Safety Manual

41
ENGLISH
OPERATION
DRAW-ACROSS METHOD
Standard procedures are used here,
except that the cuts have to be extended
from one side to the other when the blade
doesn’t t across the trunk.
Start the lower cut of the notch by
pivoting in from one corner to a depth of
1/3 trunk diameter. Then reverse the saw
direction, reinsert saw in cut, and draw
it across to the other corner. Complete
the cut on that side. Do the same thing to
make the intersecting top cut. Be careful
to keep your body out of the kickback
path when making this angled top cut.
Remove the cut wood wedge.
For the back cut, start at the corner
at least 2 inches (51 mm) above the
intersection of the notch. Plan to leave
10 to 12 percent of the trunk diameter
uncut as a hinge. Pivot the saw from
the back towards the hinge. Reverse
saw direction, reinsert saw into the cut,
and draw it across the back of the tree.
Cut the other side to complete the felling
cut and the hinge. Follow standard felling
procedures from this point.
PLUNGE CUTTING METHOD
This method uses the same steps for
notching and felling cuts as described in
the “Draw-Across Method.”
WARNING! Plunge cutting entails
boring inside the tree. Be aware that there is
always a chance of kickback even when the
plunge cut is expertly done.
After notching the trunk, stand at the left
and aim the saw at the middle of the notch
intersection. Throttle up to a slow chain
speed. Make contact at the middle with
the bottom edge of the bar, NOT THE BAR
NOSE!
Pivot the saw in to a depth of at least 6
inches (15 cm) before smoothly increasing
speed to full throttle. Then gradually shift
cutting angle and pressure to bore straight
into the trunk. When all the way inside,
hollow out the trunk. But do not cut away
any more of the hinge wood than necessary.
Now make the back cut to fell the tree.
COMPLETION OF BORE
1
FELLING CUTS
2
3
4
WEDGES
DRAW-ACROSS METHOD
NOTCHING
CUTS
FELLING
CUTS
2
3
4
5
1
START OF
PLUNGE
CUT OR
BORE