Gardena CST 3519-X, Operating Instructions Manual

(fig.1) When using the machine, prevent:  

- 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. 

- using the product above shoulder height

- cutting wood with foreign objects e.g. nails
Never use the machine in earth or stones, this leads to
immediate wear of the chain.

(fig.1) During machine use: 

- When cutting on sloping ground, always work uphill of the
trunk to avoid being hit if the trunk should roll downhill. 

- When felling trees, always finish the job: a partially cut tree
could break and fall. 

- At the end of each cutting operation the user will notice a
considerable change in the strength necessary for controlling
the machine.  Great care must be taken not to loose control.

Below is a description of two different types of cutting
operation: 

Cutting action by pulling the chain (from top to bottom)

(fig.2)

can lead to dangerous sudden movement of the

machine towards the trunk with consequential loss of
control.  Where possible, use the spiked bumper during
cutting operations. 

H. CUTTING TECHNIQUES

G. MAINTENANCE AND STORAGE

Before performing any maintenance or
cleaning, remove the plug from the mains.

ATTENTION!

In cases where work

environments are particularly dirty or dusty, the

operations described must be performed more
frequently than mentioned in the instructions. 

Before each use

Check that the chain oil pump functions correctly:
direct the bar towards a clear surface at a distance
of about 20 centimetres; after the machine has run
for about a minute, the surface should show clear
traces of oil 

(fig.1).

Check that excessive strength is not needed for
activating and deactivating the chain brake.  Also
check that it is not activated too easily and that it is
not blocked.  Then check chain brake function as
follows: release the chain brake, grip the machine
correctly and start up the machine, activate the
chain brake by pushing the front hand guard forward
with the left wrist or arm but without removing the
hand from the handle 

(fig.2)

.  If the chain brake is

working correctly, the chain should be stopped
immediately. 

Check that the chain is sharpened correctly, 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 long, the chain must be replaced

(fig.3)

. 

Clean the air vents regularly to prevent motor
overheating 

(fig 4a, 4b)

.

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
ensure that they return to idle position as soon as
they are released; check 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

Check the bar condition, if necessary clean the lubrication
holes 

(fig.5)

and the guide grooves 

(fig.6)

carefully;  If the

groove is worn or shows signs of deep notching, it must be
replaced.  Clean the drive sprocket 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  

Contact an Authorised Service Centre regarding
any problems with sharpening the chain.

The chain needs to be correctly sharpened.  A
wrongly sharpened chain can cause kickback
and a high risk of injury.

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.13A, 13B)

, 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

Storage/Transport

Allow the product to cool down and place the cover
over the bar and chain.

Store the product in a cool, dry, place and out of reach
of children.  Do not store outdoors.

Ensure the oil does not leak out from the product.

ENGLISH - 7

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