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20
Working instructions
Felling Trees – Only after appropriate training
CAUTION!
Watch for broken or dead branches that could fall during sawing and cause serious injury. Do not saw near
buildings or electrical wires if you do not know in which direction the felled tree could fall.
Do not work at night since you will not be able to see properly, or in rain, snow or storm, as it is diffi cult to
predict the direction in which the tree could fall.
Plan your work in advance.
The work area around the tree should be clear so you have a fi rm foothold.
The operator should always stand on the uphill side of the terrain as the tree is expected to roll or slide after
felling.
Check for broken or dead branches, which can fall and cause serious injury.
The following conditions may affect the direction in which a tree falls:
Wind direction and speed.
Lean of the tree. The inclination is not always visible due to uneven or sloping terrain. Determine the lean of
the tree using a solder or a spirit level.
Branch growth (and hence weight) on one side only.
Surrounding trees and obstacles.
If two or more people are involved in the cutting and felling, the distance between those who are felling and
cutting should be at least twice the height of the tree to be felled. When felling trees, make sure that other people
are not put at risk, that supply lines are not hit and that no material damage is caused. If a tree comes in contact
with a supply line, the supply company has to be notifi ed immediately.
Look for decay and rot. If the trunk is rotted, it may suddenly collapse and fall on you. Make sure there is enough
space for the tree to fall safely. Keep a distance of 2 1/2 tree lengths from the nearest person or other objects.
Engine noise can drown out a warning call.
Remove dirt, stones, loose bark, nails, staples, and wire from the tree where you are going to cut.
Keep an escape route (Fig. A)
Before felling, an escape route has to be planned and cleared, if necessary. The escape route should lead diago-
nally away from the back of the falling tree (Fig. A).
Item 1: Plan of emergency exits
Item 2: Position in which the tree falls
Felling of large trees - only with appropriate training (15 cm in diameter)
Fell large trees using the notch method. Here, a wedge is laterally cut out of the tree according to the desired
direction of fall. After a cut has been made on the case of the other side of the tree, the tree will fall in the direction
of the wedge.
Note: If the tree has large prop roots, they should be removed before making the notch. If the saw is used
to remove the prop roots, the chain should not touch the ground, to prevent it from becoming become blunt.
FZP 2025-E
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