PrimAster PMAS 750, Руководство по эксплуатации

Страница: 45 / 52

GB | Operating Instructions
10
be mindful of splintering wood.
• Possible risk of injury due to falling branches and
flying wood scrap!
• If the machine is being operated, keep people and
animals out of the danger area.
• The device is not protected against electrical shocks
in case of contact with high-voltage lines. Maintain a
minimum safety distance of 10 m away from electrical
lines. Mortal danger due to electrical shock!
• On a slope, always stand above or two the side of the
branch to be sawed.
• Hold the device as close as possible to your body.
This provides you the best balance.
• Do not use the pole-mounted pruner to cut branches
that possess a diameter thicker than the chain blade.
Sawing techniques
• During branch removal, hold the device at an angle of
maximum 60° to the horizontal to ensure that you are
not hit by a falling branch.
• Saw off the lowest branches on the tree first. This
makes it easier for cut branches to fall down.
• After completing the cut, the weight of the saw in-
creases for the operator abruptly, since the saw is
no longer supported by the branch. There is a risk of
losing control of the saw.
• Only pull the saw out of the cut while the saw chain is
running. This prevents gripping.
• Do not saw with the tip of the saw.
• Do not saw into the bulging base of the branch. The
prevents the tree from healing wounds.
Sawing off smaller branches (Fig.15)
Place the stop face of the saw on the branch. This pre-
vents fitful movements of the saw at the beginning of the
cut. Applying light pressure, guide the saw through the
branch from top to bottom.
Sawing off larger and longer branches (Fig.16)
Make a relief cut when sawing larger branches.
a) First saw through 1/3 of the branch diameter from
bottom to top using the top side of the guide bar.
b) Then saw from top to bottom to the first cut using the
bottom side of the guide bar.
c) Saw off longer branches in sections in order to main -
tain control over the location of impact.
Kickback
The term kickback refers to when the chainsaw suddenly
jumps up and back. This is usually caused by the work-
piece coming into contact with the guide bar tip or the
clamping of the saw chain.
A kickback generates abrupt, powerful forces. Therefore,
the chainsaw usually reacts in an uncontrolled manner.
The consequence is often the severe injury of the user
or nearby persons.
The danger of a kickback is greatest if you apply the area
near the guide bar tip to a branch, because the leverage
effect is greatest there. Therefore, always apply the saw
as flatly as possible.
Attention!
• Always make sure that the chain tension is correct!
• Only use properly functioning chainsaws!
• Only work with a saw chain sharpened according to
regulations!
• Never saw with the upper edge or tip of the guide bar!
•
Always hold the chainsaw firmly with two hands!
Sawing wood under tension
Sawing wood which is under tension necessitates ele-
vated caution! Wood that is under tension and is then
released from that tension when cut occasionally reacts
in a completely uncontrolled manner. This can result in
severe to deadly injuries. Such work may only be per-
formed by trained specialists.