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FUEL
The MINI 2 PLUS engine is designed to operate with a gasoline/oil mixture.
We recommend using a semi-synthetic oil (for example, BARDAHL with API TC
specification) that, although inferior to a pure synthetic, remains mixed with
gasoline in the tank for a longer period. It grants good lubrication and longer life to
engine components.
During the running-in stage, use an oil percentage of 3,5% and then move to 3%
once the stage has been completed.
The gasoline must have an octane number not lower than 95, in order to avoid pre-
ignition phenomena.
Carefully mix the fuel oil in a tank is appropriate and it is better, once mixed, to use
it within one week. Do not use vegetable or animal oil.
DO NOT MIX DIFFERENT TYPES OF OIL. We do never recommend using Castrol TTS
Oil. None guarantees by using this oil will be applied.
CARBURETOR
The carburetor Walbro WB37, if used properly, provides excellent performance
requiring few tuning interventions. However, changes in weather conditions,
altitude and a possible change of the propeller (both in size and in pitch) can affect
its functioning.
The carburetor is adjusted during the testing phase with a standard setting
• Screw H "affects the entire range of use of the engine”. From completely
tightened, loosen by 1 + ¼ turn or 450°.
• Screw L “only has as effect at a low engine speed”. From completely tightened,
loosen by ¾ turn or "270 °".
Since the first test is performed at an altitude of 600 m above sea level, you may
need to depart from this setting without the adjustments exceed the limit:
• screw-H do not fall below a round "360 °"
• Screw L do not fall below ½ turn "180 °"
The carburetor is equipped with a depression pump to remove fuel from the tank,
but do not exceed the height difference between them as it has not exceed to 50-
60cm. The same applies to the tube: do not exceed 50-60cm.
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