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FUEL HANDLING
Fuel
•
This engine is certified to operate on unleaded fuel 95+
RON (research octane number) avoid ethanol.
•
Use good quality unleaded gasoline. Engines equipped
with catalytic converters must be run on unleaded fuel
mixtures.
•
The lowest recommended octane grade is RON 95. If you
run the engine on a lower octane grade than RON 95
so called knocking can occur. This gives rise to a high
engine temperature and increased bearing load, which
can result in serious engine damage.
•
When working with continuous high revs (FB grade) a
higher octane is recommended.
Environment fuel
We recommends the use of alkylate fuel or environment
fuel for four-stroke engines blended with two- stroke oil
as set out below. Note that carburettor adjustment may be
necessary when changing the type of fuel (see instructions
under Carburettor).
Running-in
Avoid running at a too high speed for extended periods
during the first 10 hours of operation.
Two-stroke oil
•
For best results and performance use two- stroke oil,
which is specially formulated for our two-stroke engines.
•
Never use two-stroke oil intended for water-cooled
outboard engines, sometimes referred to as outboard
oil.
•
Never use oil intended for four-stroke engines.
Mixing ratio
For all engines: 1:25 (4%)
Petrol (litre)
Two-stroke oil (litre)
4% (1:25)
5 L
0.20 L
10 L
0.40 L
15 L
0.60 L
20 L
0.80 L
Mixing
•
Always mix the fuel and oil in a clean container intended
for fuel.
•
Always start by filling half the amount of the fuel to be
used. Then add the entire amount of oil. Mix (shake) the
fuel mixture. Add the remaining amount of gasoline.
•
Mix (shake) the fuel mixture thoroughly before filling
the chainsaw’s fuel tank.
•
Do not mix more than one month’s supply of fuel at a
time.
•
If the chainsaw will not be used for an extended period
of time, the fuel tank should be emptied and cleaned.
Chain oil
•
We recommend the use of special oil (chain oil) with
good adhesion characteristics.
•
Never use waste oil. This results in damage to the oil
pump, the bar and the chain.
•
It is important to use oil of the right grade (suitable
viscosity range) to suit the air temperature.
•
In temperatures below 0°C, some oils become too
viscous. This can overload the oil pump and result in
damage to the oil pump components.
•
Contact your service agent when choosing chain oil.
WARNING! Always ensure there is adequate
ventilation when handling fuel.
NOTE: The chainsaw is equipped with a two-stroke
engine and must always be run using a mixture of
fuel 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.
BT-CS-40
