24
Underside of wood under tensile stress
Place one cut (one third of the diameter of the trunk) from
top to bottom.
Then place a second cut on the same point from bottom
which cuts through the trunk.
Strong trunks and strong tension
Place one cut (one third of the diameter of the trunk) from
buttom up.
Then place a second cut with distance to the first cut from
top which cuts through the trunk.
Cutting off of perches
For horizontal branches without being top heavy
The branch section falls down in a controlled manner without
tipping over.
Set the first cut from below, approx. one third of the
branch diameter.
The second cut is made on the same level as the first cut
or moved further toward the inside (negative breaking
step).
Remove the remaining branch section.
Additional advices for chopping down trees
Such works shall only be carried out by instructed
specialists.
Pay attention to the length of the guide bar. Only those trees
are allowed to be cut which have a trunk diameter which is
smaller than the length of the guide bar.
Safeguard the dangerous zone (D) before cutting.
Make sure that there are no persons or animals in the fall
area. Danger to life!
Make sure that the working area around the trunk is
free of risk to stumble and that you have an escape route (F)
which is free of obstacles.
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Before cutting the tree down decide on the felling
direction (C). Before chopping the tree decide on the
chopping direction. Consider in this case the balance point of
the treetop, neighbour trees, slope direction, state of health
of the tree and the wind direction. On this side the kerf is cut
in.
Remove interfering branches, scrub and obstacles from the
working area at the trunk and make sure that you have a
safe standing position.
Thoroughly clean the trunk foot – sand, stones and other
foreign objects make the saw chain edgeless or may
damage it.
Consider the state of health of the tree – be careful with
trunks with damages or deadwood (droughty, rotten or dead
wood).
Chopping a tree
Cut a kerf with the saw of approximately one third of the tree
diameter into the trunk. First of all place the horizontal cut
and then as secondly a cut from top in an angle of 45°.
Shout the warning "Caution" or "Tree is falling"
before
starting the fell cut.
Now saw on the opposite side of the trunk a horizontal
chopping cut.
This cut should be placed a bit higher (appr. 4
cm) than the horizontal cut of the kerf.
By no means cut through the trunk.
Appr. 1/10 of the trunk
diameter must remain.
If the tree starts falling ahead of time
pull out the chain saw immediately out of the cut and step
back or to the side.
Push a key into the horizontal chopping cut in order to make
the tree falling.
Pay attention, when tree starts falling, to perches or twigs
falling down.
Maintenance and cleaning
Before each maintenance and cleaning work
switch off device
Wait for standstill of the power pruner
Remove the battery
Further maintenance and cleaning works than described in this
chapter shall only be carried out by the manufacturer or
companies named by the manufacturer.
For maintaining and cleaning, removed security devices must
unconditionally be mounted properly and proved again.
Use only original parts. Other parts can result in unexpected
damages and injuries. The manufacturer is not liable for any
damage or injury resulting from such action.
Maintenance
In order to avoid possible injuries wear gloves.
To guarantee a long and reliable usage of the chain saw carry
out the following maintenance works regularly.
Check the chain saw for
loose or damaged saw chain
wear, especially chain, guide bar and chain wheel
worn or damaged components
correct assembly and faultless covers and protective
devices.
Necessary repair works or maintenance have to be carried out
before using the power pruner.
Saw chain and guide bar
Saw chain and guide bar are exposed to a great extent
of wearing. Replace the saw chain and the guide bar
without any delay if their proper function is no longer
ensured.
“
Installing the guide bar and the saw chain
”
.
Sharpening of saw chain
You can only work safely and well with a sharp
and clean saw chain. Damaged or incorrectly
sharpened saw chains increase the risk of
kickbacks.
