A chainsaw is a motorized tool that it used
to saw off a complete tree from its roots (buffer 10 to 11). Furthermore, it
can be used for delimbing (buffer 11 to 12) and to cross-cut trees into logs
(buffer 12 to 13).
The sawing movement is performed by a saw
chain, which runs over a chainsaw bar. Due to the motor of the chainsaw, the user
does not need to apply force for the movement of the saw itself. Therefore,
working with the chainsaw is by far easier than working with an axe or a hand
saw.
Since the chainsaw is mechanically driven but
must be held in position by a human being, the work with the chainsaw is
classified as motor-manual work.