Hitachi CS25EC (S) Mode D'emploi page 11

Limbing is removing the branches from a feller
tree.
A majority of kickback accidents occur during
limbing.
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. 2-7G)
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.
GB-10
Fig.2-7G
Fig.2-7J
Fig.2-7M
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 firm 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. 2-7H)
Fig.2-7H
Fig.2-7K
Begin by cutting on the opposite side of the
log. Pull the saw towards you followed by
previous procedure. (Fig. 2-7J)
If the log is lying on the ground make a boring
cut to avoid cutting into the ground. Finish with
a bottom cut. (Fig. 2-7K)
Do not attempt a boring cut if you are not
properly trained. A boring cut involves the use
of the nose of the guide bar and can result in
kickback.
Fig.2-7N
Take a firm stance. Begin with a bottom cut.
The depth of the cut should be about 1/3 of
the log diameter.
Finish with an upper cut. The saw cuts should
meet. (Fig. 2-7L)
Begin by cutting on the opposite side of the
log. Pull the saw towards you, followed by
previous procedure.
Make a boring cut if the log is close to the
ground.
Finish with a top cut. (Fig. 2-7M)
Stop the engine.
Raise the log or change its position, using a
thick branch or pole as a lever.
Do not try to pull the saw free. If you do, you
can deform the handle or be injured by the
saw chain if the saw is suddenly released.
Fig.2-7L