Echo Pole Pruner - Manual (Page 18)

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When you wish to cut off an unsupported section from the end of a
branch, the weakening or finishing cut should be an overbuck (from top
down). However, you may begin with a shallow underbuck to avoid
splitting and some damage to the tree or limb.
Do not cut, walk or stand on a limb while cutting. Serious personal
injury may result.
If the saw chain becomes pinched in a bind, SHUT OFF THE ENGINE OR
MOTOR. Free the bind by lifting the limb. Use levers, poles, etc. for
lifting. This avoids back injuries.
When a branch is held off the ground by its limbs, determine which of
these are needed for support. Leave these while you cut off all the other
limbs and branches.
You will lose support of the limbs as sections of the branch are cut. Go
to the high ground side of the branch to buck off limbs. Be sure to have
a retreat path should the limb roll toward you as branches are removed.
Do not use SRS models for bore cutting or serious personal injury
may result.
There is danger of kickback during boring. It is not recommended to
bore cut with a pole pruner. Do not use SRS models for bore cutting.
Serious personal injury or death can result from improper bore
cutting.
Avoid windfalls. Windfalls are tangled branches, roots and trees. Clean
these out only by cutting from the perimeter.
LIMBING AND BUCKING
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