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.
CONTENTS SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE INTRODUCTION, BASIC ENGINE PARTS 2~5 7~8 AIR CLEANER 8~10 NOTES CONCERNING THE RECOIL STARTER 10~11 GLOWPLUG 11~12 TOOLS, ACCESSORIES, etc. 12~13 CARBURETOR CONTROLS 13~14 STARTING THE ENGINE & RUNNING-IN('Breaking-in) FINAL ADJUSTMENT 6 INSTALLATION PRESSURIZED FUEL SYSTEM IF THE ENGINE FAILS TO START 17 17~18 CARBURETOR CLEANLINESS 19 CARE AND MAINTENANCE 20 O.S.
SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE Remember that your engine is not a "toy", but a highly efficient internalcombustion 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.
WARNINGS • Never operate your engine in an enclosed space. Model engines, like automobile engines, exhaust deadly carbon-monoxide. Run your engine only in an open area. • Model engine fuel is poisonous. Do not allow 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 engines generate considerable heat. Do not touch any part of your engine until it has cooled.
NOTES • This engine is intended for model cars. Do not attempt to use it for any other purpose. • The wearing of safety glasses is also strongly recommended. • Mount the engine in your model securely, following the manufacturers' recommendations, using appropriate screws and locknuts. • Take care that the glowplug clip or battery leads do not come into contact with rotating parts. Also check that the linkage to the throttle arm is secure. • Install an effective silencer (muffler).
NOTES • To stop the engine, fully retard the throttle stick and trim lever on the trans-mitter, or, in an emergency, cut off the fuel supply by pinching the fuel delivery line from the tank. • Pull the operating handle straight out when starting the engine, so that the cord does not rub against the vehicle body or engine. This will help prevent the cord from being damaged by abrasion or engine heat. • Do not attempt to disassemble the recoil starter of the 15CV-RX.
The MAX-15CV-R is high-perfomance engines for 1/10 class R/C racing cars. There are two verions, the one with 10ER carburettor and the other with 10C carburetor. BASIC ENGINE PARTS Heatsink Head Carburetor Standard accessories Glow Plug No.8 Super Air Cleaner 102 102 Cleaner Body 101,102 Filter Elements (3pcs.) Engine Mount Spacer (For 15CV-RX) Cover Plate Crankshaft NOTE: With this engine, the piston will feel tight at the top of its stroke when the engine is cold. This is normal.
INSTALLATION OF THE CARBURETOR ENGINE INSTALLATION As delivered, the engine has its carburetor lightly install into the intake boss. Secure it as follows. Make sure that the vehicle's engine mounting surfaces are level and in the same plane. Poor installation may cause distortion of the crankcase, bearings, etc., resulting in erratic running and loss of performance. The recommended screws for securing the engine are 3mm or 4-40 steel Allen hexagon socket type.
Avoid forcing the screws. Secure with locknuts. If the bottom of the recoil starter housing would otherwise touch the car chassis, fit the engine mount spacers (supplied) between the engine's mounting lugs and the engine mount. Use the M3x15 screws provided. With some vehicles, it may be necessary to make minor trimming modifications to chassis or body when fitting the engine. AIR CLEANER TYPE 102 This is a heavy-duty wet type air cleaner that has been developed specifically for the O.S.
• Position the air cleaner correctly, so that it does not Always remove contaminated elements carefully, to ensure that dirt cannot enter the carburetor. foul the cylinder-head or obstruct the needle-valve.
• Position the air cleaner correctly, so that it does not NOTES CONCERNING THE RECOIL STARTER foul the cylinder-head or obstruct the needle-valve. ( 15CV-RX ONLY) REMINDER! ◆ Do not attempt to disassemble the recoil starter. If you do so, the very strong spring inside will be suddenly ejected. This can be very dangerous. ◆ Do not extend the starter cord more than 45cm(18"). Do not abruptly release the operating handle. Allow the cord to rewind smoothly while still holding the handle.
◆ The starter prevents the engine from being rotated in the wrong direction.The unit will be damaged if you attempt to force the flywheel in the opposite direction (i.e. clockwise when viewed from the crankshaft end). NOTE: Because, in the interests of personal safety, dismantling of the starter mechanism is strongly discouraged, the Recoil Starter is available for replacement only as a preassembled unit. However, some related parts, such as Starting Shaft and Rear Adaptor, are obtainable separately.
