Husqvarna 336 用户手册

English

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We recommend that you use a bar that is longer than the 
diameter of the tree, so that you can make the felling cut and 
directional cuts with single cutting strokes. See instructions 
under the heading Technical data section to find out which 
lengths of bar are recommended for your saw.

There are methods for felling trees with a diameter larger than 
the bar length. However these methods involve a much 
greater risk that the kickback zone of the bar will come into 
contact with the tree.

It is very dangerous to remove a trapped tree and there is high 
accident risk.

Never try to fell the tree that is trapped.

Never work in the risk zone of the hanging trapped tree.

The safest method is to use a winch.

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Tractor-mounted

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Portable

Preparations: Work out which side is in tension and where the 
point of maximum tension is (i.e. where it would break if it was 
bent even more).

Decide which is the safest way to release the tension and 
whether you are able to do it safely. In complicated situations 
the only safe method is to put aside your chain saw and use 
a winch.

Position yourself so that you will be clear of the tree or branch 
when the tension is released.

Make one or more cuts at or near the point of maximum 
tension. Make as many cuts of sufficient depth as necessary 
to reduce the tension and make the tree or branch break at 
the point of maximum tension.

If you must cut across tree/limb, make two to three cuts, one 
inch apart, one to two inches deep.

Continue to cut deeper until tree/limb bends and tension is 
released.

Cut tree/limb from outside the bend, after tension has been 
released.