MS 310 Coil Wiring Help ?

jpsbgt

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Hello this is my first post. My MS 310 has a wiring issue that I can’t fix. I have tried to find a schematic detailing the simple wire harness with little luck. Any chance one of you could explain the wiring layout. The wire going to the ground point on the coil broke off so I ran another wire from it to the metal dogs up front. I would like to trace the wire but I believe I would need to dismantle the entire saw ? Any suggestions would be appreciated.
 
Photos will help- but the ground is a T27 screw located on the flywheel side of the cylinder- just to the front of and slightly above the coil- should be a wire with a ring terminal from the coil and another going away to the metal section of the master control switch.
 
Thanks for your help ! Can you access the ground point on cylinder without tearing the saw apart ?
 
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