Husqvarna 353 EPA I 用户手册

English

 – 19

1

Make sure the cutting equipment will not jam in the cut.

2

Make sure the object you are cutting will not split.

3

Make sure the chain will not strike the ground or any other 
object during or after cutting.

4

Is there a risk of kickback?

5

Do the conditions and surrounding terrain affect how 
safely you can stand and move about?

Two factors decide whether the chain will jam or the object 
that you are cutting will split: the first is how the object is 
supported before and after cutting, and the second is whether 
it is in tension.

In most cases you can avoid these problems by cutting in two 
stages; from the top and from the bottom. You need to support 
the object so that it will not trap the chain or split during 
cutting.

The following instructions describe how to handle the 
commonest situations you are likely to encounter when using 
a chain saw.

The log is lying on the ground. There is little risk of the chain 
jamming or the object splitting. However there is a risk that the 
chain will touch the ground when you finish the cut.

Cut all the way through the log from above. Avoid letting the 
chain touch the ground as you finish the cut. Maintain full 
throttle but be prepared for what might happen.

If it is possible (can you turn the log?) stop cutting about 2/3 
of the way through the log.

Turn the log and finish the cut from the opposite side.

The log is supported at one end. There is a high risk that it 
will split.

Start by cutting from below (about 1/3 of the way through).

Finish by cutting from above so that the two cuts meet.

The log is supported at both ends. There is a high risk that 
the chain will jam.