i have a pro 42cccsa chain saw and when i try to start it,it kicks back at me as if the spark timing has sllpped (too far advanced)..how do i alter it.......
You cannot change the ignition timeing, this is set by the flywheel/crank and key, it may have part sheared the key, you can increase the air gap between the flywheel and ignition unit, this will retard it slightly, you should also consider a de coke, it may be well carboned on top of the piston.
ADW
October 2010
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix chainsaws.