Chainsaw Repair

That usually won't affect timing at all if it's screwed on in place. Spec clearance is .020 between the laminations on the coil to the flywheel magnets.

The only other issue I can possibly think of is that the saw may be flooding badly due to an unseated metering needle in the carb causing it to hydro lock.

The best way to test if that's the case is to pull the starter handle over several times with the on / off switch in the OFF position. If it does "kick back" with the ignition off, that's what may be happening.