When to replace the glowplug As a starting point, we recommend a fuel containing 10-20% nitromethane, changing to a fuel containing more nitro only if necessary. When the nitro content of the fuel is increased or the brand of fuel is changed, it is advisable to initially run the engine with a richer needle-valve setting, so that the optimum setting for the new fuel may be rechecked as described in the RUNNING-IN paragraphs.
BATTERY INTEGRATED GLOWPLUG HEATER CARBURETOR CONTROLS (10C) Commercialy available handy glowplug heater in which the glowplug battery and battery leads are integrated. Three adjustable controls are provided on this carburetor. • The Needle-Valve: For adjusting the mixture strength when the throttle is fully open. FUEL PUMP For filling the fuel tank, a simple, polyethylene "squeeze" bottle, with a suitable spout, is required.
CARBURETOR CONTROLS (10E-R) PRESSURIZED FUEL SYSTEM Three adjustable controls are provided on this carburetor. • The somewhat violent changes of vehicle attitude • that occur in off-road running, combined with the fact that, in buggy type cars, the fuel tank is often located some distance from the carburetor, means that fuel 'head' at the carburetor can vary and upset running.Therefore,it is recommended that a muffler pressurized fuel feed system be used.
STARTING THE ENGINE & RUNNING-IN ('Breaking-in') ◆ In case of the 10E-R caburetor The following procedure is suitable for these engines when the O.S. T-1020 tuned silencer and a fuel containing up to 30% nitromethane are used. Use the same fuel as is to be employed for all initial running and containing NOT LESS THAN 18% lubricant. that the minimum throttle opening (idle setting) is approximately 1.0mm.
Remember! It is vitally important to set the throttle at the correct position before attempting to start the engine. If the engine is allowed to run with the throttle too far open under "no load" conditions, it will rapidly overheat and may be seriously damaged. be opened for brief bursts of increased power. If the engine stops at medium speeds, close the Mixture Screw 45-90˚. 30 Needle The position of the needle-valve when starting the engine.
FINAL ADJUSTMENT IF THE ENGINE FAILS TO START • Run the vehicle (with throttle fully open) over the Check the following: longest available straight course, in order to observe the model's speed. Next return the car to the starting point, close the Needle-Valve 30˚ and repeat the run, taking note of the improvement in performance. Continue with further runs, gradually reducing the Needle-Valve setting and aiming to achieve the highest straight-line speed.
• With the optimum mixture control position, light • In this case, turn the Mixture Control Valve clockwise 45~90˚. If, on the other hand, the engine tends to speed up momentarily and then cut out abruptly when the throttle is opened,the idling mixture is too lean. Correct this by turning the Mixture Control Valve counter-clockwise 45~90˚. smoke is visible during high speed running,and the engine revolutions increase smoothly during acceleration.
CARBURETOR CLEANLINESS The correct functioning of the carburetor depends on its small fuel orifices remaining clear. ■ BALL LINK AND SLIDE VALVE EXTENSION In case of the 10C caburetor (In case of the 10C caburettor) It is seldom necessary to separate the slide-valve extension from the slide-valve itself. For cleaning, withdraw this complete sub-assembly from the carburetor body after removing the slide-valve guide screw. Then wash with methanol or glow-fuel.
4. Then, inject some after-run oil into the engine, and rotate the engine with an electric starter for 4 to 5 seconds to distribute the oil to all the working parts. CARE AND MAINTENANCE 1. The minute particles of foreign matter, that are present in any fuel may, by accumulating and partially obstructing fuel flow, cause engine performance to become erratic and unreliable. O.S. 'Super-Filters' (large and small) are available, as optional extras, to deal with this problem.
RACING ENGINE PARTS O.S. GENUINE PARTS & ACCESSORIES ■ 10C Automatic ■ O.S. Glow Plug No.8 (71608001) A3 (71605300) ■ Exhaust Header Pipes For MUGEN MTX For Kyosho Super10 (72103150) (72103110) Carburettor (21286000) For Kyosho V-ONE R,S (72103160) A5 (71605100) ■ Super Air Cleaner For Kyosho Spider & HPI Nitro (72103140) 102 (72403200) 102S (72403202) ■ 101,102 Filter Elements (72403120) For Tamiya TGX (72103120) For Tamiya TG10 (72103130) (6pcs.
