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6.4 To stop engine
1. Release trigger and allow engine to return to
idle speed.
2. Move STOP switch down to stop engine.
Note: To stop the engine in an emergency, activa-
te the chain brake and switch the ON/OFF switch
to "Stop (0)".
6.5 General cutting instructions
Danger: Felling trees is prohibited without the
necessary training!
Felling
•
Felling is the term for cutting down a tree.
Small trees up to 6-7 inches (15-18cm) in
diameter are usually cut in a single cut. Larger
trees require notch cuts. Notch cuts determi-
ne the direction the tree will fall.
•
A retreat path (A) should be planned and
cleared as necessary before cuts are started.
The retreat path should extend back and dia-
gonally to the rear of the expected line of fall,
as illustrated in Fig. 8.
•
If felling a tree on sloping ground, 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.
•
Direction of fall (B) is controlled by the not-
ching cut. Before any cuts are made, consider
the location of larger branches and natural
lean of the tree to determine the way the tree
will fall (Fig. 8).
•
Do not cut down a tree during high or chan-
ging winds or if there is a danger to property.
Consult a tree professional. Do not cut down
a tree if there is a danger of striking utility wi-
res; notify the utility company before making
any cuts.
General guidelines for felling trees (Fig. 9)
Normally felling consists of 2 main cutting opera-
tions, notching (C) and making the felling cut (D).
•
Start making the upper notch cut (C) on the
side of the tree facing the felling direction (E).
Be sure you don t make the lower cut too
deep into the trunk. The notch (C) should be
deep enough to create a hinge (F) of suffici-
ent width and strength. The notch should be
wide enough to direct the fall of the tree for as
long as possible.
•
Never walk in front of a tree that has been
notched. Make the felling cut (D) from the
other side of the tree and 1.5 - 2.0 inches
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(3-5 cm) above the edge of the notch (C).
Never saw completely through the trunk.
Always leave a hinge. The hinge guides (F)
the tree. If the trunk is completely cut through,
control over the felling direction is lost. In-
sert a wedge or felling lever in the cut well
before the tree becomes unstable and starts
to move. This will prevent the guidebar from
binding in the felling cut if you have misjudged
the falling direction. Make sure no bystanders
have entered the range of the falling tree be-
fore you push it over.
•
Before making the final cut, always recheck
the area for bystanders, animals or obstac-
les.
Felling cut
•
Use wooden or plastic wedges (A) to pre-
vent binding the bar or chain (B) in the cut.
Wedges also control felling (Fig. 10).
•
When diameter of wood being cut is greater
than the bar length, make 2 cuts as shown
(Fig. 11).
•
As the felling cut gets close to the hinge, the
tree should begin to fall. When tree begins to
fall, remove saw from cut, stop engine, put
chain saw down, and leave area along retreat
path (Fig. 8).
Limbing
•
Limbing a tree is the process of removing the
branches from a fallen tree. Do not remove
supporting limbs (A) until after the log is
bucked (cut) into lengths (Fig. 12). Branches
under tension should be cut from the bottom
up to avoid binding the chain saw.
•
Never cut tree limbs while standing on tree
trunk.
Bucking
•
Bucking is cutting a fallen log into lengths.
Make sure you have a good footing and stand
uphill of the log when cutting on sloping
ground. If possible, the log should be suppor-
ted so that the end to be cut off is not resting
on the ground. If the log is supported at both
ends and you must cut in the middle, make
a downward cut halfway through the log and
then make the undercut. This will prevent the
log from pinching the bar and chain. Be care-
ful that the chain does not cut into the ground
when bucking as this causes rapid dulling of
the chain. When bucking on a slope, always
stand on the uphill side.
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