Stiga SP 52 Operator's Manual page 36

12
EN
1. CHECKS DURING WORK
• Checking the chain tension
The chain tends to stretch gradually as you work,
so you need to check its tension frequently.
IMPORTANT
(or after replacing the chain), it must be checked
more frequently due to settling of the chain.
WARNING!
loose, as it can be hazardous if the chain slips
out of its guides.
To adjust the chain tension, follow the instructions
in Chapter 5.5.
• Checking the oil delivery
IMPORTANT
out lubrication! The oil tank may get almost empty
every time the fuel runs out. Make sure you top up
the oil tank every time you refuel the chain-saw.
WARNING!
chain are in place when you check the oil de-
livery.
Start the engine, keep it running at medium power
and check if the chain oil is delivered as shown in
the figure (Fig. 12).
Only for mod. 46 and 52
You can adjust the chain oil flow using a screw-
driver on the adjuster screw (1) of the oiler, which
is on the bottom of the machine (Fig. 12).
2. DIRECTIONS FOR USE AND CUTTING
TECHNIQUES
Before felling or delimbing for the first time, practise
sawing logs on the ground or on trestles, so that
you can get familiar with the machine and the most
suitable sawing techniques.
During the first period of use
Never work with the chain
Never use the machine with-
Make sure the bar and the
WARNING!
chine must always be firmly held in both
hands, with the right hand on the front hand-
grip and the left hand on the rear handgrip,
even if the operator is left-handed.
WARNING!
ately if the chain stops during sawing. Be-
ware of kickback, which can occur if the bar
contacts an obstacle.
• Delimbing (Fig. 13)
WARNING!
ing or nobody in the area where the branches
will fall.
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° an-
gle 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
pulling out the bar, until the tree falls.
7. In particular or unstable conditions, you can
complete felling by inserting wedges (2) on the
USING THE MACHINE
When running, the ma-
Stop the engine immedi-
Make sure there is noth-
When felling on slopes,