36
with.
General rules
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An operator who works on a high position on a tree with the aid of ropes and slings must
never be on his own, but must be assisted on the ground by a second, experienced
operator, able to handle emergencies.
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The operator must be trained to safely climb trees, to use a working technique suitable for
jobs carried out at heights and must be equipped with suitable safety sling, ropes and
snap-shackles, and any other items required to ensure a stable and safe working position
for himself and the chain saw.
Preliminaty operations when using the chain saw on a tree
1) The chain saw must be checked, refuelled, oiled, started and heated by the second operator
on the ground, then the engine must be switched off before lifting the chain saw on the tree.
2) The chain saw must be fixed with a snap-shackle to the operator’s sling by means of a rope
(fig.13).
3) The chain saw must be anchored to the connection point (fig.12 item1) by means of a rope.
4) The sling rope extends beyond the snap-shackle all the way to the lifting rope on the ground.
5) Make sure that the chain saw is fixed to the sling before detaching it from the lifting rope.
Fig 13 shows how to latch on the chain saw to the operator’s sling.
6) By latching the chain saw onto the sling, the occurrence of damages to the chain saw when
moving on the tree is reduced.
Always switch the engine off before latching the chain saw to the sling.
7) Latch the chain saw onto the sling by using the hooks provided on the sling, such as on the
sides; when climbing the tree, it is advisable to latch it onto the rear middle hook to be less
cumbersome for the operator (see fig.14).
8) To move the chain saw from one hook to another, check that it is firmly latched onto the new
position before unlatching it from the previous position.
Using the chain saw on a tree
When the accidents caused by using this type of chain saw on trees are analysed, the causes
are identified with working with one hand only; this technique increases the risks and injuries
caused by:
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incorrectly held chain saw in the event of a kickback;
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inadequate control of the chain saw, which may come into contact with the ropes and with
the operator’s body (left hand and arm);
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loss of chain saw control caused by an unsafe working position and the ensuing contact
with the chain saw (unforeseen movement when using the chain saw).
Ensure a safe working position by operating the chain saw with 2 hands
In order to hold the chain saw with both hands, as a general rule, the operator must try to find a
safe position to use the chain saw:
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at hip level for horizontal cuts;
Summary of Contents for LE32254-25A
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