Handleiding Gardol GAK-E 20 Li OA (pagina 27 van 340) (Alle talen)

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saw. The same also applies to the chain tension.

Again, while working also check the chain tension

every 10 minutes in order to increase your safety.

New saw chains in particular often tend to expand

more.

Chain brake

Check the operation of the chain brake as de-

scribed in the chapter “Safety devices” and then

release it.

Safety clothing

Always wear appropriate tight-ﬁ tting safety

clothing like special trousers which protect

against cuts, protective gloves and safety shoes.

Hearing protection and protective goggles.

When felling trees or performing forest work, al-

ways wear a protective helmet with integral face

and hearing protection. This will oﬀ er protection

against falling branches and any branches if they

spring back.

7.2 Description of the correct procedures for

basic use of the chainsaw

Felling a tree (Figs. 14-17)

If two or more persons are working at the same

time on felling and cutting back then the minimum

distance between the tree being felled and the

tree being cut back should be at least twice the

height of the tree being felled (Fig. 14). When

felling trees, care must be taken to ensure that no

other persons are endangered, no power supply

lines are hit and no material damage is caused

to equipment or property. In the event that a tree

comes into contact with a power supply line, he

responsible power supply company should be

informed immediately.

When working with the saw on a slope, the opera-

tor of the chainsaw must be standing at a higher

point on the slope than the tree being felled, as

the tree will roll or slip downhill once it has been

felled (Fig. 15).

Before felling the tree you must ﬁ rst plan and if

necessary clear an escape route. This escape

route must lead away diagonally in the opposite

direction to the expected fall direction – this can

be seen in Fig. 16 (A= danger zone, B= direction

of fall, C= escape zone).

Before felling the tree you must take into account

the natural inclination of the tree, the location of

larger branches and the wind direction, as this will

help you to correctly determine the direction in

which the tree will fall.

Dirt, stones, loose bark, nails, staples and wire

must be removed from the tree.

Making the felling notch (Fig. 17)

Cut a notch (A) at right angles to the fall direction

to a depth of 1/3 of the tree diameter as shown

in Fig. 17. First make the lower horizontal felling

notch (1). This prevents the saw chain or the gui-

de rail from becoming trapped when the second

felling notch is made.

Making the felling cut (Fig. 17)

The felling cut should be positioned at least 50

mm above the horizontal felling notch. Make the

felling cut (B) parallel to the horizontal felling

notch. The felling cut should be cut to a depth

which leaves a thin strip (felling hinge strip) (D)

which can act as a hinge. This strip prevents the

tree from rotating and falling in the wrong direc-

tion. Do not cut through the strip. When the felling

cut gets close to the strip the tree should start to

fall. If it becomes clear that the tree may well fall in

a diﬀ erent direction to the desired fall direction (C)

or it starts to lean back and traps the saw chain,

interrupt the felling cut and insert wedges made

of wood, plastic or aluminum to open out the cut

and control the lean of the tree until it leans in the

required direction.

When the tree starts to fall, remove the chainsaw

from the cut, switch it oﬀ , place it on the ground

and exit the danger zone via the planned escape

route. Watch out for falling branches and take

care not to trip.

Removing branches

Here we are talking about removing branches

from the felled tree. When removing branches,

leave any downward facing branches which are

supporting the tree until the trunk of the tree has

been cut up. Smaller branches should be re-

moved as shown in Fig. 18 (A= cutting direction

when removing branches, B= keep away from the

ground! Supporting branches should be left until

the trunk is cut up) in a single cut from the bottom

to the top. Any branches which are under tension

should be cut from the bottom to the top to pre-

vent the saw from becoming trapped.

Cutting the tree trunk into lengths

Here we are looking at the process of cutting the

felled tree into sections. Make sure you have a

sure footing and distribute your body weight even-

ly onto both feet. If possible the trunk should be

underlaid and supported with branches, beams

or wedges. For easy cutting follow the simple ins-

Anl_GAK_E_20_Li_OA_SPK7.indb 27Anl_GAK_E_20_Li_OA_SPK7.indb 27 19.04.2016 15:06:1919.04.2016 15:06:19

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