O.S. Engines FS81-a - Manual (Page 13)

24
STARTING
The FS -81-P is not equipped with manual
choke controls, as it is intended for use
with an electric starter only.
A high-torque electric starter not only
makes starting the engine easier, it
dispenses with the need for a choke valve
by turning the engine over fast enough to
draw fuel to the cylinder automatically.
Starting procedure is as follows:
Fill the fuel tank with fuel. When filled,
prevent fuel flowing into the carburetor with
a commercially available fuel stopper, etc.
Release the stopper before starting the
engine. 1.
Glow Plug Igniter
Pliers
Element glows when energized.
Replace the plug when the
element does not glow or is
burnt out.
WARNING
When checking the plug element hold the
plug with tools, such as pliers, etc.
Do not hold near your face or the fuel
remaining in the filament may burn you.
Make sure that the plug element glows red,
and install the plug in the cylinder head.
NOTE
Check that the current to the glowplug is
switched off. 2.
25
To close the needle-valve, turn it clockwise,
while to open the needle-valve, turn it
counter-clockwise. Turn the needle-valve
clockwise slowly until it stops. This is the
fully closed position. 3.
Open the needle-valve 1.5-2 turns from the
fully closed position and set the throttle in the
fully open position. 4.
Apply the starter and press the starter switch
for 5-6 seconds, or until fuel is seen to
emerge from the exhaust outlet, indicating
that the cylinder is now primed.
Energize the glowplug and apply the starter.
If the starter fails to rotate the engine
completely, this may be due to the cylinder
being over-primed, or to the starter battery
being insufficiently charged.
Turn the prop “backwards” (clockwise) by
hand until it is against compression. This is
to enable the kinetic energy of the prop to
subsequently assist the starter through the
compression stroke to start the engine.
5.
6.
7.
Mark
Close
Open
Fully closed
position Fully opened
position
Fully closed
position
8.
Set the throttle in the 1/4 open position.