It is of vital importance, before attempting to operate your engine, to read the general 'SAFETY INSTRUCTIONS AND WARNINGS' section on pages 2-4 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.
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 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.
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' recommendations, using appropriate screws and locknuts. • 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.
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.
INTRODUCTION This engine is the MAX-140RX-FI (fuel injection) engine equipped with a revolutionary fuel supply system that was jointly developed by Futaba, a manufacturer of Radio control equipment, and Ogawa Seiki, a manufacturer of model engines. This system detects engine speed with a sensor based on throttle signals transmitted from a transmitter.
BASIC ENGINE PARTS Glow plug TYPE F Cylinder Head Accessories •Fuel Filter Injector Air Valve 70C •Check Valve Injector •Y harness •Driver to push EC-1 keys •Duble-sided sponge-backed Drive Hub cushioning tape Crankshaft Temperature Sensor Pressure Fitting Crankshaft Fuel Filter Check Valve Cover Plate RPM Sensor Y harness Electronic Control Unit •The photograph may differ from the actual product.
CONNECTING WITH THE EC-1 Connect the receiver and servo-related components (rudder section) in the same manner as in the past. (5) Rotation sensor input terminal (r.p.m.
EC-1 DISPLAYS AND EXPLANATIONS When the power supplies of the transmitter and receiver are turned on and function key is pressed with a pressing rod (non-metallic rod), the LCD display changes in the manner shown below. (The display changes in the opposite order when function key is pressed.) Power ON The current engine speed is displayed. 0 r.p.m.
Explanation of TmD ATL and TmD Fine Fuel injection volume TmD ATL TmC Hi Mi Lo This adjustment mechanism allows adjustment of a single trim point using the slow position as the origin. Adjustment uses the injection trim adjustment dial (spare channel dial) on the transmitter. There is no change at Lo (slow position) while the trim volume reaches a maximum at Hi.
List of 140RX-FI Usage Conditions Part Name Manufacturer Exhaust manifold O.S. *For the 140RX Tuned silencer O.S. *T-6010 Glow plug O.S. *Type F Propeller Commercially available high-quality product General references: *16x14(2 blades) 15x12(4 blades) 15x13.5(3 blades) Remarks Mid-range engine speed should be approximately 6,500 rpm. Maximun speed should be between 7,300 and 8,000 rpm.
(3) Fuel Tank and Lines Fig.3 Fuel filter (provided) T nipples (sold separately) Check valve (provided) Fuel supply line Tank pressure ven line Connect all lines securely as shown in the figure above. Since high pressure is applied to the fuel tank from the engine crankcase, make connections using a commercially available, thick-walled silicon tube. In addition, make sure to securely seal the area around the cap.
Rotor mark Throttle opening Call up the ATV menu on the condition menu and select THR. Confirm that it is in the center of the throttle curve when the stick is in the center position. Then align the mark in the center of the air valve at that point. The center of the curve is the center, and if the stick is shifted out of position, give priority to the center of the throttle curve. Center mark 55˚ 22.5˚ Slow mark Throttle stick position Make the settings according to the procedures described below.
(4) Adjustment of Amount of Throttle Servo and Air Valve Angle Move the throttle stick on the transmitter to slow and then full high. If there is excessive or insufficient opening of the air valve, adjust the opening with the throttle angle adjustment function (ATV). Confirm that the servo is not subjected to an excessive load due to tugging or pulling. An excessive load on the servo can cause the battery to discharge and air valve to lock.
Engine Starting (1) Always be sure to close the throttle stick to idle position before applying the starter and starting battery. (Do not attempt to start the engine manually since this is potentially dangerous.) After the engine has started, gradually move the throttle stick on the transmitter to the full high position. Then gradually move the throttle stick to the full slow position and disconnect the plug heater.Again move the throttle stick to the full high position and check the engine speed.
General reference for engine speed Case of a 16 x 14, 2-blade propeller Case of a 15 x 13.5, 3-blade propeller Full slow engine speed Intermediate slow engine speed Full high engine speed 1,700~1,800r.p.m. 1,700~1,800r.p.m. 6,400~6,600r.p.m. 6,400~7,000r.p.m. 7,300~8,000r.p.m. 7,300~7,900r.p.m. Note: The engine speed will not be the same depending on propeller variations, engine mounting method, linkage method between the throttle servo and air valve, and differences in the fuel used.
If the engine produces a higher pitch sound immediately after taking off or if the engine appears to lose power and exhaust cannot be seen at all (although varying somewhat depending on the fuel), turn the injection trim adjustment dial (spare channel dial) in the (+) rich direction by about 45˚ with the throttle stick in the full high position and reconfirm engine operation by continuing to fly for 3-4 minutes.
Care After Use • First vent the pressure from the fuel tank. Next, drain any fuel in the fuel tank. Turn on the transmitter and receiver switches but do not heat the plug. Move the transmitter engine control lever to the center position without heating the plug, and then turn the engine over with the electric starter several times. (This is done to discharge any fuel between the tank and the injector.
Troubleshooting Problem Engine does not start Confirmation • Is the power turned on? • Are the connectors securely connected? • Is the lead wire broken? • Is the plug burned out? • Has Lmt been set? • Is engine speed displayed on the EC-1 when the engine is running? • Are abnormal values (±100%) displayed for LmL, LmM or LmH? • Are the rubber dampers of the engine soft mount too soft? Engine operation is unstable at low speeds • Are the rubber dampers of the soft mount damaged? • Is the throttle linkage s
THREE VIEW DRAWING Dimensions(mm) Specifications 25 13 12 23.0cc/1.404cu.in. 32.0mm/1.260in. 28.6mm/1.126in. 1.800~10.000r.p.m. 3.5bhp/9.000r.p.m. 807g/28.5oz. 4-ø5.1 58 70 ■ Displacement ■ Bore ■ Stroke ■ PracticalR.P.M. ■ Output ■ Weight 93.9 ø55 UNF 5/16-24 24.5 M4x0.7 48.4 78 27 O.S. GENUINE PARTS & ACCESSORIES ■ T-6010 TUNED SILENCER ■ EXHAUST HEADER PIPE (72102100) (72104200) ■ O.S.
ENGINE & INJECTOR AIR VALVE EXPLODED VIEW C.M3X8 1 2 C.M3.5X18 3 4 1 6 5 C.M2.6X8 2 7 3 4 5 o 6 y 7 8 8-1 e i q - w C.
ENGINE PARTS LIST No. Code No.
MEMO 22
UALITY PRECISION & PERF ORM AN NC E UN ES ED Q CE L UAL EQ TAB L IS H IN G T H E STA N D A R D S O F EXCE LLE 6-15 3-Chome Imagawa Higashisumiyoshi-ku Osaka 546-0003, Japan TEL. (06) 6702-0225 FAX. (06) 6704-2722 http://www.os-engines.co.jp C Copyright 2000 by O.S.Engines Mfg. Co., Ltd. All rights reserved. Printed in Japan.
