My chainsaw was fine just three weeks ago, but refuses to do anything now.
I've cleaned and reset the plug ( it was wet and carboned). I checked the
bore through the exhaust port - looks clean. unscored with top ring intact).
It feels like the compression is ok. My guess is the spark (or lack of it)
or the carb (but there seemed to be plenty of fuel on the plug. What is the
best way to test the spark without giving myself a shock? Any other ideas?
The machine is a Dynamac, about 9 years old from Machine Mart.

Thanks

Lawrence