O.S. Engines FS81-a - Manual (Page 7)

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A fuel tank of approximately
320cc capacity is suggested.
This allows around 14 minutes flying time,
dependent upon the type of fuel used, the size
of propeller and on the amount of full-throttle to
part-throttle operation throughout the flight.
Fuel Tank
GLOW PLUG
O.S. Type F glowplug is supplied with the engine.
GLOWPLUG IGNITER
Commercialy available handy
glowplug heater in which the
glowplug battery and battery leads are integrated.
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 PUMP
Manual Electric
Electric Starter and
Starter Battery
Required when starting
the engine.
12-Volt lead-acid battery
Electric
Starter
Install a filter on the outlet tube of your
refueling container to prevent entry of
foreign matter into fuel tank. O.S. ‘Super Filters’
(large and small) are available as optional extras.
O.S. Super Filter (Fuel Can Filter)
To prevent the pickup from adhering to
the tank wall under suction and restricting
fuel flow, slots may be filed in the end of
the weight. Alternatively, an O.S. Non-
Bubble Weight is available as an optional
extra.
O.S. Non-Bubble Weight
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It is recommended to install a good
in-line filter between the fuel tank and
carburetor to prevent entry of foreign matter
into the carburetor.
Fuel Filter
SILICONE FUEL LINE
Heatproof silicone tubing of approx.
5mm o.d. and 2mm i.d. is required for the
connection between the fuel tank and engine.
8mm
TOOLS
HEX Screwdriver
SCREWDRIVER
Necessary for engine installation.
1.5mm, 2.5mm
Necessary for carburetor adjustments.
Phillips Screwdriver
No.2, etc.
Socket Screwdriver
5mm, 5.5mm, 7mm
LONG SOCKET WRENCH WITH PLUG GRIP
Recommended for easy removal and
replacement of the angled and recessed
glowplug, the O.S.Long Socket Wrench
incorporates a special grip.
End Wrenches
12-14mm, etc.
Needle Nose Pliers