If you don't have the 3.3 beta these mods won't work...
realchainsaw.tbm
realchainsaw2.tbm
The white blocks at the end spin really fast.
Sometimes the spinning of the saw rotates your body, to stop this, try extending or holding the right arm joints.
realchainsaw.tbm
default settings
realchainsaw2.tbm
settings in mod
download them from box cuz my attachments are full..