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Stiga SPR 255 Manual

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H) CHAIN-SAW OPERATING TECHNIQUES
Always observe the safety regulations and use the most 
suitable sawing techniques.
J) RECOMMENDATION
FOR THE FIRST-TIME USERS
Before felling or delimbing for the rst time, make sure:
–   you have been specically trained to use this type of 
equipment;
–   you have carefully read the safety regulations and user 
instructions contained in this manual;
–   you practise rst on logs on the ground or attached to 
trestles, in order to get familiar with the machine and the
most suitable cutting techniques.
K) HOW TO READ THE MANUAL
Certain paragraphs in the manual contain particularly sig-
nicant information and are marked with various levels of 
highlighting with the following meaning:
NOTE
or
IMPORTANT
These give details or further infor-
mation on what has already been indicated, and aim to
prevent both damage to the machine, and the machine
from causing damage.
WARNING!
Non-observance will re sult in
the risk of injury to oneself or others.
DANGER!
Non-observance will re sult in
the risk of serious injury or death to oneself or oth-
ers.
3.1 WORKING WITH TREE SERVICE CHAIN-SAWS
FROM A ROPE AND HARNESS
This chapter sets out working practices to re du ce the risk 
of injury  from  tree  service  chainsaws  when  working at 
height from a rope and harness.
While it may form the basis of guidance and trai ning litera-
ture, it should not be regarded as a sub stitute for formal
training.
General requirements working at height
Operators of tree  service  chainsaws  working  at  height 
from a rope and harness should never work alone. 
A competent ground worker trained in appro pria te emer-
gency procedures should assist them.
Operators of tree service chainsaws for this work should 
be trained in general safe climbing and work positioning 
techniques and shall properly e quipped with harnesses,  
ropes, strops, karabiners and other equipment for main-
taining se cu  re and safe working positions for both them-
selves and the saw.
Preparing to use the saw in the tree
The chainsaw should checked, fuelled, 
started and warmed up by the ground 
worker before it is sent up to the opera-
tor in the tree.
The chainsaw  should  be  tted with a 
suitable strop for atta ching to the op-
erator’s harness:
a)   choke  the  strop  around 
the attachment point on
the rear of the saw (A);
b)   provide suitable karabiners to  allow  indirect  (i.e.  via 
the strop) and direct attachment (i.e. at the attachment 
point on the saw) of saw to the operators harness;
c)   ensure the saw is securely attached when it is being 
sent up to the operator;
d)   ensure the saw it secured to the harness before it is 
disconnected from the means of a scent.
The saw should only be attached to the recommended 
attachment points on the harness. These may be at mid-
point (front or rear) or at the sides. 
Where possible attaching the saw to centre rear mid-point
will keep it clear of climbing lines and support its weight 
centrally down the operator’s spine.
When moving the saw from any attachment point to an-
other, operators should ensure it is se cured in the new
position before releasing it from the previous attachment
point.
These can be found on the mi-
dpoint (front  or rear) or  on the si-
des.
When possible, fasten the chain-
saw to the rear central midpoint to
prevent it from interfering with the
climbing  ropes  and  make  sure  it 
supports the operator’s weight in
the middle, toward the bottom of
the operator’s spinal cord.
When moving the chain-saw from one fastening point to
another, it is advisable that operators are sure they are 
fastened to a new position before unfastening from the
previous fastening point.
Using the chainsaw in the tree
An analysis of accidents with these saws during tree serv-
ice operations shows the primary cause as being inappro-
priate one-handed use of the saw. In the vast majority of 
accidents, operators fail to adopt a secure work position 
witch allows them to hold both handles of the saw.
SAFETY REQUIREMENTS 7
EN
… 33 …


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