Poulan 1995-03 User Manual - Page 11

TYPES

OF

CUTTING

A.

BASIC

CUTTING

TECHNIQUE

I.

IMPORTANT

POINTS

a.

Cut

wood

only.

Do

not

Otis

metal;

plastics:

mason-

ry,

non

-wood

building

materials;

etc.

h.

Stop

the

saw

if

the

chain

strikes

a

foreign

object.

Inspect

the

saw

and

repair

or

replace

pans

as

nec-

essary.

c.

Keep

the

chain

out

of

dirt

and

sand.

Even

a

small

amount

of

dirt

will

quickly

dull

a

chain

and

thus increase

the

possibility

of

kickback.

A

KICKBACK

WARNING

Contact

at

the

upper

portion

of

the

tip

of

the

guide

bar

can

cause

the

chain

to

dig

into

the

object,

which

stops

the

chain

for

an

instant.

The

result

is

a

lightning

fast,

reverse

reaction

which

kicks

the

guide

bar

up

and

back

toward

the

operator.

This

is

kickback.

If

the

saw

chain

is

pinched

along

the

top

of

the

guide

bar,

the

guide

bar

o

an

be

driven

rapidly

back

toward

the

operator.

Either

f

these

reactions

can

cause

loss

of

saw

control

which

can

result

in

serious

injury.

//

Begin

cutting

with

the

saw

frame

against

..-""

the

log.

Figure

19

2.

OTHER

REACTIVE

FORCES

Pinch-Kickback

and

Pull

-In

occur

when

the

chain

is

suddenly

stopped

by

being

pinched,

caught,

or

by

contacting

a

foreign

object

in

the

wood.

This

stopping

of

the

chain

results

in

a

reversal

of

the

chain

force

used

to

cut

wood

and

causes

the

saw

to

move

in

the

opposite

direction

of

chain

rotation.

Either

reaction

can

result

in

loss

of

control

and

possible

serious

injury.

•

Pinch

-Kickback

—

—

occurs

when

the

chain

on

lop

of

the

bar

is

sud-

denly

stopped.

—

rapidly

drives

the

saw

straight

back

toward

the

operator

•

Pull

-In

—

—

occurs

when

the

chain

on

the

bottom

of

the

bar

is

suddenly

stopped.

—

pulls

the

saw

rapidly

forward.

3.

USING

YOUR

CHAIN

SAW

Practice

cutting

a

few

small

logs

using

the

following

technique

to

get

the

"feel"

of

using

your

saw

before

you

begin

a

major

sawing

operation.

a.

Accelerate

engine

to

full

throttle

before

entering

cut

by

squeezing

the

throttle

trigger.

b.

Begin

cutting

with

the

saw

frame

against

the

log.

Figure

19.

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.

If

you

run

the

saw

at

full

throttle

without

a

cutting

load,

unnecessary

wear

can

occur

to

the

chain,

bar,

and

engine.

f.

To

avoid

losing

control

when

cut

is

complete,

do

not

put

pressure

on

saw

at

end

of

cut.

g.

Stop

the

engine

before

setting

the

saw

down.

B.

TREE

FELLING

TECHNIQUES

I.

CAREFULLY

PLAN

YOUR

SAWING

OPERA-

TION

IN

ADVANCE

a.

Clear

the

work

area.

You

need

a

clear

area

all

around

tree

where

you

can

have

secure

footing.

b.

Study

the

natural

conditions

that

can

cause

the

nee

to

fall

in

a

particular

direction.

IT

The

WIND

direction

and

speed.

2.)

The

LEAN

of

the

tree.

The

lean

of

a

tree

might

not

he

apparent

due

to

uneven

or

sloping

terrain.

Use

a

plumb

or

level

to

determine

the

direction

of

nee

lean.

3.1

WEIGHTED

and

BRANCHES

on

one

side.

4.1

Surrounding

TREES

and

OBSTACLES.

c.

Look

for

decay

and

rot.

If

the

trunk

is

rotted.

it

can

snap

and

fall

toward

the

operator.

d.Check

for

broken

or

dead

branches

which

can

fall

on

you

while

cutting.

c.

Make

sure

there

is

enough

room

for

the

tree

to

fall.

Maintain

a

distance

of

2

1/2

tree

lengths

from

then

earest

person

or

other

objects.

Engine

noise

can

drown

out

a

warning

call.

f.

Remove

dirt,

stones,

loose

bark,

nails,

staples,

and

wire

from

the

tree

where

cuts

are

to

be

made.

g.

Plan

to

stand

on

the

up

-hill

side

when

on

a

slope.

Figure

20.

h.

Plan

to

clean

retreat

path

to

the

rear

and

diago-

nal

to

the

line

offal

.

Figure

21.

Cut

,,

But

toss

Roots

First

Stay

On

U

hill

Side

Of

Tree

Wh

n

Felling

ra

ta

Of

Fall

451

Figure

20

Figure

21

Poulan 1995-03 User Manual - Page 11

Types, Cutting

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