Ikra KSB 4945, Operating Instructions Manual

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GB-7
To turn the chainsaw off, press the current button by
turning it to Stop.
Setting the carburettor
The carburettor setting is done by the manufacturer on
each machine produced. Check that the filter is clean
and correctly mounted. The throttle adjustment screw is
set so that the cutting tool is stationary when the motor
is running idle. If the cutting tool is not stationery when
the motor is running idle, turn the throttle adjusting screw
anticlockwise (fig. 10, ref. T), until the tool is stationary.
In this situation, the motor should remain on in any case
and run regularly.
Should other adjustments be necessary on the
machine, we warmly recommend addressing you
retailer or an authorised repair shop.
Sharpening andservicing the chain
WARNING Always use protective gloves to
perform the operations described below. Risk of
serious injury!
A correctly sharpened chain allows you to work more
accurately and efficiently, at the same time reducing
the physical effort required. Only use high quality bars
and chains in good condition. Cutting tools which are
not kept correctly serviced are inefficient and a source
of danger. The chain is sharpened using specific special
files (round) for each type of chain. Always check the type
of chain (pitch) fitted on your chain saw.
WARNING When replacing the chain of your chain saw
request one with the same pitch specifications as the one
provided standard!!! Chains with different pitches may be
fitted (if permitted by the manufacturer) only by changing
the bar and clutch housing holding the chain sprocket.
Fitting chains with different pitches is dangerous and
causes irreparable damage to the cutting instrument.
WARNING When replacing the chain, check the condition
of the guide bar. Do not work with worn bars or uneven
seats. Check the state of wear
WARNING When fitting a new chain run in by allowing
the saw to run idle for about 3 minutes. Subsequently,
check and adjust the chain tension
WARNING During work, in addition to losing its cutting
capacity, the chain is subject to gradual heating which
causes it to lengthen. Check chain tension often.
DO NOT work with loose chains!! This is a source of
danger as the chain could come off its seat on the
bar.
Sharpening
If you wish to sharpen your chain personally, you must
purchase the specific instruments from your dealer.
These are required to perform the operations described
below correctly.
For accurate and efficient sharpening contact your dealer.
• If required, tighten the chain as described above
(see: Preparing the chain saw).
• Fix the bar of the chain saw (bar and chain fitted) in a
vice so that the chain can run freely (fig. 11).
• Fit the file into the specific file holder.
• Then fit the file into the tooth of the chain keeping it at
a constant angle (following the edge of the tooth).
• Sharpen by filing exclusively with a (forward) move-
ment and removing all chips from the cutting tooth.
(In this phase it is advisable to take note of the
number of strokes performed with the file as these
must be repeated for subsequent teeth).
NB. Bear in mind that both the teeth on the right and
those on the left must be sharpened. First sharpen
one side and then (after turning the chain saw) the
other.
Warning : after wear on the cutting teeth and
subsequent sharpening the delimiting tooth in front
of the cutting tooth is higher than the latter. Use the
specific depth gauge to assess this situation, which
must be corrected. This is performed using a normal
flat file, removing the part of the delimiting tooth that
protrudes from the depth gauge (fig. 11).
WARNING When the length of the cutting tooth is in
the region of 5 mm the chain MUST be replaced.
The chain must also be replaced when the play of the
links on the connection rivets becomes excessive.
After sharpening, check chain movement. This must
move freely with a force exerted normally by hand
(USE GLOVES).
For deeper and more accurate sharpening use a
specific electric sharpener.
This operation can be performed at your dealer’s.
This useful work tool can also be purchased from an
authorized sales point.
Bar maintenance
(fig.12)
The guide bars also deteriorate through use and require
maintenance.
The following operations should be performed at regular
intervals:
• rotate the bar to obtain gradual and even wear on
both sides;
• grease the bearings of the wheel on the tip of the
bar using the special syringe (through the holes
provided). (This operation is not required on bars
without a wheel);
• clean the chain groove of the guide and the holes
for supplying lubricating oil (use the special scraper
found on the depth gauge);
• use a flat file to remove chips from the sides of the
grooves in which the chain runs, as these chips can
detach and damage the bar;
• even out any difference in level between the grooves
in which the chain runs using a flat file and then
smoothing them with fine grained sandpaper.
WARNING The bar must be replaced before the
depth of the groove in which the driving links of the
chain run falls below the height of these driving links.
The links MUST NEVER touch the bottom of the
groove in which they run.