MAX-R21 Close to Actual Running Conditions (Fuel, R.P.M., It Is of Vital Importance, Before Attempting to Operate Your Install an Effective Silencer (Muffler)
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BASIC ENGINE PARTS The Metering Needle: STARTING THE ENGINE & RUNNING-IN ('Breaking-in) For 1/8 on-road Car Outer Head For adjusting idle and acceleration feeling. Running- in is a procedure for an engine to come MAX-R21 close to actual running conditions (fuel, r.p.m., It is of vital importance, before attempting to operate your Install an effective silencer (muffler). Frequent close Ball Link engine temperature, etc.). WARNINGS exposure to a noisy exhaust (especially in the case [Standard Position] engine, to read the general 'SAFETY INSTRUCTIONS Carburetor Excessively rich running and prolonged low speed of the more powerful highspeed engines) may AND WARNINGS' in the following section and to strictly Model engine fuel is poisonous. Do not Type 21M2 Flush with the ball link body. running should be avoided. Prolonged low speed eventually impair your hearing and such noise is adhere to the advice contained therein. allow it to come into contact with the eyes Exhaust running and low temperature running may result also likely to cause annoyance to others over a wide or mouth. Always store it in a clearly marked in the oil in the fuel becoming gelled and the Also, please study the entire contents of this area. instruction manual, so as to familiarize yourself with container and out of the reach of children. Metering Needle piston/liner becoming stuck together. The wearing of safety glasses is also strongly Slide Valve the controls and other features of the engine. Model engine fuel is also highly flammable. PRESSURIZED FUEL SYSTEM Keep it away from open flame, excessive recommended. Cover Plate Carburetor Body SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE It is recommended that a muffler pressurized fuel heat, sources of sparks, or anything else Take care that the glowplug clip or battery leads do feed system be used so that the fuel may be stably Remember that your engine is not a " toy ", but a which might ignite it. Do not smoke or allow not come into contact with rotating parts. Also check The Throttle Stop Screw: fed to the carburetor. highly efficient internal-combustion machine whose anyone else to smoke, near to it. that the linkage to the throttle arm is secure. Crankshaft For setting the minimum idle speed: power is capable of harming you, or others, if it is For their safety, keep all onlookers (especially small The following procedure is suitable when a fuel Model engines generate considerable Mounting Lugs misused or abused. As owner, you, alone, are children) well back (at least 20 feet or 6 meters) [Standard Position] containing 25% nitro-methane is used. responsible for the safe operation of your engine, so heat. Do not touch any part of your engine until it has cooled. Contact with the when preparing your model for running. Crankcase Approx 0.5mm 1. Set the carburetor controls at the standard positions act with discretion and care at all times. If at some (positions when the engine leaves the factory.) future date, your O.S. engine is acquired by another muffler (silencer), cylinder head or Before starting the engine, always check the Crankshaft Bearing (Front) person, we would respectfully request that these exhaust header pipe, in particular, may tightness of all the screws and nuts especially those 2. Switch the transmitter and make sure that each INSTALLATION OF THE STANDARD ACCESSORIES instructions are also passed on to its new owner. result in a serious burn. of joint and movable parts such as throttle arm. linkage moves correctly. Missing retightening the loose screws and nuts INSTALLATION OF THE TAPER COLLET The advice which follows is grouped under two Never operate your engine in an enclosed space. often causes the parts breakage that is capable of Insert the taper collet on the crankshaft, taking care Carburetor Body Slide Valve 3. Make sure rotating direction of the starter box is headings according to the degree of damage or Model engines, like automobile engines, exhaust Note: harming you. not to push the crankshaft back so that it contacts the correct (counter-clockwise seen from the front edge danger which might arise through misuse or neglect. deadly carbon-monoxide. Run your engine only in Sketch shows the carburetor reducer removed. coverplate face. of the crankshaft), and turn the engine with the an open area. To stop the engine, fully retard the throttle stick and NOTE: While the Mixture Control Valve and the starter box to draw fuel into the engine. trim lever on the trans-mitter, or, in an emergency, Cover Plate WARNINGS Metering Valve are set at the standard position cut off the fuel supply by pinching the fuel delivery 4. Connect glowplug battery lead to heat the plug and These cover events which might involve serious NOTES when the engine leaves the factory, readjustment