B. tree felling techniques – Poulan 3400 User Manual

Page 12

Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".

• Pull-In —

— can occur when fhe chain on the bottom of the

bar is suddenly stopped.

—pulls the saw rapidly forward.

3. PROCEDURE

Practice cutting a few small logs using the following techni

que to get the “feel” of using your saw before you begin a

major sawing operation.

Accelerate the engine to full throttle just before

entering the cut

by squeezing the throttle trigger.

Begin cutting with the saw frame or spur against

the wood.

Figure 18.

c. Keep the engine at full throttle the entire time you

are cutting.

d. Allow the chain to cut for you; exert only light

downward pressure.

If you force the cut, damage to

the bar, chain, or engine can result.

e. Release the throttle trigger as soon as the cut is

completed}

allowing the engine to idle.

you run the

saw at full throttle without a cutting load, unnecessary
wear can occur to the chain, bar, and engine.

f. Do not put pressure on the saw at the end of the cut

to avoid losing control wherrthe cut is complete.

g ■

Stop the engine before setting the saw down after

cutting.

Figure 18

B. TREE FELLING TECHNIQUES

1. PLAN YOUR SAWING OPERATION CARE

FULLY IN ADVANCE

Clear the work area.

You need a clear area all

around the tree where you can have secure
footing.

Study the natural conditions that can cause

the tree to fall in a particular direction:

) The

WIND

direction and speed

2. ) The

LEAN

of the tree

3. )

WEIGHTED

with

BRANCHES

on one side

) Surrounding

TREES

and

OBSTACLES

Look for decay and rot.

If the trunk is rotted,

it could snap and fall toward the operator.

Check for broken or dead branches

which

could fall on you while cutting.

Make sure there Is enough room for the tree

..... to fail.

J\/laintaining a distance - of .

tree

- “lengths from the nearest person or other ob

jects. Engine noise may drown out warning

call-

Remove dirt, stones, loose bark, nails,

staples, and wire from the tree where cuts
are to be made.

Plan to stand on the up-hill side when cut

ting on a slope.

Plan a clear retreat path to the rear and

diagonal to the line of fail.

Figure

2. FELLING SMALL TREES —LESS THAN 6"

IN DIAMETER

a. If you know the direction of fall:

1. ) Make a single felling cut on the side away

from the direction of fall.

) Cut all the way through.

3. ) Stop the saw, put it down, and get away

quickly on your planned retreat path.

b. If you are not sure which way the tree will fall,

use the notch method described for felling large

trees.

warning

DO NOT CUT:

/ ^ '

— near electricai wires or buildings.
— if you do not know the direction of tree fall.

—at night since you will not be able to see well.
— during bad weather — strong wind, snow, rain,

etc.

DON’T PUT YOURSELF IN THESE POSITIONS