ENGLISH - 8
Check that the
chain
is sharpened correctly (See
below), in good working condition and that the
tension is correct. If the
chain
is irregularly worn, or if
the
cutting teeth
are only 3 mm high, the
chain
must
be replaced(fig.3).
Clean the
air vents
regularly to prevent motor
overheating.
Check that the
switch
and
switch block
function
correctly (to be performed with the
chain brake
released): press the
switch
and the
switch block
and
control that they return to idle position as soon as
they are released; control that it is impossible to
press the
switch
without activating the
switch block
.
Check that the
chain catcher
and the
right hand
guard
are in correct condition without any visible
faults such as damaged material.
Every 2-3 hours of use
Control the bar condition, if necessary clean the
lubrication holes
(fig.4) and the
guide grooves
(fig.5)
carefully; If the groove is worn or shows signs of deep
notching, it must be replaced. Turn the bar to ensure
even wear(fig.6). Clean the
pinion
regularly and check
that it has not been subject to excess wear(fig.7).
Lubricate the
nose sprocket
with bearing grease
through the hole shown in the illustration (fig.8).
Chain sharpening (When necessary)
If the
chain
does not cut correctly, or requires hard
bar
pressure against the wood, and if the sawdust is
very fine, this is a sign that it is not sharpened
correctly. If the cutting action produces no sawdust,
this means the cutting edge has been worn
completely and the chain is pulverising the wood
during cutting. A well-sharpened chain crosses
through the wood without effort or pressure and
produces large long wood shavings.
The cutting side of the chain is composed of the
cutting
link
(fig.9) with a
cutting tooth
(fig.10) and a
cutting limit
gauge
(fig.11). The difference between these determines
the cutting depth; a file guide and a 4mm diameter round
file are needed to obtain good sharpening results; Follow
the instructions below: Once the
chain
has been
mounted and the tension is correctly adjusted, and the
chain brake is
activated, position the file guide
perpendicular to
the bar
as shown in the
illustration(fig.12), filing the
cutting teeth
at the angle
shown(fig.13), always working from the interior towards
the exterior, lessening the pressure during the return
stage (it is very important to follow the instructions
perfectly: excessive or insufficient sharpening angles, or
an incorrect file diameter will increase the risk of
kickback.) To obtain higher precision on side angles, it is
advisable to position the file so that it exceeds the upper
cutter by about 0.5 mm. File all the teeth on one side first,
then turn the machine over and repeat the operation.
Make sure that after sharpening operations, all teeth are
the same length and that the height of the
depth gauge
is
0.6 mm lower than the upper cutter: check the height
using a proper template and file (with a flat file) all
protruding parts, rounding off the front part of the
depth
gauge
(fig.14), paying attention to not file the
kickback
protection tooth
(fig.15)
Every 30 hours use.
Take the machine to the Authorised Service Centre
for general revision and control check on brake
components.
PERIODS OF PROLONGED DISUSE
Always empty the fuel tank with the same precautions
used in filling it.
H. CUTTING TECHNIQUES
1,2,3,4,5,6,7,8,9,10,11,12,13,14
When using the machine, prevent:
(fig.1)
- cutting in conditions where the trunk could split
during cutting (wood under pressure, dry dead trees,
etc): sudden splitting can be very dangerous.
- the bar or the chain from becoming blocked in the
cutting notch: if this should occur, disconnect the
machine from the main electricity supply and try to
raise the trunk using an appropriate tool as a lever; do
not attempt to free the machine by shaking or pulling
as this could cause damage or injury.
- situations that can lead to kickback reactions.
During machine use:
(fig.1)
- When cutting on sloping ground, always work uphill
of the trunk to avoid being hit if the trunk should roll
downhill.
- Release the switch after each cutting action:
prolonged dry running of the motor will provoke
serious damage.
- When felling trees, always finish the job: a partially
cut tree could break and fall.