line from the tank. start the engine with the starter box. (in extreme circumstances, even fatal) injury. This engine is intended for model cars. Do not may be necessary, occasionally to allow for When the engine does not start or stops right after attempt to use it for any other purpose. Warning! Immediately after a glowplug-ignition engine changes in fuel formula and climatic conditions being started, try the followings. has been run and is still warm, conditions sometimes Readjust the controls only when satisfactory NOTES Mount the engine in your model securely, following exist whereby it is just possible for the engine to abruptly results cannot be obtained with the standard Close the needle-valve These cover the many other possibilities, generally less the manufacturers' recommendations, using approx 1mm restart if it is rotated over compression WITHOUT the positions following the instructions mentioned in approx. 90° from the obvious sources of danger, but which, under certain appropriate screws and locknuts. glowplug battery being reconnected. standard position. circumstances, may also cause damage or injury. Taper Collet the “CARBURETOR ADJUSTMENT” section. Set the throttle opening a INSTALLATION OF THE CARBURETOR NOTES ON OPERATION TOOLS, ACCESSORIES, etc. little wider (approx. 1mm) ABOUT THE HEAD GASKET As delivered, the engine has its carburetor lightly installed than the standard setting ENGINE CONSTRUCTION The following items are necessary for operating the engine. GUARANTEE The engine is installed with a 0.1mm thick and a in the intake boss. Secure it as follows. by adjusting the Throttle With this engine, the piston will feel tight at the This engine is constructed from the very best Items necessary for starting 0.15mm thick gasket for 25% nitro fuel when it leaves Stop Screw. top of its stroke (TDC) when the engine is cold. materials available and to the very highest FUEL the factory. Adjust the total thickness according to Rotate the retainer screw engineering standards, using the most advanced gently until it stops. 5. When the engine starts, warm it up by repeatedly This is normal. The cylinder bore has a slight Generally, it is suggested that the user selects a fuel that is atmospheric temperature, humidity and glowplug precision machinery. However, the extremely increasing the rpm to medium speed and back taper. The piston and cylinder are designed to commercially available for model two-stroke engines When used. high stresses imposed by car racing operation again to a fast idle with the mixture set very rich, achieve a perfect running clearance when they the brand of fuel is changed, or the nitro content increased, it under very severe conditions, as well as stresses glowplug connected, and the driving wheels clear of reach operating temperature. is advisable to repeat the running-in procedure referred to in Tighten a further which are exacerbated by the use of powerful CARBURETOR CONTROLS STANDARD POSITIONS the ground. The rich mixture will provide adequate the RUNNING-IN paragraphs. Please note 120-180 fuels containing very high concentrations of (POSITIONS WHEN THE ENGINE LEAVES THE FACTORY) lubrication and cooling, indicated by profuse that with high-nitro fuels, although power Near TDC nitromethane, constitute hazards which are exhaust smoke. may be increased for competition purposes, Four adjustable controls are provided on this beyond a manufacturer's control. Accordingly, glowplug elements do not last as long and carburetor. Attention: we regret that it is not possible to extend our engine life will be shortened. usual warranty terms to this particular engine -i.e. It is vitally important to set the throttle at the correct position no guarantee is offered against material wear, or FUEL FILTER Ball Link Retaining Pull out Piston damage resulting therefrom, in actual use. Mixture before starting the engine. If Cylinder To installed in the fuel line between fuel Screw Dust Cover Control Valve "O" Ring "O" Ring the engine is allowed to run Liner tank and carburetor to prevent foreign with the throttle too far open While Operating matter from entering the carburetor. under ''no load'' conditions Please do not run on a public street, this could Crankshaft GLOWPLUG IGNITER (i.e. with the driving wheels not in contact with the cause serious accidents, personal injuries Commercialy available handy glowplug ground) it will rapidly over-heat and may be and/or propetry damage. heater in which the glowplug battery and seriously damaged. Slight taper Please do not run near pedestrians or small children. battery leads are integrated. 6. When the engine is warmed up, disconnect the Throttle Stop 1. Loosen the retainer screw, rotate the carburetor to its Please do not run in small or confined areas. Needle Valve glowplug battery and try running the car on the Metering Needle Screw correct position and make sure that it is pressed well Please do not run where loud noises can disturb STARTER BOX track.