Safety Devices On Your Chain Brake; Instructions On Working Properly With The Chainsaw - IKRA Oregon IECS 1835 Instrucciones De Manejo

Safety devices on your chain brake

1. Chain brake (Fig. 9)
This chain saw is equipped with a mechanical brake for
the chain. In the case of uncontrolled movements, when
the tip of the sax blade gets in contact with wood or a
solid object, the drive of the chain is immediately stopped
by activation of the hand guard (4), the motor will not
be stopped. This brake function is initiated by the back
of your hand on the front handle (2) pushing the hand
guard. The proper function of the saw chain brake shall
be checked before each use of the saw.
CAUTION: No buttons should be pressed when
the chain brake is released (hand protection
pulled back in the direction of the handle and
locked)
Always ensure before starting the chainsaw that the
hand protection 4 is locked in the operating position.
To do this, pull back the hand protection in the di-
rection of the handle.
2. Rundown brake
In accordance with the latest regulations, this chain saw
is equipped with a mechanical rundown brake. This brake
is connected to the chain brake and stops the running
chain after the chain saw has been switched off.
It is activated by releasing the ON/OFF switch. The rundown
brake avoids injuries through the coasting of the chain.
3. Chain catch bolt (Fig. 10)
This chainsaw is fitted with a chain catch bolt (17). If the
chain breaks when the saw is in operation, the chain bolt
will catch the loose chain end and thus prevent injury to
the operator's hand.
Instructions on working properly with the
chain saw
(Fig. 11 - 18)
CAUTION!
Only saw logs with a diameter less than the saw's
cutting length. Lay people and home users may not
use the plunge cut process to saw and fell trees, as
this causes a kickback on the chain saw and can
therefore result in severe injuries and even death in
certain circumstances.
Always hold the saw with both hands; observe the
safety instructions and figure 7.
Important instructions for cutting and lopping: When
sawing on a slope, always stand uphill from the log
as the log can roll away!
a) Felling a Tree
When bucking and felling operations are being performed
by two or more persons, at the same time, the felling op-
eration should be separated from the bucking operation
by a distance of at least twice the height of the tree being
felled. Trees should be felled in a manner that would en-
danger any person, strike any utility line, the utility com-
pany should be notified immediately.
The chain saw operator should keep on the uphill side
of the terrain as the tree is likely to roll or slide downhill
after it is felled.
GB | Operating Instructions
A retreat path should be planned and cleared as neces-
sary before cuts are started. The retreat path should ex-
tend back and diagonally to the rear of the expected line
of fall as illustrated in Figure 11.
Before felling is started, consider the natural lean of the
tree, the location of larger branches and the wind direc-
tion to judge which way the tree will fall.
Remove dirt, stones, loose bark, nails, staples, and wire
from the tree where felling cuts are to be made.
b) Notching Undercut
Make the notch 1/3 the diameter of the tree, perpendic-
ular to the direction of fall as illustrated in 12. Make the
lower horiziontal notching cut first. This will help to avoid
pinching of either the saw chain or the guide bar when the
second notch is being made.
c) Felling Back Cut
Make the felling back cut at least 2 inches (50 mm) higher
than the horizontal notching cut as illustrated in Figure
12. 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 cut 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
the saw chain, stop cutting before the felling back cut is
complete and use wedges of wood, plastic or aluminum
to open the cut and drop the tree along the desired line
of fall.
When the tree begins to fall remove the chain saw from
the cut, stop the motor, put the chain saw down, then
use the retreat path planned. Be alert for overhead limbs
falling and watch your footing.
d) Limbing a Tree
Limbing is removing the branches from a fallen tree.
When limbing, leave larger lower limbs to support the
log off the ground. Remove the small limbs in one cut as
illustrated in Figure 13. Branches under tension should
be cut from the bottom up to avoid binding the chain saw.
e) Bucking a Log
Bucking is cutting a log into lengths. It is important to
make sure your footing is firm and your weight is evenly
distributed on both feet. When possible, the log should be
raised and supported by the use of limbs, logs or chocks.
Log resting completely on its side
When the log is supported along its entire length as
illustrated in Figure 14, it is cut from the top (over-buck).
Log resting on one side
When the log is supported on one end, as illustrated in
Figure 15, cut 1/3 the diameter from the underside (un-
derbuck). Then make the finished cut by overbucking to
meet the first cut.
Log resting on both sides
When the log is supported on both ends, as illustrated in
Figure 16, cut 1/3 of that diameter from the top overbruck.
Then make the finished cut by underbucking to meet the
first cut.
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