Table of Contents
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It is of vital importance, before attempting to
operate your engine, to read the general
'SAFETY INSTRUCTIONS AND WARNINGS'
section on pages 2-5 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 vehicle, radio control equipment, etc.,
are accessible for checking at the same time.
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Related Manuals for O.S. engine FS-40S-C
Summary of Contents for O.S. engine FS-40S-C
- Page 1 It is of vital importance, before attempting to operate your engine, to read the general 'SAFETY INSTRUCTIONS AND WARNINGS' section on pages 2-5 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.
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Page 2: Table Of Contents
CONTENTS SAFETY INSTRUCTIONS AND WARNINGS IF THE ENGINE FAILS TO START ABOUT YOUR O.S. ENGINE VALVE ADJUSTING INTRODUCTION, BASIC ENGINE PARTS CARE & MAINTENANCE INSTALLATION OF THE CARBURETOR PARTS REPLACEMENT ENGINE INSTALLATION GENUINE PARTS & ACCESSORIES SUPER AIR CLEANER TYPE 102S... -
Page 3: Safety Instructions And Warnings About Your O.s. Engine
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. - Page 4 WARNINGS • • Model engine fuel Never operate your engine in an poisonous. Do not allow it enclosed space. Model engines, like to come into contact with automobile engines, exhaust deadly carbon-monoxide. Run your engine the eyes or mouth. Always store it in a clearly marked only in an open area.
- Page 5 NOTES This engine is intended for model cars. • • The wearing of safety glasses is also Do not attempt to use it for any other strongly recommended. purpose. Mount the engine in your model • Take care that the glowplug clip or •...
- Page 6 NOTES • To stop the engine, fully retard the • Pull the operating handle straight out throttle stick and trim lever on the when starting the engine, so that the trans-mitter, or, in an emergency, cut cord does not rub against the vehicle off the fuel supply by pinching the fuel body or engine.
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Page 7: Introduction, Basic Engine Parts
INTRODUCTION BASIC ENGINE PARTS These are overhead-valve four-stroke- FS-40S-CX cycle engines designed for 1/8 scale Rocker Cover radio-controlled model cars. Starter Handle The engine is distinguished by a black- Cylinder Head Intake Pipe anodized crankcase and rocker-cover and is supplied complete with an O.S. Super Air Cleaner as standard. -
Page 8: Installation Of The Carburetor
ENGINE INSTALLATION INSTALLATION OF THE CARBURETOR Make sure that the vehicle's engine mounting As delivered, the engine has its carburetor lightly surfaces are level and in the same plane. Poor fit into the intake boss. Secure it as follows. installation may cause distortion of the crankcase, bearings, etc., resulting in erratic running and loss Loosen the retainer screw,and remove the of performance. -
Page 9: Super Air Cleaner Type 102S 8
Secure with locknuts. If the bottom of the recoil AIR CLEANER TYPE 102S starter housing would otherwise touch the car It has a single filter element and is intended chassis, install the engine mount spacers primarily for circuit racing, where conditions are (supplied) between the engine's mounting lugs and less damaging than the very dusty, loose surfaces the engine mount. -
Page 10: Notes Concerning The Recoil Starter
• REPLACEMENT OF ELEMENT Position the air cleaner correctly, so that it does not foul the cylinder-head or obstruct the • It is advisable to replace the filter element with needle-valve. a new one after not more than one hour of running time. -
Page 11: Glowplug 10
This will help prevent the cord from being GLOWPLUG damaged by abrasion or engine heat. The FS-40S-C and FS-40S-CX are supplied with Try to avoid spilling fuel over the starter unit an O.S. Type F glowplug, specially designed for and its cord. Some fuels have a detrimental O.S. -
Page 12: Tools, Accessories, Etc
However, plug life can be extended and engine TOOLS, ACCESSORIES, etc. performance maintained by careful use, i.e.: The following items are necessary for operating • Install a plug suitable for the engine. the engine. • Use fuel containing a moderate percentage of FUEL nitromethane unless more is essential for Use only top quality methanol-based model engine fuel.For... - Page 13 When engines are run at very high speeds and on Use a 12-volt electric starter high-nitro fuels, glowplug elements will not last as with suitable battery for starting long. the engine.(FS-40S-C) LONG SOCKET WRENCH Reminder! Recommended for easy removal Model engine fuel is poisonous. Do not...
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Page 14: Pressurized Fuel System
PRESSURIZED FUEL SYSTEM STARTING, RUNNING AND ADJUSTMENT In the interests of a long working life and high The somewhat violent changes of vehicle performance, every internal-combustion engine attitude that occur in off-road running, needs to be "run-in" (or "broken-in" as the combined with the fact that, in buggy type procedure is also known). - Page 15 In the case of the throttle opening (idle O.S. FS-40S-C, however, the fact that it is a four- setting) is approximately stroke engine with inlet pipe and carburettor 2mm. mounted high on the cylinder-head, means that...
- Page 16 Note! Front Four stroke engine have stronger Rotating Direction compression than two stroke engines. Hold the chassis firmly when pulling the recoil starter. Also, wearing of gloves is Rear recommended to avoid any risk of injury. Remember! It is vitally important to set the throttle at the correct In case of FS-40S-CX position before attempting...
