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O.S. engine FL-70 - Pre-Start Preparations; Essential Starting Components

O.S. engine FL-70
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Items necessary for starting
GLOW PLUG
O.S. Type F glowplug is installed in the
engine.
GLOWPLUG IGNITER
Commercialy available handy
glowplug heater in which the
glowplug battery and battery
leads are integrated.
FUEL PUMP
Alternatively, one of the
purpose-made manual or
electric fuel pumps may be used
to transfer fuel directly from your
fuel container to the fuel tank.
FUEL
The FL-70 should be operated on a methanol
based fuel containing not less than 20%
(volumetric) castor oil, or a top quality synthetic
lubricant (or a mixture of both), plus a small
percentage (5-15%) of nitromethane for improved
flexibility and power. (The carburetor is adjusted at
the factory for a fuel containing 20% lubricant and
15% nitromethane.) Some commercial fuels also
contain coloring additives as an aid to fuel level
visibility. In some cases, these additives have
indicated slightly negative effects o performance.
We would suggest that you use such fuels only if
you are satisfied that they do not adversely affect
running qualities when compared with familiar
standard fuels. When changing to a fuel brand or
formula that is different from the one
to which you are accustomed, it is a
wise precaution to temporarily revert
to in-flight running-in procedures,
until you are sure that the engine is
running entirely satisfactorily.
BEFORE STARTING
Tools, accessories, etc.The following items are
necessary for operating the engine.
10

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