Starting 14 - O.S. engine FS-52S Owner's Instruction Manual

STARTING
The FS-52S is not fitted with a manual choke control,
since it has been designed for use with an electric
starter only.
A high-torque electric starter not only makes starting the
engine much easier, it dispenses with the need for a
choke valve by rotating the engine fast enough to cause
the fuel pump to prime the cylinder automatically.
1. Check that the current to the glowplug is switched
off.
2.
Check that the polarity of the starter battery leads
rotates the engine counter-clockwise when viewed
from the front.
3. Open the needle-valve 2-2.5 turns from the fully
closed position and temporarily set the throttle in the
fully open position.
Apply the starter and press the starter switch for 5-
4.
6 seconds, or until fuel is seen to emerge from the
exhaust outlet, indicating that the cylinder is now
primed.
5.
Close the throttle-arm to within
15-20°of the fully closed
position and slowly turn the
prop "backwards" (clockwise)
by hand approximately 1.5
turns until it is arrested by
compression.This is to enable
the kinetic energy of the prop
to subsequently assist the starter through the
compression stroke to start the engine.
6. 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.
7. Check these conditions and, instead of pressing
the starter button after applying the starter, have
the starter spinning before applying it to the
engine, to give it a "running start".
When the engine starts, slowly open the throttle,
leaving the needle-valve at its rich starting setting
to promote cool running conditions.
However, if the engine slows down because the
mixture is excessively rich, the needle-valve may
be closed a little to speed it up until it runs evenly.
14
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1/4 Starting position