Husqvarna 445 EPA II ユーザーズマニュアル
English
– 23
WORKING TECHNIQUES
General rules
1
If you understand what kickback is and how it happens
then you can reduce or eliminate the element of surprise.
By being prepared you reduce the risk. Kickback is usually
quite mild, but it can sometimes be very sudden and
violent.
then you can reduce or eliminate the element of surprise.
By being prepared you reduce the risk. Kickback is usually
quite mild, but it can sometimes be very sudden and
violent.
2
Always hold the chain saw firmly with your right hand on
the rear handle and your left hand on the front handle.
Wrap your fingers and thumbs around the handles. You
should use this grip whether you are right-handed or left-
handed. This grip minimizes the effect of kickback and lets
you keep the chain saw under control. Do not let go of
the handles!
the rear handle and your left hand on the front handle.
Wrap your fingers and thumbs around the handles. You
should use this grip whether you are right-handed or left-
handed. This grip minimizes the effect of kickback and lets
you keep the chain saw under control. Do not let go of
the handles!
3
Most kickback accidents happen during limbing. Make
sure you are standing firmly and that there is nothing in
the way that might make you trip or lose your balance.
sure you are standing firmly and that there is nothing in
the way that might make you trip or lose your balance.
Lack of concentration can lead to kickback if the kickback
zone of the bar accidentally touches a branch, nearby tree
or some other object.
zone of the bar accidentally touches a branch, nearby tree
or some other object.
Have control over the workpiece. If the pieces you intend
to cut are small and light, they can jam in the saw chain
and be thrown towards you. Even if this does not need to
be a danger, you may be surprised and lose control of the
saw. Never saw stacked logs or branches without first
separating them. Only saw one log or one piece at a time.
Remove the cut pieces to keep your working area safe.
to cut are small and light, they can jam in the saw chain
and be thrown towards you. Even if this does not need to
be a danger, you may be surprised and lose control of the
saw. Never saw stacked logs or branches without first
separating them. Only saw one log or one piece at a time.
Remove the cut pieces to keep your working area safe.
4
Never use the chain saw above shoulder height and
avoid cutting with the tip of the bar. Never use the
chain saw one-handed!
avoid cutting with the tip of the bar. Never use the
chain saw one-handed!
5
In order to keep control of your saw, always maintain a firm
foothold. Never work on a ladder, in a tree or on any other
insecure support.
foothold. Never work on a ladder, in a tree or on any other
insecure support.
6
Always use a fast cutting speed, i.e. full throttle.
7
Take great care when you cut with the top edge of the bar,
i.e. when cutting from the underside of the object. This is
known as cutting with a pushing chain. The chain tries to
push the chain saw back towards the user. If the saw chain
is jamming, the saw may be pushed back at you.
i.e. when cutting from the underside of the object. This is
known as cutting with a pushing chain. The chain tries to
push the chain saw back towards the user. If the saw chain
is jamming, the saw may be pushed back at you.
8
Unless the user resists this pushing force there is a risk
that the chain saw will move so far backwards that only the
kickback zone of the bar is in contact with the tree, which
can lead to a kickback.
that the chain saw will move so far backwards that only the
kickback zone of the bar is in contact with the tree, which
can lead to a kickback.
Cutting with the bottom edge of the bar, i.e. from the top of
the object downwards, is known as cutting with a pulling
chain. In this case the chain saw pulls itself towards the
tree and the front edge of the chain saw body rests
naturally on the trunk when cutting. Cutting with a pulling
chain gives the operator better control over the chain saw
and the position of the kickback zone.
the object downwards, is known as cutting with a pulling
chain. In this case the chain saw pulls itself towards the
tree and the front edge of the chain saw body rests
naturally on the trunk when cutting. Cutting with a pulling
chain gives the operator better control over the chain saw
and the position of the kickback zone.
9
Follow the instructions on sharpening and maintaining
your bar and chain. When you replace the bar and chain
use only combinations that are recommended by us. See
instructions under the headings Cutting equipment and
Technical data.
your bar and chain. When you replace the bar and chain
use only combinations that are recommended by us. See
instructions under the headings Cutting equipment and
Technical data.