Notching undercut, Felling back cut, Limbing and pruning – Powerplus POWXQG4040 CHAINSAW 2400W 405MM EN User Manual
Page 13: Cutting spring poles, Powxqg4040

POWXQG4040
EN
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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 company should be notified
immediately.
The product 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 cut are started. The
escape path should extend back and diagonally to the rear of the expected line of fall (Fig.
24).
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, staples and wire from the tree.
10.1.1
Notching undercut
Make the notch (Fig. 25, B) 1/3 the diameter of the tree, perpendicular to the direction of falls
(Fig. 25). Make the lower horizontal notching cut first. This will help to avoid pinching either the
saw chain or the guide bar when the second notch is being made.
10.1.2
Felling back cut
Make the felling back cut (Fig. 25, A) at least 50mm higher than the horizontal notching cut
(Fig. 25). Keep the felling back cut parallel to the horizontal notching cut. Make the felling
back cut so enough wood is left to act as a hinge. The hinge (Fig. 25, C) wood keeps the
tree from twisting and falling in the wrong direction. Do not cut through the hinge.
As the felling gets close to the hinge, the tree should begin to fall. If there is any chance
that the tree may not fall in desired direction or it may rock back and bind the saw chain,
stop cutting before the felling back cut is complete and use wedges of wood, plastic or
aluminium to open the cut and drop the tree along the desired line of fall.
When the tree begins to fall remove the product from the cut, stop the motor, put the
product down, then use the retreat path planned. Be alert for overhead limbs falling and
watch your footing.
10.2
Limbing and pruning
Limbing is removing the branches from a fallen tree. When limbing leave larger lower limbs to
support the log off the ground. Remove the small limbs in one cut (Fig. 26). Branches under
tension should be cut from the bottom up to avoid binding the product.
WARNING! Never climb into a tree to limb or prune! Do not stand on
ladders, platforms, logs, or in any position which may cause you to lose the
balance or control of the saw! When pruning trees, it is important not to
make the flush cut next to main limp or trunk until you have cut off the limb
further out to reduce the weight! This prevents stripping the bark from the
main member
WARNING! If the limbs to be pruned are above chest height, hire a
professional to perform the pruning
10.3
Cutting spring poles
A spring pole is any log, branch, rooted stump, or sapling which is bent under tension by other
wood so that it springs back if the wood holding it is cut or removed. On a fallen tree, a rooted
stump has a high potential of springing back to the upright position during the bucking cut to
separate the log from the stump. Watch out for spring poles, they are dangerous.