffice as as a substitute, as a matchbook could, also.
0.010"
I believe its .020 with a magneto.
the correct gap is .30
You can set the gap on the ignition module if the flywheel's magnets are not close. The gap should be at least 0.010 to 0.012 from the flywheel.
Basically the magneto/coil pack is probably defective or the spark plug, pull the flywheel pull chord assembly and possible fuel tank assembly, the part is mounted on top of the engine below the rewind coil area....follow the spark plug wire backwards. Be sure to keep the spark plug disconnected while working on any magneto type engine, maintain the proper gap between the coil and the flywheel, for quick reference to gap use a match book cover.
.030