Poulan Pro 220 LE Instruction Manual page 11

• Squeeze the throttle trigger and a llow
the engine toreach full s peed before
cutting,
• Begin c utting with thesawframe
against the log,
• Keep the engine atfull speed the entire
time y ou are cutting.
• Allowthechaintocutforyou. Exertonly
light downward pressure, Ifyou force
the c ut, damage to the bar, chain, or e n-
gine c an result.
• Release the throttle trigger as soon as
the cut i scompleted, allowing the en-
gine t oidle. I fyou run the saw atfull
throttle without acutting load, unneces-
sary w ear can occur tothe chain, bar,
and e ngine,
It is recommended that
the engine not be operated for lon-
ger than 30 seconds at full throttle.
• To avoid losing control when cut is com-
plete, do not put pressure on saw at end
of cut.
• Stop the engine before setting the saw
down after cutting,
TREE FELLING TECHNIQUES
_WARNING:
Check for broken or
dead branches which can fall while cutting
causing serious injury, Do not cut near build-
ings or electrical wires if you do not know the
direction of tree fall, nor cut at night since you
will net be ale to see well, nor during bad
weather such as rain, snow, or strong winds,
etc. if the tree makes contact with any utility
line, the utility company should be notified
immediately.
• Carefully plan your sawing operation in ad-
vance.
• Clearthework area, You needa clear area
all around the tree so you can have secure
footing.
• Study the natural conditions that can cause
the tree to fall in a particular direction,
Natural conditions that can cause a tree to
fall in a particular direction include:
• The wind direction and speed.
• The lean of the tree. The lean of a tree
might net be apparent due to uneven or
sloping terrain, Use a plumb or level to de-
termine the direction of tree lean.
• Weight and branches on one side.
• Surrounding trees and obstacles.
Look for decay and rot, if the trunk is rotted, it
can snap and fall toward the operator. Check
for broken or dead branches which can fall on
you while cutting,
Make sure there is enough room for the tree to
fall, Maintain a distance of 2-I/2 tree lengths
from the nearest person or other objects. En-
gine noise can drown out a warning call.
Remove dirt, stones, loose bark, nails, staples,
and wire from the tree where cuts are to be
made,
Plan a clear retreat path to the rear and diag-
onal to the line of fall.
_ Plan a clear retreat path
%
(}-._m_. Direction of Fall
45 ° /
"_/" e¢
FELLING LARGE TREES
(6 inches (15 cm) in diameter or larger)
The notch method is used to fell large trees.
A notch is cut on the side of the tree in the de-
sired direction of fall. After a felling cut is
made on the opposite side of tree, the tree
will tend to fail into the notch.
NOTE: if the tree has large buttress roots,
remove them before making the notch, Ifus-
ing saw to remove buttress roots, keep saw
chain from contacting ground to prevent dull-
ing of the chain.
NOTCH CUT AND FELLING THE
TREE
• Make notch cut by cutting the top of the
notch first. Cut through 1/3 of the diameter
of the tree. Next complete the notch by cut-
ting the bottom of the notch, See illustra-
tion. Once the notch is cut remove the
notch of wood from the tree.
Final (felling) cut here, 2 inches
(5 cm) above center of notch.
First cut ] ,z_; 1 /
=÷ I/
Notet_ __- _ ......... - 2"
• After removing the cutout of wood, make
the felling cut on the opposite side of the
notch. This is done by making a cut about
two inches (5 cm) higher than the center of
the notch. This will leave enough uncut
wood between the felling cut and the notch
to form a hinge, This hinge will help pre-
vent the tree from falling in the wrong direc-
tion.
Hinge holds tree on stump and helps
control fall
Opening
of felling
/
Closing of
notch
11