O.S. Engines FS-200S-P - Manual (Page 10)

18
NEVER disassemble the fuel pump or pressure regulator.
Their original performance may not be restored after
reassembly.
DO NOT allow foreign matter to enter the fuel system. Dirt
inside the pump or regulator, no matter how small, may
obstruct the flow of fuel and prevent these components
from working properly.
ALWAYS use fuel filters. Keep the fuel tank scrupulously
clean and filter all fuel as it enters the tank (e.g.via an
O.S.'Super-Filter' Code No.72403050) and use a good
quality in-line filter between the tank and pump. Remember
to inspect filter screens at regular intervals and rinse clean
as necessary.
NEVER use gasoline, kerosene, diesel fuel or other
petroleum products for cleaning the pump, regulator or fuel
lines. Silicone-rubber parts will be ruined by these
materials. Use only alcohol (methanol) or glow fuel for
cleansing these items.
CARE OF FUEL PUMP & REGULATOR
DO NOT obstruct the small rectangular hole at the bottom
of the regulator, nor the regulator will not function correctly.
NEVER insert anything into the inlet or outlet nipples in an
attempt to clear a suspected obstruction. (See CARE &
MAINTENANCE section at the back of this booklet.)
When new, 2~3 minutes of running time will be required
for the pump and regulator to begin functioning properly,
During this period you may not be able to get the full
throttle mixture rich enough. In this case, just run the
engine at approx, 3/4 throttle a little longer.
19
The FS-200S-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
prime the cylinder.
Starting procedure is as follows:
Check that the current to the glowplug is switched off.
Check that the polarity of the starter battery leads rotates the
engine counter-clockwise when viewed from the front.
Open the needle-valve 2.5-3 turns from the fully closed
position and set the throttle in the fully open position.
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.
1.
2.
3.
4.
5.
6.
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.
Now disconnect current to the glowplug and gradually
close the needle-valve so that the rpm increases. Make
adjustments to the needle in small steps.
Abrupt changes at this stage are likely to cause the engine
to stall. Restart the engine by simply applying the starter
with the glowplug re-energized and the throttle at its
starting setting. 7.
8.
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.
STARTING
Note:
Make sure that the throttle linkage is made so that the
throttle is fully closed when the throttle lever as well as
trim lever on the transmitter are fully pulled down.
How to stop the engine
Pull down the throttle lever and trim lever on the transmitter
fully.