O.S. engine FS-120S-E Quick Start Guide

Ô S aneme
It is of vital importance, before attempting to operate your engine,
to read this SAFETY INSTRUCTIONS AND WARNINGS’ leaflet
and to strictly adhere to the advice contained herein. Also, please
SAFETY INSTRUCTIONS
AND WARNINGS ABOUT YOUR O.S.ENGINE (FOR AIRCRAFT)
/\\ notes
read through the instruction leaflet or manual supplied with the
engine, so as to familiarize yourself with the controls and other | ° This engine was designed for model aircraft. Do not attempt to
features of the engine. use it for any other purpose.
keep this leaflet and the engine instructions in a safe place so that | ° Mount the engine in your model securely, following the manu-
you may readily refer to them whenever necessary. It is suggested
that any instructions supplied with the aircraft, radio-control equip-
ment, etc., are accessible for checking at the same time.
Remember that your engine is not a " toy ", but a highly efficient
internal-combustion machine whose power is capable of harming
you, or others, if it is misused or abused.
As owner, you, alone, are responsible for the safe operation of
your engine, so act with discretion and care at all times.
If at some future date, your O.S. engine is acquired by another
person, we would respectfully request that these instructions are
also passed on to its new owner.
W The advice which follows is grouped under two headings ac-
cording to the degree of damage or danger which might arise
through misuse or neglect.
Cover events which might involve
serious(in extreme circumstances, even
fatal) injury.
Cover the many other possibilities, gener-
ally less obvious sources of danger, but
which, under certain circumstances, may
also cause damage or injury.
e Never touch, or allow any object to come
into contact with, the rotating propeller and
do not crouch over the engine when it is run-
ning.
e A weakened or loose propeller may disintegrate or be thrown
off and, since propeller tip speeds with powerful engines may
exceed 600 feet(180 metres) per second, it will be understood
that such a failure could result in serious injury. (see ‘NOTES’
section relating to propeller safety).
e Model engine fuel is poisonous. Do not
alloow it to come into contact with the eyes
or mouth. Always store it in a clearly
marked container and out of the reach of
children.
* Model engine fuel is also highly flammable.
Keep it away from naked flame, excessive
heat, sources of sparks, or anything else
which might ignite it. Do not smoke or allow
anyone else to smoke, near to it.
* Never operate your engine in an enclosed space. Model en-
gines, like automobile engines, exhaust deadly carbon-mon-
oxide. Run your engine only in an open area.
« Model engines generate considerable heat.
Do not touch any part of your engine until it
has cooled. Contact with the muffler (si-
lencer), cylinder head or exhaust header
pipe, in particular, may result in a serious
burn.
facturers’ recommendations, using appropriate screws and
locknuts.
° Fit an effective silencer(muffler). Frequent close exposure to a
noisy exhaust (especially in the case of the most powerful high
-speed engines) may eventually impair your hearing and such
noise is also likely to cause annoyance to others over a wide
area.
. Fit a top-quality propeller of the diameter and pitch specified
for the engine and aircraft. Locate the propeller on the shaft so
that the curved face of the blades faces forward-i.e. in the di-
rection of flight. Firmly tighten the propeller nut, using the cor-
rect size wrench,
e Always check the tightness of the propeller nut and retighten it,
if necessary, before restarting the engine, particularly in the
case of four-stroke-cycle engines. If a safety locknut assembly
is provided with your engine, always use it. This will prevent
the propeller from flying off in the event of a "backfire", even if
it loosens.
° If you fit a spinner, make sure that it is a precision made prod-
uct and that the slots for the propeller blades do not cut into the
blade roots and weaken them.
e Discard any propeller which has become split, cracked, nicked
or otherwise rendered unsafe. Do not attempt to repair such a
propeller: destroy it. Do not modify a propeller in any way, un-
less you are highly experienced in tuning propellers for spe-
cialized competition work such as pylon-racing.
* Use an electric starter. The wearing of safety glasses is also
strongly recommended.
¢ Take care that the glow plug clip or battery leads do not come
into contact with the propeller. Also check the linkage to the
throttle arm. A disconnected linkage could also foul the propel-
ler.
- After starting the engine, carry out any needle-valve readjust-
ments from a safe position behind the rotating propeller. Stop
the engine before attempting to make other adjustments to the
carburettor.
e Adjust the throttle linkage so that the engine stops when the
throttle stick and trim lever on the transmitter are fully re-
tarded. Alternatively, the engine may be stopped by cutting off
the fuel supply. Never try to stop the engine physically.
* Take care that loose clothing (ties, shirt sleeves, scarves, etc.)
do not come into contact with the propeller. Do not carry loose
objects (such as pencils, screwdrivers, etc.) in a shirt pocket
from where they could fall through the propeller arc.
* Do not start your engine in an area containing loose gravel or
sand. The propeller may throw such material in your face and
eyes and cause injury.
° For their safety, keep all onlookers (especially small children)
well back (at least 20 feet or 6 metres) when preparing your
model for flight. If you have to carry the model to the take-off
point with the engine running, be especially cautious. Keep the
propeller pointed away from you and walk well clear of specta-
tors.
e Warning! Immediately after a glowplug-ignition engine has
been run and is still warm, conditions sometimes exist
whereby it is just possible for the engine to abruptly restart if
the propeller is casually flipped over compression WITHOUT
the glowplug battery being reconnected. Remember this if you
wish to avoid the risk of a painfully rapped knuckle!
6-15 3-Chome Imagawa Higashisumiyoshi-ku
O.S. ENGINES mraco.tro. osaka 546-0003 Japan TEL. (06) 6702-0225
©) copyright 1995 by O.S.Engines Mfg. Co., Ltd. All rights reserved. Printed in Japan. FAX. (06) 6704-2722

O.S. engine FS-120S-E Specifications

General

Brand	O.S. engine
Model	FS-120S-E
Category	Engine
Language	English