Instructions / Assembly

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© 1/2017 ECHO Inc.
CS-400 OPERATION
Begin the cut on the side to which
the tree is to fall. Cut a notch about 1/
3 of the way into the tree. The
position of this notch is important
since the tree will try to fall “into” the
notch. The felling cut is made on the
side opposite the notch and at a level
about 5 cm (2 in.) above the bottom
of the notch. Do not try to cut through
to the notch with the felling cut. The
remaining wood between the notch
cut and felling cut about 5 cm (2 in.)
will act as a hinge when the tree falls,
guiding it in the desired direction. When the tree starts to fall, kill the engine,
place the saw on the ground and make your retreat quickly.
To fell big trees with a diameter
exceeding twice the bar length, start the
notching cuts from one side and draw the
saw through to the other side of the
notch. Start the back cut on one side of
the tree, pivoting the saw through to form
the desired hinge on that side. Then
remove the saw for the second cut. Insert
the saw in the first cut, very carefully so
as not to cause kickback. The final cut is
made by drawing the saw forward in the
cut to reach the hinge.
Limbing
Limbing a fallen tree is much the same as
bucking. Never stand on the tree that you
are limbing. When limbing, caution is the
word. Be careful of the tip touching other
limbs. Always use both hands.
Don’t cut with the saw overhead or
aligned vertically with your body. If the
saw should kickback, you may not have
enough control to prevent possible injury.
Direction of fall
First cut
Notch
Second cut
One-third tree diameter
5 cm (2 in.)
Felling cut
Hinge
5 cm (2 in.)
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