Bushranger CS4020 Operator'S Manual Download Page 14

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GENERAL CUTTING INSTRUCTIONS

(CONTINUED)

Start the engine, see that is running properly.

Squeeze the trigger to open the throttle wide

open, then start the cut. It is not necessary to

press down hard to make the saw cut. If the

chain is properly sharpened, the cutting

should be relatively effortless. Pushing the saw

too hard will slow the engine and cutting will

actually be more difficult.

Some material may adversely affect the housing

of your chain saw.

(Example: palm tree acid, fertilizer etc.)

To avoid housing deterioration carefully remove

all packed saw dust around clutch and guide bar

area and wash with water.

WARNING DANGER

Do not let the nose or tip of the guide bar touch

anything while the engine is running to avoid

kickback.

FELLING A TREE

A falling tree can seriously damage anything it

may hit a car, a house, a fence a power line or

another tree. There are ways to make a tree fall

where you want it, so first decide where that is!

Before cutting, clear the area around the tree.

You will need good footing while working and

you should be able to work the saw without

hitting any obstacles.

Next select a path of retreat. When the tree

begins to fall you should retreat away from the

direction of fall at a 45-degree angle to avoid

the trunk kicking back over the stump. (See

figure A).

Begin the cut on the side to which the tree is to

fall. Cut a notch approximately 1/3 of the way

into the tree. (See figure B). The position of this

notch is important since the tree will

try to fall “into” the notch. (See figure B).

The felling cut is made on the side opposite

the notch. Make the felling cut placing spiked

bumper 2.5 cm to 5cm above the bottom of the

notch and stop cutting at approximately 1/10

of diameter to the inner edge of the notch (See

figure C) in order to leave the uncut portion

of the wood as a hinge.

Do not try to cut through to the notch with the

felling cut. The remaining wood between the

notch cut and felling cut will act as a hinge when

the tree falls, guiding it in the desired direction.

When the tree starts to fall, stop the engine,

place the saw on the ground and make your

retreat quickly.

To fell a big tree with a diameter exceeding twice

the bar length start the notching cuts from one

side and draw the saw through to the other side

of the notch.

Start the back cut on one side of the tree with

spiked bumper engaged, pivoting the saw

through to from the desired hinge on that side.

Then remove the saw for the second cut.

Insert the saw in the first cut very carefully so as

not to cause kickback.

The final cut is made by drawing the saw forward

in the cut to reach the hinge. (See figure D).

FELLING A TREE

A falling tree can seriously damage anything it may hit a
car, a house, a fence a powerline or another tree.
There are ways to make a tree fall where you want it, so
first decide where that is!
Before cutting, clear the area around the tree. You will
need good footing while working and you should be
able to work the saw without hitting any obstacles.
Next select a path of retreat.
When the tree begins to fall you should retreat away
from the direction of fall at a 45-degree angle to avoid
the trunk kicking back over the stump. (See right above
figure)
Begin the cut on the side to which the tree is to fall.
Cut a notch approximately 1/3 of the way into the tree.
(See figure A)
The position of this notch is important since the tree will
try to fall “into” the notch. (See figure A)
The felling cut is made on the side opposite the notch.
Make the felling cut placing spiked bumper 2.5 cm to
5cm above the bottom of the notch and stop cutting at
approximately 1/10 of diameter to the inner edge of the
notch (See figure B) in order to leave the uncut portion
of the wood as a hinge.
Do not try to cut through to the notch with the felling
cut. The remaining wood between the notch cut and
felling cut will act as a hinge when the tree falls, guiding
it in the desired direction.
When the tree starts to fall, kill the engine, place the
saw on the ground and make your retreat quickly.
To fell big tree with a diameter exceeding twice the bar
length start the notching cuts from one side and draw
the saw through to the other side of the notch.
Start the back cut on one side of the tree with spiked
bumper engaged, pivoting the saw through to from the
desired hinge on that side.
Then remove the saw for the second cut.
Insert the saw in the first cut very carefully so as not to
cause kickback.
The final cut is made by drawing the saw forward in the
cut to reach the hinge. (See figure C)