Kickback Information; To Use The Limbing Technique - Zenoah GZ381 Manual De Usuario

• To cut from below = To cut on the push stroke. This
means that the saw chain tries to push the product
against the operator.
WARNING:
cut with the top edge of the guide bar. If
the saw chain gets caught in the trunk,
the product can be pushed against you.
You must prevent this force or there is a
risk that the kickback area of the guide
bar touches the tree. This will lead to a
kickback.
(Fig. 52)
(Fig. 14)
• Cutting = General term for when you cut through
wood.
• Limbing = When you cut branches off a fallen tree.
• Splitting = When the object breaks off before your
cut is complete.

Kickback information

WARNING:
serious injury or death to the operator or
others. To decrease the risk you must know
the causes of kickback and how to prevent
them.
A kickback occurs when the kickback zone of the guide
bar touches an object. A kickback can occur suddenly
and with large force, which throws the product in the
direction of the operator.
(Fig. 53)
Kickback always occurs in the cutting plane of the guide
bar. Usually, the product is thrown against the operator
but can also move in a different direction. It is how you
use the product when the kickback occurs that causes
the direction of the movement.
(Fig. 54)
A smaller bar tip radius decreases the force of the
kickback.
Use a low kickback saw chain to decrease the effects of
kickback. Do not let the kickback zone touch an object.
WARNING:
prevents kickback. Always obey the
instructions.
To consider before making a cut
• Make sure to always use full throttle when cutting!
• Make sure to reduce the speed to idle after every
cut.
CAUTION:
too long at full throttle without any load,
for instance without any resistance from
26
Be careful when you
A kickback can cause
No saw chain fully
Running the engine for
the saw chain during cutting, can lead to
serious engine damage.
• Be careful so that the cutting equipment does not
jam in the cut. Two factors decide whether the saw
chain will jam or the object that you are cutting will
split: the first is how the object is supported before
and after cutting, and the second is whether it is in
tension. (Fig. 55)
WARNING:
the cut: Stop the engine! Don't try to pull
the chainsaw free. If you do you may be
injured by the saw chain when the
chainsaw suddenly breaks free. Use a
lever to open up the cut and free the
chainsaw.
• Make sure the object you are cutting will not split.
(Fig. 56)
• Make sure the saw chain will not strike the ground or
any other object during or after cutting. (Fig. 57)
• Consider whether there is a risk of kickback. (Fig.
58)
• Examine if the conditions and surrounding terrain
affect how safely you can stand and move about
safely. Check the area around you for possible
obstacles such as roots, rocks, branches, ditches
etcetera. Take great care when working on sloping
ground.
In most cases you can avoid problems by cutting in two
stages; from the top and from the bottom. You need to
support the object so that it will not trap the saw chain or
split during cutting.

To use the limbing technique

When limbing thick branches you should use the same
approach as for cutting.
1. Make sure that you can stand and move about
safely.
2. Cut difficult branches piece by piece. (Fig. 59)
WARNING:
removing small branches and avoid
cutting bushes, for instance when you
cut many small branches at the same
time. Small and light branches can be
grabbed by the saw chain and thrown
back at you. Even if this does not need
to be a danger, you may be surprised
and lose control of the chainsaw which
can cause serious injury.
3. Work on the left side of the trunk. Work as close as
possible to the chainsaw for maximum control. If
possible, let the weight of the chainsaw rest on the
trunk.
If the saw chain jams in
Take great care when
272 - 009 - 21.06.2021