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UC250DZ без акк. и з.у
Инструкция по эксплуатации Страница: 14

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Makita
UC250DZ без акк. и з.у
Инструкция по эксплуатации Страница: 14

Makita UC250DZ без акк. и з.у — безопасные методы работы с цепной пилой для резки древесины [14/104]

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Makita UC250DZ без акк. и з.у [14/104] Carrying tool

Continue the cut by applying slight pressure to the front

handle, easing the saw back slightly. Move the serrated

rail further down the timber and raise the front handle

again.

When making several cuts, switch the chain saw off

between cuts.

Fig.24

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.25

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.

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.

Fig.26

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

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

the serrated rail cannot be used.

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.27

− 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.

Fig.28

− 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.

− Cut any corrections to the scarf across its entire

width.

Fig.29

− 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.

− 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.30

Carrying tool

Fig.31

Always remove the battery cartridge from the tool and

overlap the guide bar with the scabbard before carrying

the tool. Also cover the battery cartridge with the battery

cover.

Makita UC250DZ без акк. и з.у — безопасные методы работы с цепной пилой для резки древесины [14/104]

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