O.S. engine Max-50SX-H Ring Manuals

It is of vital importance, before attempting to operate your engine, to read the general 'SAFETY INSTRUCTIONS AND WARNINGS' in the following section 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. 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 ENGINE PARTS NAME 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. NOTES 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. Never touch, or allow any object to come into contact with, the rotating parts. Model engine fuel is also highly flammable. Keep it away from open 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. 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. 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. This engine was designed for model helicopters. 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. Install an effective silencer (muffler). Frequent close exposure to a noisy exhaust (especially in the case of the more powerful high-speed engines) may eventually impair your hearing and such noise is also likely to cause annoyance to others over a wide area. Check the linkage to the throttle arm before each flight. After starting the engine, carry out any needle-valve readjustments after stopping the rotor by closing the throttle to the lowest r.p.m.. Stop the engine before attempting to make other adjustments to the carburetor. Use an electric starter. The wearing of safety glasses is also strongly recommended. Press the rotor head down securely. Take care that the glow plug clip or battery leads do not come into contact with rotating parts. 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 rotor. Do not carry loose objects (such as pencils, screwdriv- ers, etc.) in a shirt pocket from where they could fall through the rotor disc. 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. Hold the rotor securely and keep well clear of spectators. Warning! lmmediately after a glowplug-ignition engine has been run and is still warm, conditions sometimes exist whereby it is just possible for the engine to restart when turned over WITHOUT the glowplug battery being reconnected. Remember this if you wish to avoid the risk of accidents. F J J F 28 34 27 33 A B 90° 90° A=B Linking the throttle servo to the carburetor Link the throttle servo to the carburetor using the throttle lever supplied. Throttle control rod A and B should be equal length. Set the linkage so that the servo output lever and throttle lever are parallel when the throttle stick on the transmitter is at middle position. Installing hole intervals on the F lever and on the J lever are different. Decide the lever to use according to the servo used. Be sure to cut off another lever to avoid any interference. INTRODUCTION 600928900000 Note on heating the glow plug Example The heatsink head on the engine is treated with an anodized finish which does not conduct current. Therefore, when heating a glow plug, connect one lead to the glow plug and the other to the head or cover plate retaining screw. Avoid sudden high r.p.m. immediately after the engine is started, as the clutch will engage and you may be struck by the rotor. Heatsink Head Carburetor Typr 60LH Crankshaft Propeller nut Crankcase Glowplug Beam Mount Needle Valve Fuel Inlet Mixture Control Valve Throttle Lever Mixture Control Screw Mixture Control Valve Stopper Thrust Washer Carburetor Rubber Gasket Cover Plate This is the increased power version of the 50SX-H RING whis is developed expressly for F3C M class helicopter competition utilizing 0.50 cubic inch engines. Blue Alumite heatsink head increases cooling capacity. Newly designed combustion chamber shape offers stable output both at hovering and high speed. The 60LH caburetor has a big 10mm bore which contributes the power increase. When the governor function from Futaba GY-701 or GY-750 gyro is employed, the Futaba BPS-1 Back Plate Sensor can be installed in a cell on the back plate. By employing the governor function, more stable flight can be achieved. Notes on installing cooling fan and clutch Do not use a tool which locks piston when installing a cooling-fan and clutch, or top of the piston may be damaged. Also, do not insert a screw driver or the similar into the exhaust port. Do not grip the engine mounting beams with a vise, or the crankcase will be distorted which will result in engine breaking. Vise NOTES WHEN APPLYING AN ELECTRIC STARTER Because of this initial tightness, a standard electric starter may have difficulty in rotating the engine when cold, before it has been adequately run-in. In this case, use a high-torque type starter. Do not over-prime. This could cause a hydraulic lock and damage the engine on application of the electric starter. If over-primed, remove glowplug, close needle-valve and apply starter to pump out surplus fuel. Cover the head with a rag to prevent pumped out fuel from getting into your eyes. Beam Mount It is recommended to use Crankshaft Clamp 3246 (CodeNo.71530400) available as an optional tool. Carburetor Sealing Washer MAX-50SX-H RING Hyper

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. G 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 model, radio control equipment, etc., are accessible for checking at the same time. G G