Stiga SPR 255 Manual De Instrucciones página 141

USING THE MACHINE
WARNING!
a rope and a belt slings, carefully follow the
instructions under "For your safety" (
WARNING!
• Do not work standing on unstable bases or
rung ladders.
• Do not overreach.
• Do not cut above shoulder height.
1. Stand opposite the branch you want to cut.
2. Start cutting lower branches followed by the
higher ones.
3. Cut downwards to prevent the bar from getting
jammed.
• Felling (Fig. 14)
WARNING!
always stand uphill from the tree and check
that the felled trunk cannot cause damage if it
rolls down the hill.
1. Decide where the tree should fall – you should
consider the wind, the natural lean of the tree,
the position of the heaviest branches and how
easy the work is after felling, etc.
2. Clear the area around the tree and find a stable
place to stand.
3. Plan obstacle-free escape routes at a 45° angle
back and away from the direction of fall. These
routes must allow you reach a safe area at a
distance of about 2.5 times the length of the
tree to be felled.
4. On the side of the fall, mark a felling notch
around a third of the trunk's diameter.
5. Cut the tree on the other side, slightly above the
bottom of the notch, leaving the uncut wood to
act as a "hinge" (1) of approx. 5-10 cm.
6. Reduce the thickness of this hinge without pull-
ing out the bar, until the tree falls.
7. In particular or unstable conditions, you can
complete felling by inserting wedges (2) on the
opposite side of the fall, and hitting them with a
hammer until the tree falls.
• Bucking (Fig. 15)
WARNING!
bran ches are lying on the ground, the risk of
them being under tension, the direction the
branch may go during cutting and the risk of
the tree being unstable after the branch has
been cut.
For pruning high up using
When felling on slopes,
Be careful of where the
1. Check the direction in which the branch is at-
tached to the tree.
2. First cut on the side where the branch bends
3.1).
and then finish cutting on the opposite side.
• Sawing a log on the ground (Fig. 17)
Cut up to half the diameter, roll the log over and
finishing sawing on the other side.
• Sawing a raised log (Fig. 18)
1. If you are sawing the overhanging end of a sup-
ported log (A), first cut a third of the diameter
from the bottom upwards, then finish from the
top.
2. If you are sawing between two supports (B), cut
a third of the diameter from the top downwards,
then finish from the bottom.
3. END OF OPERATIONS
When you have finished your work:
– Switch off the engine as indicated above
(Chap. 6).
– Wait for the chain to stop and allow the machine
to cool.
– Loosen the bar fastening nut to reduce chain
tension.
– Remove any traces of sawdust or oil deposits
from the chain.
– If there is excessive dirt or resin build-up, disas-
semble the chain and place it in a container with
a specific cleanser. Then rinse it with clean water
and treat it with a suitable anticorrosive spray,
before reassembling on the machine.
– Fit the bar cover before reassembling the ma-
chine.
WARNING!
be f ore storing in any enclosure.
To reduce fire hazards, clean the machine
thoroughly to get rid of any sawdust, bran-
ches, leaves or excess grease, never leave
containers with the cut debris inside the stor­
age area.
EN
Allow the engine to cool
15