Handleiding Dolmar ES-2141 (pagina 15 van 124) (Nederlands, Duits, Engels, Frans, Italiaans, Portugees, Spaans, Turks, Deens)

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Adjusting the chain lubrication (Fig. 26)

You can adjust the oil pump feed rate with the adjusting

screw.

WORKING WITH THE CHAIN SAW

CAUTION:

• Always use a front handle and rear handle and firmly

hold the tool by both front handle and rear handle

during operations.

• Always secure the timber to be cut, otherwise the cut

fragments may cause personal injury.

Bucking (Fig. 27)

For bucking cuts, rest the spike bumper shown in the

figure on the wood to be cut.

With the saw chain running, saw into the wood, using the

rear handle to raise the saw and the front one to guide it.

Use the spike bumper as a pivot.

Continue the cut by applying slight pressure to the front

handle, easing the saw back slightly. Move the spike

bumper further down the timber and raise the front handle

again.

When making several cuts, switch the chain saw off

between cuts.

CAUTION:

• If the upper edge of the bar is used for cutting, the

chain saw may be deflected in your direction if the

chain becomes trapped. For this reason, cut with the

lower edge, so that the saw will be deflected away from

your body. (Fig. 28)

Cut wood under tension on the pressure side (A) first.

Then make the final cut on the tension side (B). This

prevents the bar from becoming trapped. (Fig. 29)

Limbing

CAUTION:

• Limbing may only be performed by trained persons. A

hazard is presented by the risk of kick-back.

When limbing, support the chain saw on the trunk if

possible. Do not cut with the tip of the bar, as this

presents a risk of kickback.

Pay particular attention to branches under tension. Do not

cut unsupported branches from below.

Do not stand on the felled trunk when limbing.

Burrowing and parallel-to-grain cuts

CAUTION:

• Burrowing and parallel-to-grain cuts may only be

carried out by persons with special training. The

possibility of kickback presents a risk of injury.

Perform parallel-to-grain cuts at as shallow an angle as

possible. Carry out the cut as carefully as possible, as the

spike bumper cannot be used. (Fig. 30)

Felling

CAUTION:

• Felling work may only be performed by trained

persons. The work is hazardous.

Observe local regulations if you wish to fell a tree.

(Fig. 31)

– Before starting felling work, ensure that:

(1) Only persons involved in the felling operation are in

the vicinity;

(2) Any person involved has an unhindered path of

retreat through a range of approximately 45° either

side of the felling axis. Consider the additional risk

of tripping over electrical cables;

(3) The base of the trunk is free of foreign objects,

roots and ranches;

(4) No persons or objects are present over a distance

of 2 1/2 tree lengths in the direction in which the

tree will fall.

– Consider the following with respect to each tree:

• Direction of lean;

• Loose or dry branches;

• Height of the tree;

• Natural overhang;

• Whether or not the tree is rotten.

– Consider the wind speed and direction. Do not carry

out felling work if the wind is gusting strongly.

– Trimming of root swellings: Begin with the largest

swellings. Make the vertical cut first, then the horizontal

cut.

– Cut a scarf: The scarf determines the direction in which

the tree will fall, and guides it. It is made on the side

towards which the tree is to fall. Cut the scarf as close

to the ground as possible. First make the horizontal cut

to a depth of 1/5 -1/3 of the trunk diameter. Do not

make the scarf too large. Then make the diagonal cut.

(Fig. 32)

– Cut any corrections to the scarf across its entire width.

– Make the back cut a little higher than the base cut of

the scarf. The back cut must be exactly horizontal.

Leave approximately 1/10 of the trunk diameter

between the back cut and the scarf.

The wood fibers in the uncut trunk portion act as a

hinge. Do not cut right through the fibers under any

circumstances, as the tree will otherwise fall

unchecked. Insert wedges into the back cut in time.

(Fig. 33)

– Only plastic or aluminum wedges may be used to keep

the back cut open. The use of iron wedges is

prohibited.

– Stand to the side of the falling tree. Keep an area clear

to the rear of the falling tree up to an angle of 45° either

side of the tree axis (refer to the “felling area” figure).

Pay attention to falling branches.

– An escape path should be planned and cleared as

necessary before cuts are started. The escape path

should extend back and diagonally to the rear of the

expected line of fall as illustrated in figure. (Fig. 34)

MAINTENANCE

CAUTION:

• Always be sure that the tool is switched off and

unplugged before attempting to perform inspection or

maintenance.

• Always wear gloves when performing any inspection or

maintenance.

• Never use gasoline, benzine, thinner, alcohol or the

like. Discoloration, deformation or cracks may result.

Carry out the maintenance work described below at

regular intervals. Warranty claims will be accepted only if

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