O.S. engine FS-40S Einrichtungshandbuch

It is of vital importance, before attempting to

operate your engine, to read the general

'SAFETY INSTRUCTIONS AND WARNINGS'

section on pages 2-6 of this booklet and to strictly

adhere to the advice contained therein.

●Also, please study the entire contents of this

instruction manual, so as to familiarize yourself

with the controls and other features of the

engine.

Keep these instructions in a safe place so that

you may readily refer to them whenever

necessary.

It is suggested that any instructions supplied

with the aircraft, radio control equipment, etc.,

are accessible for checking at the same time.

●

SAFETY INSTRUCTIONSAND WARNINGS

ABOUT YOUR O.S. ENGINE

INTRODUCTION,BASIC ENGINE PARTS

INSTALLATION

INSTALLATION OF CHOKE ROD, NEEDLE VALVE

EXTENSION, EXHAUST PIPE ADJUSTMENT(FS-26S)

SILENCER,

LINKAGE OF THROTTLE LEVER

BEFORE STARTING

FUELAND PRESSURE LINES

ADVICE ON SELECTION OF FUEL,

GLOEPLUG & PROPELLER

STARTING THE ENGINE

CONTENTS

RUNNING -IN

CARBURETOR

CARBURETOR AIR-BLEED ADJUSTMENT

TROUBLE SHOOTING WHEN THE

ENGINE FAILS TO START

VALVE ADJUSTING

CARE AND MAINTENANCE

THREE VIEW DRAWING

ENGINE EXPLODED VIEW

CARBURETOR EXPLODED VIEW

& PARTS LIST

GENUINE PARTS &ACCESSORIES

MEMO

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.

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.

SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE

The advice which follows is grouped under two headings according to the

degree of damage or danger which might arise through misuse or neglect.

WARNINGS NOTES

These cover events which

might involve serious (in

extreme circumstances, even

fatal) injury.

These cover the many other

possibilities, generally less obvious

sources of danger, but which, under

certain circumstances, may also

cause damage or injury.

WARNINGS

Model engine fuel is poisonous. Do not

allow it to come into contact with the eyes

or mouth.Always store it in a

clearlymarkedcontainerand

out of the reach of children.

Never operate your engine in an en-

closed space. Model engines, like auto-

mobile engines, exhaust deadly carbon-

monoxide. 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 (silencer),

cylinder head or exhaust

header pipe, in particular,

may result in a serious burn.

•

Never touch, or allow any object to come

into contact with, the rotating

propeller and do not crouch

over the engine when it is

running.

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).

•

Model engine fuel is also highly

flammable. Keep it away from open flame,

excessive heat, sources of sparks, or

anythingelsewhichmightignite

it.Donotsmokeorallowanyone

else to smoke, near to it.

•

NOTES

•

This engine was designed for model

aircraft. Do not attempt to use it for any

other purpose.

Mount the engine in your model securely,

following the manufacturers' recommenda-

tions, using appropriate screws and lock-

nuts.

Be sure to use the silencer (muffler)

supplied with the engine. Frequent

exposure to an open exhaust may

eventually impair your hearing.

Such noise is also likely to cause

annoyance to others over a wide area.

Install 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 direction of flight.

Firmly tighten the propeller nut, using the

correct size wrench.

If you remove the glowplug from the engine

and check its condition by connecting the

battery leads to it, do not hold the plug with

bare fingers.Use an appropriate tool or a

folded piece of cloth.

NOTES

•

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 install a spinner, make sure that it is

a precision made product and that the

slots for the propeller blades do not cut into

the blade roots and weaken them.

Preferably, use an electric starter. The

wearing of safety glasses is also strongly

recommended.

•

•Discard any propeller which has become

split, cracked, nicked or otherwise rendered

unsafe. Never attempt to repair such a

propeller: destroy it. Do not modify a propeller

inanyway,unlessyouarehighlyexperienced

in tuning propellers for specialized

competition work such as pylon-racing.

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 propeller.

After starting the engine, carry out any

needle-valve readjustments from a safe

position behind the rotating propeller. Stop

the engine before attempting to make other

adjustments to the carburettor.

•

NOTES

•

Adjust the throttle linkage so that the engine

stops when the throttle stick and trim lever

on the transmitter are fully retarded.

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 meters) 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 spectators.

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!

•Silencer Body

•Choke rod

•Silicone tubing

FS-26S FS-40S

INSTALLING THE GLOWPLUG

Carburetor

Install washer on glowplug and

insert carefully into cylinder-

head, making sure that it is not

cross-threaded before tightening

firmly.

BASIC ENGINE PARTS

The FS Series engines are up-to-date

overhead-valve four-stroke-cycle engines

formodel aircraft useand arethe outcome of

a long period of technical development. The

FS Series engines are produced by the

world's oldest and largest model engine

manufacturing company; a company which

also pioneered the quantity production of

model four-cycle engines.

Drive Hub

Crankcase

Silencer

Rocker Cover

INTRODUCTION

Glow plug

Washer

Accessories

•Silencer Assembly

•Choke rod

•Silicone tubing

Exhaust pipe

Propeller nut

Propeller

Washer

Cover plate

Glow plug

Fuel inlet

Breather nipple

Choke valve

INSTALLATION How to fasten the mounting screws.

Hardwood mounting beams

O.S. radial motor mount

(cast aluminum)

Tighten second nut firmly

down onto first nut.

Tighten this nut first.

Steel washer

3.5mm steel nuts

for FS-40S

Spring washer or

lock washer

Hardwood such as

cherry or maple.

Spring washer

3.5mm steel Allen screw

for FS-40S

Front view

CORRECT

Side view

Top surfaces are in

the same plane. Re-align the surfaces

as necessary

INCORRECT

Top surfaces are not

in the same plane. Opposite beam

Top surfaces

are not in the

same plane.

Engine does

not rest firmly.

Rigid hardwood

(e.g. maple)

At least

15mm(19/32") for FS-40S

At least 12mm

(1/2") for FS-26S

Installation in the model

A typical method of beam

mounting is shown below,left. O.S. radial motor mount

(Available as an optional extra part.

See parts list)

Make sure that the mounting beams are parallel

and that their top surfaces are in the same plane.

3mm steel nuts

for FS-26S

3mm steel screw

for FS-26S

3.5mm steel screw

for FS-40S

3mm steel Allen screw

for FS-26S

The FS Series engines are equipped with self-

reopening choke valves.

Cut the choke rod (supplied) to the length indicated,

then secire the rod by tightening the set screw, using

1.5mm Allen wrench (supplied), after installing the

engine.

INSTALLATION OF CHOKE ROD

Choke rod 1.5mm

Allen key

Set-screw

Choke rod

approx.

7mm approx.

2mm

Frame sides

of fuselage

NEEDLE VALVE EXTENSION

The needle-valve supplied with this engine is

designed to incorporate an extension so that, when

the engine is enclosed within the fuselage, the

needle-valve may be adjusted from the outside. Cut

the L-shaped rod supplied to the required length,

insert it into needle's centre hole and secure it by

tightening the set-screw in the needle-valve knob with

1.5mm. Allen key supplied.

Set-screw

1.5mm Allen key

The direction of the exhaust pipe may be altered in

accordance with individual installation requirements.

The angle is easily adjusted by loosening the nut that

secures the exhaust pipe to the culinder head. Use

the 10mm spanner supplied. Recheck the tightness of

the nut after the engine has been run, but take care

not to touch the exhaust-pipe as it becomes very hot.

EXHAUST PIPE ADJUSTMENT(FS-26S)

Releasing the

choke rod allows

the choke valve

to open.

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