9
Meanwhile, the connection of the
metal trigger causes the safety
switch in the handle enclosure to
close the electrical circuit.
Step 7: After completing steps 1-6,
the chainsaw is ready to be used as
you would an ordinary handheld
electric chainsaw.
should be notified immediately.
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. An
escape path should be planned
and cleared as necessary before
cuts are started. The escape path
should extend back and diagonally
to the rear of the expected line of
fall.
Before felling is started, consider
the natural lean of the tree, the
location of larger branches and the
wind direction to judge which way
the tree will fall. Remove dirt,
stones, loose bark, nails, and
staples from the tree.
1.
NOTCHING UNDERCUT
(A
NOTCH CUT IN A TREE TO
DIRECT THE FALL) Make the
notch 1/3 the diameter of the tree,
perpendicular to the direction of
the fall. Make the lower horizontal
notching cut.
2. FELLING BACK CUT
(THE
FINAL CUT IN A TREE FELLING
OPERATION, MADE ON THE
OPPOSITE SIDE OF THE TREE
FROM THE NOTCHING
UNDERCUT)
HOLDING THE CHAINSAW
Always hold the chainsaw with
your right hand at the rear handle
and your left hand at the front
handle. Grip both handles with the
thumbs and fingers encircling the
handles.
STARTING OPERATION
Start the machine. Press the lock
button first, then press the switch
trigger.
STOPPING OPERATION
Release the power switch trigger to
stop the chainsaw.
REBOUND
Rebound may occur when the saw
chain is jammed or hits a fixed
object in the wood.
BASIC FELLING, LIMBING, AND
CROSS-CUTTING TECHNIQUES
FELLING A TREE
When bucking and felling
operations 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
