Blocking - Removing Sections From A Standing; Tree - Stihl MSA 220.0 T Instruction Manual

8 Basic Working Technique
￭ To reduce the risk of severe or fatal personal injury from
reactive forces, including kickback, or loss of control when
cutting wood under tension:
– Always start with a relieving cut (1) at the
compression side (A) of the branch, and then make
a bucking cut (2) at the tension side (B).
– If a pinch occurs that traps the bar/chain, switch off
the motor, activate the chain brake, remove the
battery and remove the saw from the branch,
exercising caution that the limb does not suddenly
snap or release.
8.4

Blocking - Removing Sections from a Standing

Tree

8.4.1 Conventional Notch
WARNING
￭ These in-tree instructions apply to STIHL top-handle
chain saws, designed exclusively for professional, in-tree
use. For basic instructions on felling a tree from the
ground, please see the instruction manual for your STIHL
rear-handle chain saw.
￭ These basic working techniques are not meant to
substitute for the judgment of an experienced professional
with direct knowledge of on-site conditions. A different
type of notch or working technique may be appropriate for
your particular circumstance. Always exercise good
professional judgment and discretion in determining how
to safely complete a cutting task.
0458-007-8601-A
A
The notch (A) determines the direction of fall. Make the
notch perpendicular to the desired line of fall. Be aware of
conditions such as wind, tree lean, the slope of the terrain
and other factors that could alter the direction of fall.
For a conventional notch:
► First, cut down at a 45 degree angle to a depth of
approximately 1/5 to 1/4 of the trunk diameter.
1
When making the notch, use the gunning sight (1) on the
saw to check the desired direction of fall:
► Place the felling notch perpendicular to the line of fall.
Position the saw so that the gunning sight (1) points
exactly in the direction you want the tree to fall.
► To complete the felling notch, make a horizontal cut that
meets the bottom of the first cut.
► Remove the resulting 45 degree piece and confirm that
the back of the felling notch is perpendicular to the desired
line of fall.
English
A
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