Homelite UT74121A Operator's Manual page 20

PROPER PROCEDURE FOR TREE FELLING
See Figure 30.
1. Pick your escape route (or routes in case the intended
route is blocked). Clear the immediate area round the
tree and make sure there are no obstructions in your
planned path of retreat. Clear the path of safe retreat
approximately 135° from the planned line of fall.
2. Consider the force and direction of the wind, the lean
and balance of the tree, and the location of large
limbs. These things influence 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.
OPERATION
PLANNED LINE OF FALL
PLANNED
LINE OF FALL
UK - Page 20
90°
PLANNED PATH OF SAFE RETREAT
135° FROM PLANNED LINE OF FALL
RETREAT
135°
45°
90°
45°
135°
RETREAT
SAFE
RETREAT
ZONE
SAFE
RETREAT
ZONE
Fig. 30