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3. One-hand use of the chain-saw
Operators should not use tree service chain-saws one-handed when work position is unstable
or in preference to a handsaw when cutting small diameter wood at the branch tips.
Tree service chain-saws should only be used one-handed where
operators cannot gain a work position enabling two-handed use, and
they need to support their working position with one hand, and
the saw is being used at full stretch, at right angles to and out of line with the operator's
body.
Example of one-handed chain-saw use
Operators should never
cut with the kickback zone at the tip of the chain-saw guide bar,
"hold and cut" sections, or
attempt to catch falling sections.
4. Freeing a trapped saw
It the saw become trapped during cutting, operators should
switch off the saw and attach it securely to the tree inboard (i.e. towards the trunk side)
of the cut or to a separate tool line,
pull the saw from the kerf whilst lifting the branch as necessary,
if necessary, use a handsaw or second chain saw to release the trapped saw by cutting a
minimum of 30 cm away from the trapped saw.
Whether a handsaw or a chain-saw is used to free a trapped saw, the release cuts should
always be outboard (toward the tips of the branch), in order to prevent the saw being taken
with the section and further complicating the situation.
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