No spark 7.5 hp -updated

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I got an 7.5 hp Mercury , just got it back from a friend .<br />Problem ,no spark ,did not start after break .Dos anybody have some check points for me , got a mutimeter an hopefully the skills .<br /><br />Engine #9262665 7.5 hp ,Thunderbolt ignition .What year ?<br /><br />Update:<br />Coils : across +/- 0 ohm , +or- to ground nothing ,<br />coil output to ground 960/979 ohm ( secondary )<br />Trigger ? brown to white 24 ohm , to ground - nothing .<br />Stator ? yellow to ground 1,747 Kohm<br /><br />Switch box P/N 339-6222A4<br /><br />Thanks