I had a friend who used to work for a company that rented out chainsaws and similar dangerous equipment. They didn't bother with a disclaimer or making the people who hire out the equipment sign a waver 'cuz if they did it was admission that the products they where offering where dangerous! I mean really! COME ON! It's a fucking CHAINSAW! If you put it against your arm while it's on your ARM WILL FALL OFF! What the hell do you think is gonna happen?