Stiga SHJ 550 Manuel D'utilisation page 28

10
EN
7. MAINTENANCE AND PRESERVATION
Correct maintenance is essential to maintain the
original efficency and safety of the machine over
time.
WARNING!
rations:
– remove the spark plug cap.
– Wait until the engine is sufficiently cold.
– Use protective gloves when handling the
blades.
– Keep the blade protection devices on,
except when intervening directly on the
blade.
– Never dispose of oils, fuel or other polluting
materials in unauthorised places
CLEANING THE ENGINE AND THE SILENCER
To reduce fire risks, periodically clean the cylin-
der flaps with compressed air and clear the si-
lencer area from branches, leaves or other de-
bris.
CLEANING THE AIR FILTER
IMPORTANT
sential to guarantee the efficiency and duration
of the machine.
It must be cleaned after every 8-10 working
hours.
To clean the filter (Fig. 8):
– Loosen the knob (1) remove the cover (2) and
the filter element (3).
– Wash the filter element (3) with soap and wa-
ter. Do not use petrol or other solvents.
– Leave the filter to dry in the open air.
– Replace the filter element (3) and the cover (2)
and tighten the knob (1).
FUEL FILTER
Inside the fuel tank there is a filter which pre-
vents impurities from entering the engine.
The filter should be replaced once a year by your
Retailer.
During maintenance ope-
Cleaning the air filter is es-
MAINTENANCE AND PRESERVATION
CHECKING THE SPARK PLUG
Periodically, remove and clean the spark plug
from any eventual deposits using a metal brush.
Check and reset the correct distance between
the electrodes (Fig. 9).
Replace the spark plug and fasten it firmly using
the supplied key.
The spark plug must be replaced with one with
the same characteristics in the cases where the
electrodes have burnt or the insulation has worn
out, and in any case every 50 working hours.
TUNING THE CARBURETTOR
The carburettor is tuned by the manufacturer to
achieve maximum performance in all situations
of use, with a minimum emission of toxic gas in
compliance with current specifications.
In the case of poor performance, first check that
the blades are not partially blocked or deformed,
on the contrary ask your Retailer to check the
carburettor and the engine.
• Tuning minimum speed
WARNING!
not move when the engine is running idle. If
the cutting device moves when the engine is
running idle, contact your dealer to correctly
regulate the engine.
LUBRICATING THE REDUCTION GEAR
(Fig. 10)
Every 20 working hours, top up the level with
special molybdenum bisulphur lubrication, injec-
ting it into the lubricator (1).
BLADE CLEANING AND CHECK
WARNING!
the blades are not bent or deformed and that
the screws are adequately tightened.
The cutting device must
Periodically check that