15CV-R EXPLODED VIEW 90 Not included in 15CV-R(S) C .M2 .6x1 2 1 t e 2 22 4 C. M2 .
15CV-R ENGINE PARTS LIST No. Code No. Description 1 21504600 Heatsink Head 2 21503020 Cylinder & Piston Assembly 3 21806000 Piston Pin 4 23817000 Piston Pin Retainer(2pcs.
15CV-RX EXPLODED VIEW C.M2.6x12 1 y e 2 4 3 24 5 6 w M.+M2.6x7 8 q 7 = 9 0 u-1 u-2 M.+M2.
15CV-RX ENGINE PARTS LIST No. 1 2 3 4 5 6 7 8 9 0 = 25 q w e r t y u u-1 u-2 Code No. Description 21504600 Heatsink Head 21503020 Cylinder & Piston Assembly 21806000 Piston Pin 23817000 Piston Pin Retainer(2pcs.
15CV-R(P) EXPLODED VIEW C.M2.6x12 1 w = 2 26 4 C.M2.
15CV-R(P) ENGINE PARTS LIST Description 27 No. Code No. 1 21504600 Heatsink Head 2 21503020 Cylinder & Piston Assembly 3 21806000 Piston Pin 4 23817000 Piston Pin Retainer(2pcs.
10C CARBURETOR EXPLODED VIEW & PARTS LIST No. 3-1 3 4 5 1-1 1-2 1-1 46066319 1-2 22781800 2 21285640 Throttle Stop Screw Needle Valve Assembly 21285901 27881820 4 21286100 5 21285220 Slide Valve Guide Screw 6 21286200 Slide Valve 7 8 C…Cap Screw M…Oval Fillister-Head Screw F…Flat Head Screw N…Round Head Screw S…Set Screw "O" Ring(S) (2pcs.) 3 C.M3.5x8 9 "O" Ring(L) (2pcs.) 3-1 0 ✽ Type of screw Mixture Control Valve Assembly 21285600 1 6 Description Code No.
10E-R CARBURETOR EXPLODED VIEW & PARTS LIST 0-1 0 9 6 0-2 8 7-1 - 7-2 7 1-1 2 1 3 No. Code No. 1 21481600 Mixture Control Screw 1-1 27881820 2 21481420 "O" Ring (2pcs.
15CV-R THREE VIEW DRAWING Dimensions(mm) 11 2.49 cc (0.152 cu.in.) 15.2mm (0.598 in.) 13.7mm (0.539 in.) 4,000~36,000 r.p.m. 1.2 bhp / 31,000 r.p.m. 195g(6.88oz.) M5x0.8 25 71.1 83.9 27.5 12.8 ■ Displacement ■ Bore ■ Stroke ■ Practical R.P.M. ■ Power output ■ Weight 31.
15CV-RX THREE VIEW DRAWING Dimensions(mm) 11 2.49 cc (0.152 cu.in.) 15.2mm (0.598 in.) 13.7mm (0.539 in.) 4,000~36,000 r.p.m. 1.2 bhp / 31,000 r.p.m. 253g(8.924oz.) M5X0.8 71.1 91.1 27.5 20 25 ■ Displacement ■ Bore ■ Stroke ■ Practical R.P.M. ■ Power output ■ Weight 31.4 SPECIFICATIONS 40 41 33.8 88.
15CV-R(P) THREE VIEW DRAWING Dimensions(mm) 11 2.49 cc (0.152 cu.in.) 15.2mm (0.598 in.) 13.7mm (0.539 in.) 4,000~36,000 r.p.m. 1.2 bhp / 31,000 r.p.m. 193.2g(6.82oz.) UNF1/4-28 25 71.1 83.9 27.5 12.8 ■ Displacement ■ Bore ■ Stroke ■ Practical R.P.M. ■ Power output ■ Weight 31.4 SPECIFICATIONS 25 39 34.8 79.
TA BL ISH ING NC ES E E ANC UNEQ UA L I TY PRECISION & P ERF QUA ED OR M LL L CEL THE STAN ARDS OF EX D E 6-15 3-Chome Imagawa Higashisumiyoshi-ku Osaka 546-0003, Japan TEL. (06) 6702-0225 FAX. (06) 6704-2722 URL : http://www.os-engines.co.jp C Copyright 2001 by O.S.Engines Mfg. Co., Ltd. All rights reserved. Printed in Japan.
