Fuel Safety; Fuel Handling - McCulloch B33 B Operator's Manual

Fuel safety

Do not start the unit:
! If you have spilt fuel on it. Wipe off the spillage and
allow remaining fuel to evaporate.
! If you have spilt fuel on yourself or your clothes,
change your clothes. Wash any part of your body
that has come in contact with fuel. Use soap and
water.
! If the unit is leaking fuel. Check regularly for leaks
from the fuel cap and fuel lines.
n Transport and storage
! Store and transport the unit and fuel so that there
is no risk of any leakage or fumes coming into
contact with sparks or naked • ames, for example,
from electrical machinery, electric motors, electrical
relays/switches or boilers.
! When storing and transporting fuel always use
approved containers intended for this purpose.
! When storing the unit for long periods the fuel tank
must be emptied. Contact your local petrol station
to • nd out where to dispose of excess fuel.
! Ensure the unit is cleaned and that a complete
service is carried out before long-term storage.
! The transport guard must always be • tted to
the cutting attachment when the unit is being
transported or in storage.
! Secure the unit during transport.
a
WARNING:
Take care when handling fuel.
Bear in mind the risk of • re, explosion and
inhaling fumes.
Fuel
a
WARNING:
Fuel and fuel fumes are highly
in• ammable and can cause serious injury when
inhaled or allowed to Come in contact with the
skin. For this reason observe caution when
handling fuel and make sure there is suf• cient
ventilation.
CAUTION:
The unit is equipped with a two-stroke
engine and must always been run using a mixture of
petrol and two-stroke oil. It is important 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.
n Petrol
CAUTION:
Always use a quality petrol/oil mixture
at least 90 octane (RON). If your unit is equipped with
a catalytic converter (see chapter on Technical data)
always use a good quality unleaded petrol/oil mixture.
Leaded petrol will destroy the catalytic converter.

FUEL HANDLING

! The lowest octane recommended is 90 (RON). 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, which can result in
serious engine damage.
! When working at continuous high revs a higher
octane rating is recommended.
! Ethanol blended fuel (E10 or less) may be used.
Using ethanol blends higher than E10 will create
lean running condition which can cause engine
damage.
n Two-stroke oil
! For best results and performance, use two-stroke
oil that is formulated for air-cooled engines.
! Do not use two-stroke oil intended for water-cooled
engines, sometimes referred to as outboard oil
(rated TCW).
! Do not use oil intended for four-stroke engines.
! A poor oil quality and/or too high oil/fuel ratio may
jeopardise function and decrease the life time of
catalytic converters.
! Mixing ratio is 50:1 (2%).
Gasoline (L)
5
10
15
20
Mixing
! Always mix the petrol and oil in a clean container
intended for fuel.
! Always start by • lling 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.
! Mix (shake) the fuel mixture thoroughly before • lling
the unit's fuel tank.
9
Two-stroke oil (L)
0.125
0.25
0.375
0.5