Manual Stanley STR-4 in 1 (page 28 of 240) (English, German, Danish, French, Italian, Swedish, Norwegian, Finnish)

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- Never position yourself directly under the branch,

which you want to saw. There is a very big risk that the

branch falls down unexpectedly on you. In general it is

recommended that the pruning saw is set at an angle of

60° to the branch.

- Hold the device well with both hands tightly during the

cutting process and make sure you always pay attention

to a balanced as well as a good ﬁrm position.

- Never try to operate your tool with one hand. Loss of

control over your machine can cause serious or fatal

injuries. Never work on a ladder, a branch of a tree or

other unsafe substrates.

- Do not saw strong branches in one cut, but always in

several steps.

- Put the saw chain for cutting on the branch.

- Put a little pressure for guiding the device but do not

overload the engine.

- Adhere to the cutting technique speciﬁed in Chapter

8.2 to avoid injuries and so that you do not damage your

tree in the long term.

Clean the working area before cutting the disruptive

branches and undergrowth. Then you create a retreat

area, far from the area, on which the cut branches could

fall and remove all obstacles. Keep the work area free,

remove the branches that have been cut off immediately.

Pay attention to your position, the wind direction and

the possible falling direction of the branches. Please be

prepared that the fallen branches could hit back. Place

all other tools and equipment in a safe distance from the

branches to be cut, but not in the area of a backlash.

Always observe the condition of the tree.

Look for decay and rot in the roots and branches. If these

are decayed inside, they can break off unexpectedly and

fall down while cutting. Please look out also for broken

and dead branches, which get loosened through shaking

and could fall on you. In case of very thick or heavy

branches, ﬁrst make a small cut under the branch before

you work from top to bottom, to prevent a breakage.

8.2 Basic cutting technology

Heavy branches will slightly break when cutting and

while doing so long branch straps can tear away from

the trunk, which damages the tree long term. With

the following technology you can reduce this risk

signiﬁcantly:

1. Saw the branch ﬁrst about 10 cm from the trunk, at

the branch’s lower side (see Image A20).

2. Estimate another cut from above at a distance of

about 15 cm to the trunk. Saw it for so long till the

branch breaks. The risk of a breach in a bark at the trunk

is no longer there any more (See Image A21).

3. Finally, remove the remaining snag with a clean cut

along the top of the trunk (See Image A22).

So that the damages to the tree are kept as low as

possible, we recommend seal up the cut surface in

addition with tree wax seal.

8.3 Dangers caused by reactive forces

Reactive forces come during the operation of the saw

chain. In this, the force, which should be used on the

wood is effected on the operator. This happens when

the operating chain comes in contact with a solid object

such as a branch or is jammed. These forces can lead

to a loss of control and injury from it. Understanding

the origin of these forces can help you determine the

moment of shock and to avoid the loss of control.

This saw is designed in such a way that the rebound

effects are not felt as in the case of conventional chain

saws. Nevertheless always keep a ﬁrm grip and a good

position, to have control over the tool in case of doubt.

The most common effects are:

• backlash,

• rebound,

• retraction.

Backlash

The backlash can take place if the operating saw chain

at the upper area of the guide rail comes in contact with

a ﬁxed object or if it is jammed.

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Stanley STR-4 in 1 Manual

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