Preparing To Work; Checking The Machine - Stiga SBC 425 H Manuel D'utilisation

knife, must always be fitted.
c) Disassembly
- Insert the supplied wrench (3) in the specific
hole of the inner ring-nut, then turn the ring-nut
by hand and push the wrench (3) until it enters
the hole of the angle transmission (2), block-
ing rotation.
– Remove the cutting line head (4) unscrewing
it clockwise.

2. PREPARING TO WORK

2.1 CHECKING THE MACHINE

Before starting work please:
– check that all the screws on the machine and
the cutting device are tightly fastened;
– check that the cutting device is undamaged
and that the 3 or 4-point metal blades (if fitted)
are properly sharpened;
– check that the air filter is clean;
– check that the guards are suited to the cutting
device being used, properly fastened and ef-
ficient;
– check the handgrips are well fastened.
2.2 FUELS AND OILS
This machine is fitted with a four-stroke engine
which DOES NOT require oil to be added to the
petrol.
IMPORTANT Adding oil to the petrol damages
the engine and will cause invalidation of the war-
ranty.
IMPORTANT Only use quality fuels and oils to
maintain high performance and guarantee the du-
ration of the mechanical parts over time.
2.2.1 Petrol characteristics
Only use unleaded petrol with a fuel grade of at
least 90 N.O.
IMPORTANT Unleaded petrol tends to create de-
posits in the container if preserved for more than 2
months. Always use fresh petrol!
DANGER! Petrol is flammable!
– Keep the petrol in homologated fuel con-
tainers, in safe place, away from any flames
or heat sources.
– Never leave the containers within the reach
of children.
2.2.2 Oil characteristics
Only use top quality oil specifically for four-
stroke engines, highly detergent, with classifica-
tion SF-SG and viscosity SAE10W30.
IMPORTANT The use of a non-detergent or
inadequate oil or one with different features to
those indicated will damage the motor and will
cause invalidation of the warranty
Your dealer can provide you with oils which have
been specifically developed for this type of en-
gine, and which are capable of guaranteeing a
high level of protection and extend the efficiency
of the engine.
2.3 REFUELLING
DANGER! Never smoke whilst refuelling
and avoid inhaling the petrol fumes.
WARNING! Carefully open the tank top
as pressure could have formed inside.
Before refuelling:
– Place the machine on a flat stable surface,
with the fuel tank cap facing upwards.
– Clean the fuel tank cap and the surrounding
area to avoid any dirt from entering the tank
during refilling.
– Carefully open the fuel tank cap to allow the
pressure inside to decrease gradually. Use a
funnel to refill and avoid filling the tank to the
brim.
WARNING! Always close the fuel tank
cap firmly.
WARNING!
of petrol which may have dripped on the ma-
chine or the ground and do not start the en-
gine until the petrol fumes have dissipated.
2.4 OIL TOPPING UP (Fig. 6)
IMPORTANT Do not start the engine and do not
use the machine if the oil level is low.
To check the oil level:
14
Immediately clean all tra ces