Spark PROFESSIONAL TV 3840 Mode D'emploi page 13

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  • FRANÇAIS, page 37
(F) of sufficient width and strength. The notch should
be wide enough to direct the fall of the tree for as long
as possible.
WARNING: Never walk in front of a tree
that has been notched.
Make the felling cut (D) from the other side of
the tree and 3–5 cm above the edge of the
notch (C) (Fig. 13).
Fig. 13
Never saw completely through the trunk. Always
leave a hinge (F). The hinge prevents untimely fall of
the tree and guides the tree. If the trunk is completely
cut through, control over the felling direction is lost.
Insert a wedge or felling lever in the cut well before
the tree becomes unstable and starts to move. This
will prevent the guide bar from binding in the felling
cut if you have misjudged the falling direction. Make
sure no bystanders have entered the range of the fall-
ing tree before you push it over.
WARNING: Before making the final
cut, always recheck the area for bystanders,
animals or obstacles.
felling cut:
1. Use wooden or plastic wedges (A) to prevent
binding the bar or chain (B) in the cut. Wedges
also control felling (Fig. 14A).
2. When diameter of wood being cut is greater than
the bar length, make 2 cuts as shown (Fig. 14B).
Fig. 14A
Original instructions
to the hinge, the tree should begin to fall. When
tree begins to fall, remove saw from cut, stop
engine, put chain saw down, and leave area
along retreat path (Fig. 12).
LImbING
Limbing a tree is the process of removing the branch-
es from a fallen tree. Do not remove supporting
limbs (A) until after the log is bucked (cut) into lengths
(Fig. 15).
Branches under tension should be cut from the bot-
tom up to avoid binding the chain saw.
standing on tree trunk.
bUckING
Bucking is cutting a fallen log into lengths. Make sure
you have a good footing and stand uphill of the log
when cutting on sloping ground. If possible, the log
should be supported so that the end to be cut off is not
resting on the ground. If the log is supported at both
ends and you must cut in the middle, make a down-
ward cut halfway through the log and then make the
undercut. This will prevent the log from pinching the
bar and chain. Be careful that the chain does not cut
into the ground when bucking as this causes rapid
dulling of the chain.
When bucking on a slope, always stand on the uphill
side.
1. Log supported along entire length: Cut from top
(over buck), being careful to avoid cutting into the
ground (Fig. 16A).
2. Log supported on 1 end: First, cut from bottom
(under buck) 1/3 diameter of log to avoid splinter-
ing. Second, cut from above (over buck) to meet
Fig. 14B
first cut and avoid pinching (Fig. 16B).
WARNING: As the felling cut gets close
WARNING: Never cut tree limbs while
Fig. 15
Fig. 16B
Fig. 16A
Fig. 16C
11
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