Poulan PLN1510 Manuel d'utilisateur télécharger pdf (Page 12)

cuts determine the direction the tree wili

fall.

FELLING A TREE:

WARNING

A retreat path (A) should be planned

and cleared as necessary before cuts

are started. The retreat path should

extend back and diagonally to the rear

of the expected line of fall, as iliustrated

in Figure 5-2A,

CAUTION

If felling a tree on sloping ground, the

chain saw operator shouid keep on the

uphili side of the terrain, as the tree is

likely to roll or slide downhill after it is

felled.

NOTE: Direction of fall (B) is controlled

by the notching cut. Before any cuts are

made, consider the location of large

rbranches and natural lean of the tree

to determine the way the tree will fall.

from the other side of the tree and 1.5”-

2.0’’(3-5cm) above the edge of the

notch (C) (Figure 5-28).

A

'0*

5-2A

WARNING

Do not cut down a tree during high or

changing winds or if there is a danger to

property.Consuit a tree professional. Do

not cut down a tree if there is a danger

of striking utility wires; notify the utility

company before making any cuts.

GENERAL GUIDELINES FOR

FELLING TREES:

Normally felling consists of two(2) main

cutting operations, notching (C) and

making the felling cut (D). Start making

the upper notch cut (C) on the side of

the tree facing the felling direction (E).

Be sure you don’t make the lower cut

too deep into the trunk.

The notch (C) should be deep enough

to create a hinge (F) of sufficient width

and strength.The notch should be wide

enough to direct the fall of the tree for

as long as possible.

WARNING

Never walk in front of a tree that has

been notched. Make the felling cut (D)

Never saw completely through the

trunk. Always leave a hinge. The hinge

guides the tree.if the trunk is completely

cut through, control over the felling

direction is lost.

Insert a wedge or felling lever in the cut

well before the tree becomes unstable

and starts to move,This will prevent the

guide bar from binding in the felling cut

if you have misjudged the falling direct

ion. Make sure no bystanders have

entered the range of the falling tree

before you push it over,

WARNING

Before making the final cut, always rec

heck the area for bystanders, animats

or obstacles,

FELLING CUT:

1. Use wooden or plastic wedges (G)

to prevent binding the bar or chain

(FI) in the cut.Wedges also control

felling (Figure 5-2C).

2. When diameter of wood being cut is

greater than the bar length, make

two(2) cuts as shown (Figure 5-2D).

WARNING

As the felling cut gets close to the

hinge, the tree should begin to fall.

When tree begins to fall, remove saw

from cut, stop engine, put chain saw

down, and leave area along retreat path

(Figure 5-2A),

5-2D

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