after working for about 6 years (during my university education) at a wood yard/ tree surgeons (part time) i grw quite a working relationship with a variety of sizes of chain saw (from massive 2-man beasts, to the smallest light-weight tree surgery saw).
You learn ALOT of respect for these machines VERY quickly, and personally i think its a complete shambles that ANYONE can go and by a chainsaw off the shelf and use it (without any training).... anyhow
the majority of chainsaw acidents are caused by
1) incorrect tool for the job, u should NEVER overwork a saw.... if you start to really labour the engine, then your looking for trouble. You will start to put more downwards pressure on the saw, and it could all end horribly wrong!
2) blunt saw, believe it or not a blunt chainsaw is FAR more dangerous than a sharp saw. A shape saw will effotlessly slice through your timber, where-as a blunt saw requires more physical effot, which again can cause dangerous situations (such as kick back, or chain breakage)
3) incorrect use, if you don`t know what your up to......... get HELP, is it really worth loosing a hand or arm over?
just remember..... chainsaw don`t cut, they RIP chuncks of wood from the timber you`re cutting. Chainsaws are excellent at removing flesh VERY quickly, and at the moment medical science can`t replace flesh!
I`ve seen some nasty accidents, and a few near-misses. I sometimes shudder to think of what some must get upto with chainsaws!