- Page 17 After running the engine for four or five tanks Re-adjust throttle stop screw, of fuel, begin closing the needle 5-15 degrees neccessary, so that the car may not move at between succeeding runs. Also, vary its idling. speed, from idling to medium RPM, with the throttle.
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Page 18: If The Engine Fails To Start
IF THE ENGINE FAILS TO START VALVE ADJUSTING ALL O.S. four-stroke engines have their Check the following: valve(tappet) clearances correctly set before Glowplug battery discharged or glowplug they leave the factory. However, if, after many defunct. hours of running time have been logged, a loss Fuel not reaching carburettor. - Page 19 ( 1 ) Note: If the gap is found to be less than 0.04mm, Remove the cover from the rocker-box on it is not necessary to readjust the clearance top of the cylinder-head, using the correct if the engine has good compression and size Allen hex key.
- Page 20 Turn adjusting-screw approx. 1/2 turn counter- Re-tighten locknut while holding adjusting clockwise to open gap, using appropriate tool - screw stationary. (Fig.5.) i.e. Allen hex key. (Fig.3.) Hold at the screw head. Adjusting Screw Turn approx. 1/2 turn. Allen Key Tighten Locknut.
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Page 21: Care & Maintenance
When cleaning the exterior of the engine, CARE & MAINTENANCE use methanol or kerosene. Do not use gasoline or any solvent that might damage At the end of each operating session, drain the silicone fuel tubing. the fuel tank, then energize the glowplug and try to re-start the engine to burn off any fuel that may remain inside. -
Page 22: Genuine Parts & Accessories
Super Air Cleaner 102S O.S.Glow Plug Hyper Exhaust Pipe Set (72403202) TYPE F (71615009) 102S Cleaner Body (72403212) (45226200) Dust Cap Set FOR FS-40S-C/CX φ 4 For Carburettor Nipple 101,102 Filter Elements (73300305) (5pcs.) (6pcs.) (72403120) φ 10 For Carburettor (73301012) (3pcs.) -
Page 23: Fs-40S-C Exploded View
FS-40S-C EXPLODED VIEW C.M2.6X12 C.M3X18 ( C.M3X12 ) M3.5 C.M2.6X8 C.M3X8 C.M2.6X7 Type of screw C … Cap Screw B … Binding Head Screw M … Oval Fillister-Head Screw F … Flat Head Screw N … Round Head Screw S … Set Screw... - Page 24 Description Code No. Screw Set 4 5213 010 Rocker Cover 4 5204 250 Rocker Support Assembly 4 5261 400 -1 4 5261 410 Rocker Support Rocker Arm Retainer (2pcs.) -2 4 5761 600 4 5261 010 Rocker Arm Assembly (1pair) -1 4 5261 110 Rocker Arm (1pc.) -2 4 5761 200...
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Page 25: Fs-40S-Cx Exploded View
FS-40S-CX EXPLODED VIEW C.M2.6X12 C.M3X18 ( C.M3X12 ) M3.5 C.M2.6X8 C.M3X8 M.M2.6X7 C.M2.6X7 Type of screw C … Cap Screw B … Binding Head Screw M … Oval Fillister-Head Screw F … Flat Head Screw N … Round Head Screw S … Set Screw... - Page 26 Description Code No. Screw Set 4 5213 010 Rocker Cover 4 5204 250 Rocker Support Assembly 4 5261 400 Rocker Support 4 5261 410 Rocker Arm Retainer (2pcs.) 4 5761 600 Rocker Arm Assembly (1pair) 4 5261 010 Rocker Arm (1pc.) 4 5261 110 Tappet Adjusting Screw 4 5761 200...
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Page 27: Carburettor Exploded View & Parts List
CARBURETTOR EXPLODED VIEW & PARTS LIST Code No. Description Throttle Lever Assembly 2 2081 408 Carburetor Dust Cover 2 1283 210 4 5285 200 Carburettor Rotor 4 5285 100 Carburettor Body 2 2681 310 Throttor Stop Screw 2 1481 900 Needle-valve Assembly "O"... -
Page 28: Three View Drawing 27
FS-40S-C THREE VIEW DRAWING Dimension(mm) 17.5 Specification Displacement 6.49cc (0.396cu.in.) Bore 21.2mm (0.835in.) Stroke 18.4mm (0.724in.) Practical R.P.M. 3,000 21,000r.p.m. Power output 0.9bhp/17,500r.p.m. Weight 323.5g (11.41oz.) UNF1/4-28 20.5... - Page 29 FS-40S-CX THREE VIEW DRAWING Dimension(mm) Specification 17.5 Displacement 6.49cc (0.396cu.in.) Bore 21.2mm (0.835in.) 18.4mm (0.724in.) Stroke Practical R.P.M. 3,000 21,000r.p.m. 0.9bhp/17,500r.p.m. Power output Weight 407g (14.35oz.) UNF1/4-28 38.9...
- Page 30 6-15 3-Chome Imagawa Higashisumiyoshi-ku Osaka 546-0003, Japan TEL. (06) 6702-0225 FAX. (06) 6704-2722 Copyright 2000 by O.S.Engines Mfg. Co., Ltd. All rights reserved. Printed in Japan. 040101...
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