I started my small engine career in a Stihl shop in the mid 70's. The 041 Farm Boss was my favorite model, easy to work on and lots of grunt. Too dang heavy for this old back now.

It took a coupla fit and trys, but all that was was wrong was that who ever replaced the starter cord didn't tension the recoil spring enough. Once I cleared out the cylinder, and tested for spark, it lit off. The recoil is easier to work on than a B+S recoil. I wound up the spring and held the pulley with a pair of vise grips clamp on the shaft. The FB is a beast. About 15 yrs ago, I started to run just a tank of gas at a time, then quit for the day. The idle is kinda bad, but I think a carb cleaning will sort it out.

Trimmed an azalea bush with it just now. Started on the second pull and idles fine. Just likes to be run a little. :)