GB
- 17 -
7. Working with the chainsaw
7.1 Preparations
To ensure that you can work safely, check the fol-
lowing points before every use:
Condition of the chain saw
Inspect the chainsaw before the start of work for
damage to the housing, the power cable, the saw
chain and the cutter rail. Never use a chainsaw
which is obviously damaged.
Oil container
Fill level of the oil container. Even while working,
keep checking that su
ffi
cient oil is in the system.
To avoid damaging the chainsaw, never run the
saw if there is no oil in the system or if the oil
drops below the “min” mark (Fig. 10/Item B).
On average, a single
fi
lling will last around 15
minutes depending on the number of pauses in
cutting and the loads involved.
Saw chain
Tension of the saw chain, condition of the cutting
elements. The sharper the chainsaw, the easier
and more controllable it is to operate the chain-
saw. The same also applies to the chain tension.
Again, while working also check the chain tension
every 10 minutes in order to increase your safety.
New saw chains in particular often tend to expand
more.
Chain brake
Check the operation of the chain brake as de-
scribed in the chapter “Safety devices” and then
release it.
Safety clothing
Always wear appropriate tight-
fi
tting safety
clothing like special trousers which protect
against cuts, protective gloves and safety shoes.
Hearing protection and protective goggles.
When felling trees or performing forest work, al-
ways wear a protective helmet with integral face
and hearing protection. This will o
ff
er protection
against falling branches and any branches if they
spring back.
7.2 Description of the correct procedures for
basic use of the chainsaw
Felling a tree (Figs. 14-17)
If two or more persons are working at the same
time on felling and cutting back then the minimum
distance between the tree being felled and the
tree being cut back should be at least twice the
height of the tree being felled (Fig. 14). When
felling trees, care must be taken to ensure that no
other persons are endangered, no power supply
lines are hit and no material damage is caused
to equipment or property. In the event that a tree
comes into contact with a power supply line, he
responsible power supply company should be
informed immediately.
When working with the saw on a slope, the opera-
tor of the chainsaw must be standing at a higher
point on the slope than the tree being felled, as
the tree will roll or slip downhill once it has been
felled (Fig. 15).
Before felling the tree you must
fi
rst plan and if
necessary clear an escape route. This escape
route must lead away diagonally in the opposite
direction to the expected fall direction – this can
be seen in Fig. 16 (A= danger zone, B= direction
of fall, C= escape zone).
Before felling the tree you must take into account
the natural inclination of the tree, the location of
larger branches and the wind direction, as this will
help you to correctly determine the direction in
which the tree will fall.
Dirt, stones, loose bark, nails, staples and wire
must be removed from the tree.
Making the felling notch (Fig. 17)
Cut a notch (A) at right angles to the fall direction
to a depth of 1/3 of the tree diameter as shown
in Fig. 17. First make the lower horizontal felling
notch (1). This prevents the saw chain or the gui-
de rail from becoming trapped when the second
felling notch is made.
Making the felling cut (Fig. 17)
The felling cut should be positioned at least 50
mm above the horizontal felling notch. Make the
felling cut (B) parallel to the horizontal felling
notch. The felling cut should be cut to a depth
which leaves a thin strip (felling hinge strip) (D)
which can act as a hinge. This strip prevents the
tree from rotating and falling in the wrong direc-
tion. Do not cut through the strip. When the felling
cut gets close to the strip the tree should start to
fall. If it becomes clear that the tree may well fall in
a di
ff
erent direction to the desired fall direction (C)
Anl_PXCCSS_0182U_SPK7.indb 17
Anl_PXCCSS_0182U_SPK7.indb 17
27.11.2019 14:48:14
27.11.2019 14:48:14
