Preparing To Work - ST A 3700 Manual De Instrucciones

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PREPARING TO WORK

5. PREPARING TO WORK
CHECKING THE MACHINE
Before starting work please:
– check that all the screws on the machine and
the bar are tightly fastened;
– check that the chain is sharp and there are no
signs of any damage;
– check that the air filter is clean;
– check that the protection devices are well fas-
tened and working efciently;
– check that the handgrips are well fastened;
– check that the chain brake is working efciently.
PREPARING THE FUEL
This machine is fitted with a two-stroke engine
which requires a mixture of petrol and lubricating
oil.
IMPORTANT
age the motor and will cause for invalidation of the
warranty.
IMPORTANT
oils to maintain high performance and guarantee
the duration of the mechanical parts over time.
• Petrol characteristics
Only use unleaded petrol with a fuel grade of at
least 90 N.O.
IMPORTANT
create deposits in the container if preserved for
more than 2 months. Always use fresh petrol!
• Oil characteristics
Only use top quality synthetic oil specifically for
two-stroke engines.
Your dealer can provide you with oils which
have been specifically developed for this type of
engine, and which are capable of guaranteeing a
high level of protection.
The use of these oils makes it possible to prepare
a 2% mixture, consisting in 1 part oil to 50 parts
petrol.
Using petrol alone will dam-
Only use quality fuels and
Unleaded petrol tends to
• Preparation and preservation of the fuel
mixture
DANGER!
Petrol and the fuel mixture are highly inflam-
mable!
– Keep the petrol and fuel mixture in homolo-
gated fuel containers, in safe place, away
from any flames or heat sources.
– Never leave the containers within the reach
of children.
– Never smoke whilst preparing the mixture
and avoid inhaling the petrol fumes.
The chart indicates the amount of petrol and oil to
use to prepare the fuel mixture according to the
type of oil used.
Petrol
litres
1
2
3
5
10
To prepare the fuel mixture:
– Place about half the amount of petrol in a
homologated tank
– Add all the oil, according to the chart.
– Add the rest of the petrol.
– Close the top and shake well.
IMPORTANT
age. Do not prepare excessive amounts of the
fuel mixture to avoid deposits from forming.
IMPORTANT
mixture containers separate and easily identifi-
able to avoid the mistake of using one in place of
the other.
IMPORTANT
and fuel mixture containers to remove any even-
tual deposits.
EN
Synthetic oil 2-stroke
litres
cm
0,02
20
0,04
40
0,06
60
0,10
100
0,20
200
The fuel mixture tends to
Keep the petrol and fuel
Periodically clean the petrol
7
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A 4000A 4500

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