Scheppach MFH3300-4P Originalanleitung Seite 32

Working with pole saw
Precautions for Saw procedure
Never stand under the branch you want to saw. Use
special caution when working with branches under
tension and splintering wood. Possible risk of injury
caused by falling branches and catapulting pieces of
wood. In general, it is recommended to set the pruning
saw at an angle of 60 ° to the road.
Keep both hands well with the device during the cutting
process and pay you up to an equilibrium position and a
good level.
• Never try to use your tool with one hand. The loss
of control of your tool can cause serious injury or
death. Never work on a ladder, a tree branch or other
unstable surfaces.
• Never cut with the upper edge or the tip of the cutter
bar.
• Make sure that the chain tension is always correctly
adjusted.
• Practice for guiding the device slight pressure, but you
do not overload the motor.
Clear the work area before cutting interfering branches
and undergrowth. Then you create a retreat area,
far from the spot where the cut branches fall on, and
remove any obstacles there. Keep the work area clean,
remove the cut branches immediately. Pay attention to
your point, wind direction and the possible direction of
fall of the branches. Be prepared that fallen branches
can strike back. Place all other tools and equipment at a
safe distance from the branches to be cut, but not in the
retreat area.
Always observe the condition of the tree.
Look for rot and decay in the roots and branches. If
they are rotten inside, they can break off and fall down
unexpectedly during cutting.
You could also attend by fractured and dead branches
out, which is solved by the shake and fall on you. For
very thick or heavy branches you first make a small
incision below the branch before you work from the top
down to avoid chipping.
Basic cutting technique
Heavy branches break off easily when sawing. They tear
long strips of bark away from the trunk, which damages
the tree sustainably. The following section technique can
significantly reduce this risk:
• Saw the first branch about 10 cm from the trunk.
• Put in about 15 cm from the base of the top of a further
section.
• Saw until the branch breaks. The risk of injury on the
trunk is no.
• Finally, remove with a clean cut from the top of the
trunk along the remaining.
• Thus, the damage to the tree are kept as low as
possible, we recommend the interface additionally to
seal with grafting wax.
32 GB
Hazards by reactive forces
Reactive forces occur during operation of the saw chain.
The forces which are applied to the wood are against
the operator. They occur when the moving chain comes
into contact with a fixed object such as a branch or is
pinched. These forces can lead to a loss of control and
injury.
Understanding the origin of these forces can help you
to avoid the scare and the loss of control. This saw is
designed to make the return effects are not as noticeable
as with traditional chainsaws.
Always still keep a firm grip and a good level to maintain
control of the tool in doubt.
The most common effects are:
• setback
• recoil,
• retreat
Kickback
The setback can occur when the moving saw chain
meets at the upper quarter of the guide rail on a solid
object or is pinched.
The cutting force exerted on the chain from the saw, a
rotational force in the opposite direction to the chain travel.
This leads to an upward movement of the guide rail.
Avoid kickback
The best protection is to avoid situations that lead to
setbacks.
1. Keep the position of the upper guide rail always in
mind.
2. Leave this place never come into contact with an
object. Cut anything with it. Be especially careful near
wire fences and cutting small, hard knots, in which the
chain can easily pinch.
3. Cut only one branch at a time.
Withdrawal
The withdrawal occurs when the chain on the underside
of the bar suddenly stuck because it is jammed or
encounters a foreign object in the wood. The chain then
pulls the saw forward. The withdrawal often happens
when the chain is not running at full speed when in
contact with the wood.
Avoid withdrawal
Be aware of the forces and situations that can lead to
jamming of the chain on the underside of
the bar.
Always start with running at full speed chain to cut.
Recoil
The recoil occurs when the chain on top of rail suddenly
stuck because it is jammed or encounters a foreign
object in the wood. The chain can jerkily hold the saw
against the operator. Rebounds happen often if the top
rail is used for cutting.
Avoid recoil
Be aware of the forces and situations that can lead to
jamming of the chain on top of rail.