Ikra IPCS 5245 - Instructions Concerning the Proper Techniques for Basic Felling, Limbing and Cross-Cutting

44
Muer
The silencer is designed to reduce the noise level as much
as possible and to keep the exhaust gases of the engine
away from the user
WARNING
The muer is very hot during operation and even after
switching o. This also applies to idling. Be aware of the
re hazard, especially if ammable substances and/or
gases are in the vicinity.
WARNING
Never use chainsaws without a muer or with a defective
muer. A defective silencer can signicantly increase
the noise level and re hazard. Always have re-ghting
equipment within reach Never use chainsaws without or
with a defective spark arrestor net if the net is mandatory
in your work area.
WARNING
The muer contains chemicals that may be carcinogenic.
If the muer is damaged, avoid coming into contact with
these substances.
WARNING
Risk of injury from running saw chain.
• Keep hands away.
Never use the machine with a damaged guard.
Before carrying out any adjustment, cleaning or
maintenance work on the appliance, switch it o.
Wait until all rotating parts have come to a standstill
and the appliance has cooled down.
Check the work area before using the appliance.
Remove any hard objects such as stones, shards of glass,
wires, etc. that could be thrown o, knocked back or that
could otherwise cause injury or damage during appliance
operation.
Never use the appliance when the proper equipment
is not tted.
The appliance must not be used if damaged or safety
equipment is defective. Replace any worn-out and
damaged parts.
Instructions concerning the proper
techniques for basic felling, limbing
and cross-cutting
WARNING
The inhalation of engine exhaust fumes, chain oil mist
and dust from sawdust over a long over a long period of
time can be a health.
Understanding the forces within the
wood
When you understand the directional pressures and
stresses inside the wood you can reduce the “pinches” or
at least expect them during your cutting. Tension in the
wood means the bers are being pulled apart and if you
cut in this area, the “kerf” or cut will tend to open as the
saw goes through. If a log is being supported on a saw
horse and the end is hanging unsupported over the end,
tension is created on the upper surface due to the weight
of the overhanging log stretching the bers. Likewise, the
underside of the log will be in compression and the bers
are being pushed together. If a cut is made in this area,
the kerf will have the tendency to close up during the cut.
This would pinch the blade.
Felling a tree
When bucking and felling operations are being
performed by two or more persons at the same time, the
felling operations should be separated from the bucking
operation by a distance of at least twice the height of the
tree being felled.
Trees should not be felled in a manner that would
endanger any person, strike any utility line, or cause any
property damage.
If the tree does make contact with any utility line, the
company should be notied immediately.
An escape path should be planned and cleared as
necessary before cuts are started. The escape path should
extend back and diagonally to the rear of the expected
line of fall.
Before felling starts, consider the natural lean of the tree,
the location of larger branches, and the wind direction to
judge which way the tree will fall.
Remove dirt, stones, loose bark, nails, staples, and wire
from the tree.
Do not attempt to fell trees which are rotten or have been
damaged by wind, re, lightning, etc. This is extremely
dangerous and should only be completed by professional
tree surgeons.
Notching undercut
Make the notch 1/3 the diameter of the tree,
perpendicular to the direction of the fall. Make the lower
horizontal notching cut rst. This will help to avoid
pinching either the saw chain or the guide bar when the
second notch is being made.
Felling-back cut
Make the felling-back cut at least 50 mm/ 2 in. higher
than the horizontal notching cut. Keep the felling-back
cut parallel to the horizontal notching cut. Make the
felling back cut so enough wood is left to act as a hinge.
The hinge wood keeps the tree from twisting and falling
in the wrong direction.
Do not cut through the hinge.
As the felling gets close to the hinge, the tree should
begin to fall. If there is any chance that the tree may not
fall in the desired direction or it may rock back and bind
GB
ENGLISH