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Sparks per revolution?

Ralph Wiggum

By Ralph Wiggum
in Boats & Motors.

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Ralph Wiggum Grand Master

Ralph Wiggum

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Set the pole setting to 12 on the back of the tach

Thanks, but that doesn't help. This is a Tiny Tach TT2A. This is the chart in the manual:

45° = 8 sparks per revolution

60° = 6 sparks per revolution

90° = 4 sparks per revolution

120° = 3 sparks per revolution

180° = 2 sparks per revolution

360° = 1 spark per revolution

720° = 1 spark per 2 revolution

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Ralph Wiggum Grand Master

Ralph Wiggum

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It is a 3 cylinder two stroke, wouldn't that be 3 per revolution? As I read the shop manual there are 3 pickup coils and one magnet in the flywheel to trigger the sparks. So I vote for 3 sparks per revolution.

That makes sense. I guess worst-case is I mess around with it till it seems right smile

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