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18
CUTTING PIECES OF WOOD
When cutting wood follow guidelines for safety of work and do as
follows:
•
Ensure the wood piece cannot be moved.
•
Use clamps to fix short pieces of material before cutting.
•
Cut wood or wood-like materials only.
•
Before cutting ensure the chain saw will not come into contact
with stones or nails, as it could cause pulling the saw out and
damage to the chain.
•
A
void situations when working saw might touch wired fence or
ground.
•
When cutting branches support the saw as much as possible and do
not cut with the tip of the guide bar.
•
Watch out for obstacles such as protruding stumps, roots, hollows
and holes in the ground, as they may be cause of an accident.
FELLING A TREE
Define the tree fall line. Consider wind, lean of the tree, location of
heavy branches, complexity of work after tree fall and other factors.
•
When tidying area around the tree remember to ensure proper
ground grip and escape path to use when the tree falls.
•
Predict and tidy up two escape paths at 45
0
angle, counting from
the line opposite to expected line of the tree fall. There must be no
obstacles on these paths (
fig. M
).
•
M
ake a notch at the side of the fall, one third of the trunk diameter
deep (
fig. N
).
•
M
ake a felling cut at the side opposite to the previously made
felling notch, and a little higher than lower surface of the notch.
•
I
nsert wedges on time to avoid pinching of the saw chain.
•
Fell the tree by driving a wedge rather than cutting through the
whole trunk.
When felling trees observe all safety rules and do as follows:
• When the chain is pinched, switch off the chain saw and
release the chain with a wedge. Wedge should be made of
wood or plastic. Never use steel or cast iron wedge.
• Falling tree may pull other trees.
• Danger zone radius is 2.5 height of the falling tree (fig. M).
• If the operator is inexperienced or amateur it is recommended
to have a training rather than gaining the experience without
supervision.
Do not fell trees when:
• Conditions in danger zone cannot be determined due to fog,
rain, snow or darkness.
• Line of tree felling cannot be determined due to wind or wind
blows.
CUTTING THROUGH TRUNKS
•
Press the bumper spike (
19
) against the material and make a cut
(
fig. O
).
•
I
f the cutting cannot be finished even after the chain saw range is
fully utilized, do as follows:
•
M
ove the guide bar back from the cut material to a certain
distance (with cutting chain still operating) and move the main
handle (
12
) a little down, support the bumper spike (
19
) and finish
the cut by lifting the main handle (
12
) a little.
CUTTING A TRUNK LYING ON THE GROUND
• Always keep good feet and ground grip. Do not stand on the
trunk.
• Watch out for possibility of the trunk rotation.
• Observe manual guidelines related to work safety to avoid
the chain saw recoil.
• Always finish cutting at the side opposite to compressive
stress to avoid pinching the chain in kerf.
•
Before starting to work check the stress direction in the trunk that
is to be cut, to avoid pinching chain of the saw.
•
To eliminate stress, the first cut should be made at the tension side.
•
When cutting a trunk that is lying on the gound, first make a cut
deep 1/3 of the trunk diameter, then turn the trunk over and finish
cutting at the opposite side.
•
When cutting a trunk that is lying on the ground, do not allow to
sink the cutting chain into the ground under the trunk.
N
egligence
may cause immediate damage to the chain.
•
When cutting trunk that is lying on the slope, the operator should
always be at the slope side above the trunk.
CUTTING A TRUNK LIFTED ABOVE THE GROUND
I
n case the log is supported or placed on stable sawing horse,
depending on the place of operation, make the cut 1/3 of the trunk
diameter deep on the side under tension and finish cutting on the
opposite side (
fig. P
and
R
).
TRIMMING / CUTTING BUSHES AND TREE BRANCHES
•
Start cutting branches of a felled tree at its base and continue
towards top of the tree. Do small branches with a single cut.
•
First, check which way the branch bends. Then make a cut from
the inside of the bend and finish cutting on the opposite side. Be
careful, the branch being cut may spring back.
•
When trimming tree branches, always cut downward to enable
free fall of cut branch. However, sometimes undercutting the
branch from the bottom may be helpful (
fig. S
).
•
Be very careful when cutting a branch that may be under stress.
Such branch may spring aside and hit the operator.
Do not cut branches when climbing up the tree. Do not stand on
ladder, platforms, logs or positions that may cause loss of balance
and control over the chain saw. Do not cut above level of your
shoulders. Always hold the chain saw with both hands.
OPERATION AND MAINTENANCE
Ensure the engine is switched off and is cold before cleaning,
checking or repairing the chain saw. Disconnect wire from the
ignition plug to prevent accidental start up of the engine.
STORAGE
•
Empty the fuel system before deciding to store the tool for more
than one month.
•
Drain fuel from the fuel tank, start the engine and allow it to use all
remaining fuel and stop working.
•
Use new fuel each season.
N
ever use any cleaning agents on fuel
tank, it may damage the engine.
•
Pay special attention to keep the ventilation holes of the engine
casing pervious.
•
Clean plastic parts with mild detergent and a sponge.
•
You can proceed with maintenance actions only described within
this instruction manual.
A
ny other action can be carried out only
by authorized service.
•
Do not make any changes in chain saw construction.
•
When not in use, chain saw should be stored clean, on flat surface,
in dry place and beyond reach of children.
When storing it is important to avoid deposition of rubber
particles in basic parts of the fuel system, such as carburettor, fuel
filter, fuel line and fuel tank. Fuels with alcohol additives (ethanol
or methanol) may absorb moisture, and that during storing causes
separation of fuel blend ingredients and formation of acids. Acidic
petrol may damage the engine.
AIR FILTER
Dirty air filter reduces efficiency of combustion engine and causes
increase of fuel consumption. Clean the air filter after each 5 hours
of the saw operation.
•
Clean the air filter lid (
4
) and its surroundings, so the dirt does not
get into carburettor chamber after the lid is removed.
•
Unscrew knob for air filter lid (
3
) and remove air filter lid (
4
).
•
Remove air filter (
d
) (
fig. T
).
•
Use water with soap to clean the filter, wash with clean water and
dry thoroughly.
