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Discussion Starter · #1 ·
Need to check power output and hopefully timing coming from the magneto. Both plugs fire, but I think one of the plug wires may be delivering weak power or possibly a weird tiiming issue. There is a new coil with new wires, new plugs, compression good, reeds are new, no vacuum leaks, a different cdi.

Anyone know how to check power output from each plug wire? and also how to check tiiming?

Thanks, scott
 

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On top of the magneto cover is a threaded black plug inside that threaded plug hole you should notice a metal arrow. When you rotate the coupler until the mag cylinder is up as high as it can go then the arrow in the hole should be just a few degrees off of the “T” stamped onto the flywheel looking through the hole. I’m guessing you have the 640cc twin or 650 suzuki twin single carb.
 
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