Stiga SHJ 550 Manuel D'utilisation page 29

MAINTENANCE AND PRESERVATION
Adjustment of the distance between blades is
not necessary, as this is predetermined by the
manufacturer.
Cleaning of debris from the inner grooves must
be done regularly, as this could impede the bla-
des from turning correctly.
Proceed with cleaning (Fig. 11):
– Loosen the nuts (1), remove the screws (2) and
the bar (3).
– Carefully remove any dust or debris from the
slots (4).
– Lubricate the internal surfaces of the blades.
– Remount the bar (3) with the screws (2), taking
care to reposition the spacers accurately (5)
and the washers (6) and (7) under the nuts (1).
– Fully tighten the nuts (1).
WARNING!
nuts (1) are tightened as far as possible be-
fore starting work.
SHARPENING THE BLADES
It is necessary to sharpen the blades when the
trimming performance decreases and the
branches tend to stick together.
WARNING!
repair a blade which has blunt cutting edges
IMPORTANT
your machine to your Retailer for sharpening as
he has the required tools and suitable experi-
ence.
In order to sharpen the blades, it is recommend-
ed to use a fine grain file and proceed as follows
(Fig. 12):
– Place the file (1) on the blade (2) at a 45° angle,
and proceed with upward strokes towards the
cutting edge.
– Make sure that you put pressure on the file
only when stroking upwards and raise it from
the blade when you move it back towards you.
– Only remove a smallest amount of material.
– Eliminate any burr with a grinding stone.
– Eliminate all grinding traces and lubricate the
blades before reassembling them.
Always check that the
Always replace and never
We recommend you take
EXTRAORDINARY INTERVENTIONS
All maintenance operations not foreseen in this
manual must be performed exclusively by your
Retailer.
All and any operations performed in unautho-
rised centres or by unqualified persons will total-
ly invalidate the warranty.
PRESERVATION
After each working session, carefully clean the
machine from dust and debris, repair or replace
any faulty parts and lubricate the blades to pre-
vent them from rusting.
The machine must be preserved in a dry area,
protected from all weather conditions and with
the blade protection device correctly fitted.
PROLONGED IDLE PERIODS
IMPORTANT
used for a period of more than 2-3 months it is
recommended to follow some advice to avoid
difficulty when you wish to use the machine and
to prevent permanent damage to the engine.
• Storage
Before storing the machine:
– Empty the fuel tank.
– Start the engine and allow it to tick over until it
comes to a halt, so that it uses all the fuel that
is left in the carburettor.
– Allow the engine to cool down and remove the
spark plug.
– Pour a a teaspoon of (new) 2-stroke engine oil
into the spark plug slot.
– Pull the starter wire a couple of times to dis-
tribuite the oil in the cylinder.
– Replace the spark plug with the piston in the
dead end upper position (visibile from the
spark plug slot when the piston is at maximum
stroke).
• Restarting work
When you wish to start using the machine again:
– Remove the spark plug.
– Pull the starter wire a couple of times to elim-
inate all excess oil.
– Check the spark plug as described in chapter
"Checking the spark plug".
– Prepare the machine as indicated in the para-
graph entitled "Preparing for work".
EN
If the machine will not be
11