Kogan CERTA CT20V2BCHSA, User Manual

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5. Protective clothing
You must wear the appropriate, tight-fitting protective clothing such as cut-resistant
trousers.
6. Hearing protection and safety glasses
Wear a protective helmet with integrated hearing and face protection during felling and
forest work.
This protects from falling branches and branches.
8. Correct basic work procedures
1. Cutting down a tree (Fig. 12-15)
If two or more persons cut and fell at the same time, the distance between the cutting and
cutting persons should be at least twice the height of the tree to be cut (Fig.12). When
felling trees, care must be taken that other persons are not exposed to danger, that no
supply lines are hit and that no material damage is caused. If a tree comes into contact
with a power line, the power company must be informed immediately.
When sawing on slopes, the chainsaw operator should be on the ground above the tree to
be cut, as the tree is likely to roll or slide downhill after cutting (Fig.13). Before felling, an
escape route must be planned and, if necessary, cleared. The escape route must lead
diagonally from the expected fall line to the rear, as shown in Figure 14 (A = danger zone, B
= fall direction, C = escape area).
Before felling, the natural inclination of the tree, the position of larger branches and the
wind direction must be taken into account to assess the fall direction of the tree.
Remove dirt, stones, loose bark, nails, staples, and wire from the tree.
2. Set notch cut (Fig. 15a)
Saw a notch (A) at right angles to the direction of fall with a depth of 1/3 of the tree
diameter, as shown in Figure 15a.
First, make the bottom horizontal notch (A). This will avoid jamming the saw chain or guide
bar when setting the second notch.
3. Setting the felling cut (Fig. 15a/15b)
Place the felling cut at least 50 mm above the horizontal notch cut. Make the felling cut
(B) parallel to the horizontal notch cut. Saw the felling cut only deep enough to leave a
web (felling bar) (D) which can act as a hinge. The bridge prevents the tree from turning
and falling in the wrong direction. Do not saw through the bridge. When the felling cut
approaches the bridge, the tree should begin to fall. If it appears that the tree may not fall
in the desired fall direction (C) or may tilt back and clamp the saw chain, interrupt the
felling cut and use wood, plastic or aluminium wedges to open the cut and turn the tree to
the desired fall line.
When the tree begins to fall, remove the chainsaw from the cut, turn it off, lay it down and
leave the danger area via the planned escape route. Watch out for falling branches and do
not trip.