4 cycle = intake, compression, power, exhaust. Intake,piston goes down. Compression,piston goes up. Power,piston goes down. Exhaust,piston goes up.
 
If it is an older engine with breaker points, every other crank rotation. I think the newer engines with electronic ignition fire on every rotation.
 
I think Jerry has it right. If it had points, every other revolution. If no points, then spark on every revolution.
 
The points on a K series Kohler run off a push rod on the camshaft. Camshafts rotate at 1/2 crank speed so I'm guessing it only fires on the compression/power stroke.
 
Some 4 strokes fire every revolution. Simplified ignition systems that as noted are flywheel magneto or Magnapulse with flywheel trigger have a "wasted" spark cycle- but don"t need a camshaft access hole in block for points pushrod or end of camshaft sticking out side for points mount. Tecumseh vertical shaft small 4 stroke engines used on lawnmowers for a few years had the same ignition coil, flywheel trigger as their 2 strokes, common parts saved money. Some cars have "wasted" spark also - think the GM dual plug wire coil packs for pairs of cylinders, sensor triggers off crankshaft and one cylinder fires on power stroke but other paired cylinder is firing on end of exhaust. engine doesn"t have a distributor so parts situation with computer sort of simplified. RN
 
Only by the spec. number of this particular engine can we tell whether this particular engine fires on every stroke or every other stroke. Being a K341 doesn't tell us enough. I think they were built for nearly 20 years. Maybe longer.

No one has told us if this partucular engine uses points, coil, magneto, etc. The spec number would tell us how it was originally equipped.
 
Does it have points in a little rectangular can on the side of the block. If so, it only fires once every two rotations.
 
Guys, if it's a K341 then it's a four-stroke with battery and coil ignitionand spark every other revolutioin. If it has electronic ignition, it's an M-18 and there's a spark each revolution but then it's not a K-341.
 
If the points are driven off the crankshaft it fires every revolution, if off the camshaft then every other. If the first case is true, it just also fires during the exhaust stroke. I have a K301 and can look.
 

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