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86 Yamaha 25
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<blockquote data-quote="wmk0002" data-source="post: 484618" data-attributes="member: 13975"><p>FWIW, I learned these ignition systems use a wasted spark so both plugs fire at both their respective TDC and BTC. So if you hook up an inductive tach keep that in mind as it will show double rpms at the the standard 2 stroke setting.</p></blockquote><p></p>
[QUOTE="wmk0002, post: 484618, member: 13975"] FWIW, I learned these ignition systems use a wasted spark so both plugs fire at both their respective TDC and BTC. So if you hook up an inductive tach keep that in mind as it will show double rpms at the the standard 2 stroke setting. [/QUOTE]
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