Manual Alpina EA 2000 Q (page 16 of 24) (All languages)

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1. CHECKS DURING WORK

• Checking the chain tension

The chain tends to stretch gradually as you work,

so you need to check its tension frequently.

IMPORTANT

During the rst period of use

(or after replacing the chain), it must be checked

more frequently due to settling of the chain.

Never work with the chain

loose, as it can be hazardous if the chain slips

out of its guides.

To adjust the chain tension, follow the instructions

in Chapter 5.2.

• Checking the oil delivery

Never use the machine with-

out lubrication! You can check the oil level in the

tank through the transparent gauge. Make sure

you ll up the oil tank every time you use the ma

chine.

Make sure the bar and the

chain are in place when you check the oil de-

livery.

Start the engine and check if the chain oil is de li -

vered as shown in the gure (Fig. 13).

2. DIRECTIONS FOR USE AND CUTTING

TECHNIQUES

Before felling or delimbing for the rst time, prac-

tise sawing logs on the ground or on trestles, so

that you can get familiar with the machine and the

most suitable sawing techniques.

Always hold the machine

with both hands when sawing.

Stop the engine im me dia -

tely if the chain stops during sawing. Be wa re

of kickback, which can occur if the bar con-

tacts an obstacle.

WARNING!

IMPORTANT

WARNING!

• Felling a tree

– When bucking and felling operations are being

performed by two or more persons at the sa me

time, the felling operations should be separated

from the bucking operation by a distance of at

least twice the height of the tree being felled.

Trees should not be felled in a man ner that

would endanger any person, stri ke any utility

line or cause any property damage. If the tree

does make contact with any u ti lity line, the com-

pany should be notied im mediately.

– The chain saw operator should keep on the up-

hill side of the terrain as the tree is likely to roll

or slide downhill after it is felled.

– An escape path should be planned and clea-

red as necessary before cuts are started. The

e scape path should extend back and diagonally

to the rear of the expected line of fall as illus-

trated in Figure 15.

– Before felling is started, consider the natural

lean of the tree, the location of larger branches

and the wind direction to judge which way the

tree will fall.

– Remove dirt, stones, loose bark, nails, staples

and wire from the tree.

• Notching undercut

Make the notch 1/3 the diameter of the tree, per-

pendicular to the direction of falls as illustrated in

Figure 16.

Make the lower horizontal notching cut rst.

his will help to avoid pinching either the saw chain

or the guide bar when the second notch is being

made.

• Felling back cut

– Make the felling back cut at least 50 mm higher

than the horizontal notching cut as illustrated

in Figure 16. Keep the felling back cut parallel

to the horizontal notching cut. Make the fell-

ing back cut so enough wood is left to act as

a hinge. The hinge wood keeps the tree from

twisting and falling in the wrong direction. Do not

cut through the hinge.

– As the felling gets close to the hinge, the tree

should begin to fall. If there is any chance that

the tree may not fall in desired direction or it may

rock back and bind the saw chain, stop cutting

before the felling back cut is complete and use

wedges of wood, plastic or aluminium to open

the cut and drop the tree along the desired line

of fall.

10 USING THE MACHINE

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Alpina EA 2000 Q Manual

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