Hitachi CS 51EAP Manual Do Utilizador

13

Cut a large, wide notch. Then cut a recess into the 

center of the notch. Always leave a hinge on both 

sides of the center cut. (Fig. 22)

Fig. 22

Complete the felling cut by sawing around the trunk 

as in the Fig. 23.

Fig. 23

  These methods are extremely dangerous 

because they involve the use of the nose of 

guide bar and can result in kickback.

  Only properly trained professionals should 

attempt these techniques.

Limbing is removing the branches from a feller tree.

  A majority of kickback accidents occur during 

Iimbing.

  Do not use the nose of the guide bar. Be 

extremely cautious and avoid contacting the 

log, other limbs or objects with the nose of the 

guide bar. Be extremely cautious of limbs under 

tension. They can spring back towards you and 

cause loss of control resulting in injury. (Fig. 24)

Fig. 24

Stand on the left side of the trunk. Maintain a secure 

footing and rest the saw on the trunk. Hold the saw 

close to you so that you are in full control of it. Keep 

well away from the chain. Move only when the trunk 

is between you and the chain. Watch out for spring 

back of limbs under tension.

When limbing thick branches, the guide bar may get 

pinched easily. Branches under tension often snap 

up, so cut troublesome branches in small steps. 

Apply the same principles as for cross cutting. Think 

ahead and be aware of the possible consequences 

of all your actions.

Before starting to cut through the log, try to imagine 

what is going to happen. Look out for stresses in 

the log and cut through it in such a manner that the 

guide bar will not get pinched.

Take a fi rm stance. Begin with an upper cut. Do 

not cut too deeply, about 1/3 of the log diameter is 

enough. Finish with a bottom cut. 

The saw cuts should meet. (Fig. 25)

26

24

27

28

25

29

33

28

29

30

31

32

Fig. 25

28. Relieving cut

29. Cross cut

30.  Pressure on top

31. Pressure side

32. Tension side

33.  Relative depth of saw cuts

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2012/03/19   16:33:45

2012/03/19   16:33:45