Ryobi CCW180LBC - Felling Planning and Notched Undercut

15
WARNING:
Do not cut trees or branches near buildings,
which may result in serious injuries or property
damage.
WARNING:.
Check the tree for damaged or dead branches
that could fall and hit you during felling.
WARNING:
Periodically glance at the top of the tree during
the backcut to assure the tree is going to fall in
the desired direction.
WARNING:
If the tree starts to fall in the wrong direction, or
if the saw gets caught or hung up during the fall,
leave the saw and save yourself!
 Felling a tree - When bucking and felling perations
are being performed by two or more persons,
at the same time, the felling operation should
be separated from the bucking operation by a
distance of at least twice the height of the tree
being felled. Trees should not be felled in a manner
that would endanger any person, strike any utility
line or cause any property damage. If the tree
does make contact with any utility line, the utility
companyshouldbenotiedimmediately.
 Before any cuts are started, pick your escape
route (or routes in case the intended route is
blocked); clear the immediate area around the
tree and make sure there are no obstructions in
your planned path of retreat. Clear path of safe
retreat approximately 135° from planned line of
fall. The retreat path should extend back and
diagonally to the rear of the expected line of fall.
See Figure 12.
 Before felling is started, consider the force and
direction of the wind, the lean and balance of the
tree, and the location of large limbs. These things
inuencethedirectioninwhichthetreewillfall.
Do not try to fell a tree along a line different from
its natural line of fall.
 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.
 Remove dirt, stones, loose bark, nails, staples,
and wire from the tree where felling cuts are to
be made.
 Notched Undercut. Cut a notch about 1/3
the diameter of the tree, perpendicular to the
direction of fall. Make the cuts of the notch so
they intersect at a right angle to the line of fall.
This notch should be cleaned out to leave a
straight line. To keep the weight of the wood off
the saw, always make the lower cut of the notch
before the upper cut. See Figure 13.
90°
PLANNED PATH OF SAFE RETREAT 135° FROM PLANNED
LINE OF FALL
PLANNED LINE OF FALL
SAFE
RETREAT
ZONE
PLANNED
LINE OF FALL
Fig. 12
SAFE
RETREAT
ZONE
45°
45°
90°
135°
135°
SAFE
RETREAT
ZONE
HINGE
2 in. OR 1/10 DIA
NOTCH -
APPROX. 1/3
DIAMETER OF
TRUNK
BACK CUT
2 in.
Fig. 13
OPERATION