Kraissmann 4000 AKS 18Li Betriebsanleitung Seite 18

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 suffi cient oil is in the system. To avoid dam-
aging 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 ele-
ments. 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 described 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, protec-
tive gloves and safety shoes.
Hearing protection and protective goggles
When felling trees or performing forest work, always
wear a protective helmet with integral face and hearing
protection. This will off er protection against falling
branches and any branches if they spring back.
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 be-
tween 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 operator of
the chainsaw must be standing at a higher point on the
slope than the tree being felled, as the tree will roll or
18 | English
slip downhill once it has been felled (Fig. 15).
Before felling the tree you must first plan and if neces-
sary 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 nat-
ural inclination of the tree, the location of larger branches
and the wind direction, as this will help you to correctly de-
termine 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 guide 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 pre-
vents the tree from rotating and falling in the wrong
direction. 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 diff erent
direction to the desired fall direction (C) or it starts to
lean back and traps the saw chain, interrupt the felling
cut and insert wedges made of wood, plastic or aluminum
to open out the cut and control the lean of the tree until
it leans in the required direction.
When the tree starts to fall, remove the chainsaw from
the cut, switch it off , place it on the ground and exit the
danger zone via the planned escape route. Watch out for
falling branches and take care not to trip.
Removing branches
Here we are talking about removing branches from the
felled tree. When removing branches, leave any down-
ward facing branches which are supporting the tree until
the trunk of the tree has been cut up. Smaller branches
should be removed as shown in Fig. 18 (A= cutting direction
when removing branches, B= keep away from the ground!
Supporting branches should be left until the trunk is cut
up) in a single cut from the bottom to the top. Any branch-
es which are under tension should be cut from the bottom