Fuel Handling - McCulloch CS 330 Manual De Instrucciones

FUEL
Note! The machine is equipped with a two-
stroke engine and must always be run using a
mixture of petrol and two-stroke oil. It is import-
ant to accurately measure the amount of oil to
be mixed to ensure that the correct mixture is
obtained. When mixing small amounts of fuel,
even small inaccuracies can drastically affect
the ratio of the mixture.
WARNING:
adequate ventilation when handling fuel.
PETROL
S Use good quality unleaded or leaded petrol.
S The lowest recommended octane grade is
90 (RON).
S If you run the engine on a lower octane grade
than 90 so-called knocking can occur. This
gives rise to a high engine temperature and
increased bearing load, which can result in
serious engine damage.
S When working with continuous high revs
(e.g. limbing) a higher octane is recommen-
ded.
Running-in
AvoId running at a too high speed for extended
periods during the first 10 hours.
TWO-STROKE OIL
S For best results and performance use Uni-
versal, Universal powered by McCulloch
two-stroke engine oil, which is specially for-
mulated for our air cooled two-stroke en-
gines.
S Never use two-stroke oil intended for water-
cooled engines, sometimes referred to as
outboard oil (rated TCW).
S Never use oil intended for four-stroke en-
gines.
S A poor oil quality and/or too high oil/fuel ratio
may jeopardise function and decrease the
lifetme of catalytic converters.
MIXING RATIO
1:50 (2%) with Universal, Universal powered by
McCulloch two-stroke oil.
1:33 (3%) with oils class JASO FB or ISO EGB
formulated for air-cooled, two-stroke engines.
Petrol, litre Two-Stroke Oil, litre
2% (1:50)
5
10
15
20

FUEL HANDLING

Always ensure there is
3% (1:33)
0,10 0,15
0,20 0,30
0,30 0,45
0,40 0,60
MIXING
S Always mix the petrol and oil in a clean con-
tainer intended for fuel.
S Always start by filling half the amount of the
petrol to be used. Then add the entire
amount of oil. Mix (shake) the fuel mixture.
Add the remaining amount of petrol.
S Mix (shake) the fuel mixture thoroughly be-
fore filling the machine's fuel tank.
S Do not mix more than one month's supply of
fuel at a time.
S If the machine is not used for some time the
fuel tank should be emptied and cleaned.
CHAIN OIL
S We recommend the use of special oil (chain
oil) with good adhesion characteristics.
S Never use waste oil. This results in damage
to the oil pump, the bar and the chain.
S It is important to use oil of the right grade
(suitable viscosity range) to suit the air tem-
perature.
S In temperatures below 0°C (32°F) some oils
become too viscous. This can overload the
oil pump and result in damage to the oil pump
components.
S Contact your service dealer when choosing
chain oil.
FUELING
WARNING:
cautions will lessen the risk of fire: do not
smoke and do not place any hot objects in the
vicinity of fuel; always stop the engine and let it
cool for a few minutes before refueling; when
refueling, open the fuel cap slowly so that any
excess pressure is released gently; tighten the
fuel cap carefully after refueling; always move
the machine away from the refueling area and
source before starting.
Clean the area around the fuel cap. Clean the
fuel and chain oil tanks regularly. The fuel filter
must be replaced at least once a year. Contam-
ination in the tanks causes malfunction. Make
sure the fuel is well mixed by shaking the con-
tainer before refuelling. The capacities of the
chain oil tank and fuel tank are carefully
matched. You should therefore always fill the
chain oil tank and fuel tank at the same time.
WARNING:
highly flammable. Take care when handling
fuel and chain oil. Be aware of the risks of fire,
explosion and those associated with inhala-
tion.
Taking the following pre-
Fuel and fuel vapour are