O.S. Engines FS-40S - Manual (Page 16)

STARTING THE ENGINE
Preparations
1 Installing the glowplug
Install the washer on the
glowplug and screw carefully
into cylinder-head, making sure
that it is not cross-threaded
before tightening firmly.
Washer
Glow plug
2 Installing the propeller
There is a risk, particularly with four-stroke engines, of
the propeller flying off if the propeller nut loosens due
to detonation or "knocking" when the engine is run too
lean or under too heavy a load. To prevent this from
happening even if the propeller itself should slip or
loosen, it is recommended to use the special Propeller
Locknut Set (optional extra) with the FS-40S.
Wrench
Tighten the propeller nut
firmly so that compression
is first felt around this
position(i.e. with blades
horizontall) when turning
the propeller in the
direction of arrow.
3 Filling the fuel tank
Re-connect fuel line to
engine after tank is
filled.
Disconnect
fuel line from
the fuel inlet,
and connect
it to the
tubing from
the fuel
pump.
Do not let dirt or
dust enter fuel can.
Fuel (model
glow-plug
engine fuel)
Fuel pump
Use a fuel can filter
(e.g. O.S. Super Filter).
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