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Message: [QUOTE="steve.emma, post: 1232186, member: 36039"] the ignition setup on the mower engine is pretty basic. looks like a magnet set into a allow flywheel which then passes next to the coil centre to generate spark as it moves around. havent pulled the motor to pieces yet but maybe the flywheel could be offset on the crank somehow to change the timing? will have a better look when its apart. the info about snowmobiles and golf karts running their engines backwards to get a reverse gear is interesting. does that mean that their starter motors spin the engines in both directions as well? or do they have a extra gear on the starter for reverse direction (like a gearbox does)? i guess the issue of engine performance is not such a big deal in reverse for a golf kart in terms of ignition timing. [/QUOTE]