This saw holds a place in my heart as it was the first saw I ever bought for myself. Barely in my teens and bought it used from a local saw shop...
Then you would have not fixed the problem. It WAS ignition with weak, intermittent spark. What looked okay upon initial look see was not strong...
It's a replacement coil, not OEM Stihl. I got it from Lil Red Barn Here's a link to the site: http://www.lilredbarn.net/Default.asp REALLY easy...