Chainsaw Repair

Thks for the info. I'll try a hotter plug and see.

..seems backward not to tune the fuel to the plug.  with the automatic screwdriver carb, not much else you can do.

once you start getting a burn on the ground strap, think you maybe pretty close on heat range.  they say timing, is read on the strap.

...one ignition manufacturer listed their small engine ignitions as putting out a little less than 30 mJ of energy.
compared to a typical MSD ignition for a vehicle runs about 135 mJ.

suspect that this has a lot to do with timing on these small engines.