Poulan 2300 AV User Manual download pdf (Page 12)

TYPES OF CUTTING

A. BASIC CUTTING TECHNIQUE

1. IMPORTANT POINTS

a. Cut wood only. Do not cut metal, plastics,

masonry, non-wood building materials, etc. Do not

use your saw to pry or shove away limbs, roots or

other objects.

b. Stop the saw if the chain strikes a foreign object.

Inspect the saw and repair or replace par+s as

necessary.

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

Kickback can occur when the moving chain contacts

an object at the upper portion of the tip of the guide bar

or when the wood closes in and pinches the saw chain

in the cut. Contact at the upper portion of the tip of the

guide bar can causethe chain to dig into the object and

stop the chain for an instant. The result is a iightning

fast, reverse reaction which kicks the guide bar up and

back toward the operator, if the saw chain is pinched

along the top of the guide bar, the guide bar can be

driven rapidly back toward the operator. Either of

these reactions can cause loss of saw control which

can result in serious injury.

2. UNDERSTAND 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

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 con

trol and possible serious injury.

• Pinch-Kickback —

—occurs when the chain, on top of the bar is

suddenly stopped when the top of the bar is used

for cutting.

—rapidly drives the saw straight back toward the

operator.

• Pull-In —

— can occur when the 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-4

que to get the ‘‘feel" of using your saw before you begin a

major sawing operation.

a. Accelerate the engine to full throttle just before

entering the cut by squeezing the throttle trigger.

b. Begin cutting with the saw frame against the log.

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. If 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 when the cut is complete.

g. Stop the engine before setting the saw down after

cutting.

TREE FELLING TECHNIQUES

1, PLAN YOUR SAWING OPERATION CARE

FULLY IN ADVANCE

a Clear the work area. You need a clear area ail

around the tree where you can have secure

footing

b Study the natural conditions that can cause

the tree to fall in a particular direction.

1 ) The WIND direction and speed.

2 ) The LEAN of the tree.

3 ) WEIGHTED with BRANCHES on one side.

4 ) Surrounding TREES and OBSTACLES.

c Look for decay and rot. If the trunk is rotted, it can

snap and fall toward the operator.

Check for broken or dead branches which can

fall on you while cutting.

Make sure there is enough room for the tree to

fall. Maintain a distance of 2Уг tree lengths from the

nearest person or other objects. Engine noise car

drown out a warning call.

Remove dirt, stones, loose -bark, nails,

staples, and wire from the tree where cut^

are to be made. (

Plan to stand on the up-hill side when cut-"

ting on a slope. Figure 18.

Plan a clear retreat path to the rear and

diagonal to the line of fall. Figure 19.

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Poulan 2300 AV User Manual Page 12

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