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2. 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 the saw chain, stop cutting before the felling-
back cut is complete and use wedges of wood, plastic
or aluminium 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,
anf use the retreat path planned. Be alert for falling
overhead limbs and watch your footing.
Removing buttress roots
A buttress root is a large root extending from the trunk of
the tree above the ground. Remove large buttress roots
prior to felling. Make the horizontal cut into the buttress
first, followed by the vertical cut. Remove the resulting
loose section from the work area. Follow the correct
tree felling procedure after you have removed the large
buttress roots.
Limbing a tree
Limbing is removing the branches from a fallen tree.
Branches under tension should be cut from the bottom
up to avoid bindingthe chain saw.
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.
Follow the simple directions for easy cutting. When the
log is supported along its entire length, it is cut from the
top (overbuck).
When the log is supported on one end, cut 1/3 the
diameter from the underside (underbuck). Then make the
finished cut by overbucking to meet the first cut.
When the log is supported on both ends, cut 1/3 the
diameter from the top (overbuck). Then make the finished
cut by underbucking the lower 2/3 to meet the first cut.
When bucking on a slope always stand on the uphill side
of the log. To maintain control when "cutting through",
release the cutting pressure near the end of the cut
without relaxing your grip on the chain saw handles.
Don't let the chain contact the ground. After completing
the cut, wait for the saw chain to stop before you move
the chain saw. Always stop the motor before moving from
tree to tree.
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Cutting springpoles
A springpole is any log, branch, rooted stump, or sapling
which is bent under tension by other wood so that it
springs back if the wood holding it is cut or removed.
On a fallen tree, a rooted stump has a high potential of
springing back to the upright position during the bucking
cut to separate the log from the stump. Watch out for
springpoles—they are dangerous.
WARNING
Springpoles are dangerous and could strike the
operator, causing the operator to lose control of the
chain saw. This could result in severe or fatal injury
to the operator. This should be done by trained
users.
Additional safety warnings
Some regions have regulations that restrict the use of the
machine. Check with your local authority for advice.
Never allow children or people unfamiliar with the
instructions to use the machine. Local regulations may
restrict the age of the operator.
Ensure before each use that all controls and safety
devices function correctly. Do not use the machine if the
"off" switch does not stop the motor.
Do not wear loose fitting clothing, short trousers, or
jewellery of any kind.
Secure long hair so it is above shoulder level to prevent
entanglement in moving parts.
Beware of thrown, flying, or falling objects. Keep all
bystanders, children, and animals at least 15 m away from
the work area.
Do not operate in poor lighting. The operator requires a
clear view of the work area to identify potential hazards.
Use of hearing protection reduces the ability to hear
warnings (shouts or alarms). The operator must pay extra
attention to what is going on in the work area.
Operating similar tools nearby increases both the risk
of hearing injury and the potential for other persons to
enter your work area.
Keep firm footing and balance. Do not overreach.
Overreaching can result in loss of balance and can
increase the risk of kickback.
Keep all parts of your body away from any moving part.
Inspect the chain saw before each use. Check for correct
operation of all controls, including the chain brake. Check
for loose fasteners, make sure all guards and handles are
properly and securely attached. Replace any damaged
parts before use.
Do not modify the machine in any way or use parts
and accessories which are not recommended by the
manufacturer.
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