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- Check the chain brake proper function (see "chain brake)
In some circumstances, it is dangerous to proceed to felling. Do not cut down a tree:
- If you do not have a clear view of the felling area, for example because of fog, rain, snow, or at dusk
or dawn.
- If you can not precisely determine the direction of tree fall, because of unpredictable wind's
strength and direction.
- if felling is located on a slippery, wet or frozen ground, which does not allow you to get proper
footing and balance.
5.2- Working with the chainsaw
5.2.1- Felling a tree
Felling demands great experience. Both, felling and limbing should be carried out by trained
persons only.
1) General Guidelines for Felling Trees
- When bucking and felling operations are being performed by two or more persons at the same time,
the felling operations should be separated from the bucking operation by a distance of at least twice
the height of the tree being felled.
- Trees should not be felled in a 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 chainsaw 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 cuts are started.
The escape path should extend back and diagonally to the rear of the expected line of fall as
illustrated in Fig.12.
- 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.
- In the area of felling trees, there must not be any other persons or animals.
- The safety distance from the tree being felled is minimally 2 ½ the length of the tree.
Never cut with the nose of the guide bar. Danger of kickback.
The direction of fall is controlled by the notching cut.
Felling can start only under the condition that escape way form the
felling tree is provided, see Fig.12: (a) tree felling direction; (b) Danger
zone; (c) Escape route
2) Felling
1. Decide the felling direction considering the wind, lean of the
tree, location of heavy branches, ease of completing the task
after felling and other factors.
2. While clearing the area around the tree, arrange a good
foothold and retreat path.
3. Make a notch cut one-third of the way into the tree on the
felling side (Fig.13).
4. Make a felling cut from the opposite side of the notch and at a level slightly higher than the bottom
of the notch (Fig.13)
WARNING – Before felling a tree, evacuate all persons from work area and monitor work area
Fig.12
Fig.13
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