CARBURETOR CONTROLS STARTING THE ENGINE & RUNNING-IN ('Breaking-in) Set the throttle opening a little wider that the factory 1/10 class for car MAX-12TG Ver. RUNNING-IN ('Breaking-in) setting by adjusting the Throttle Stop Screw. Needle Valve Ball Link Running- in is a procedure for an engine to come It is of vital importance, before attempting to operate your Install an effective silencer (muffler). Frequent close Needle Holder close to actual running conditions (fuel, r.p.m., approx 1mm engine, to read the general 'SAFETY INSTRUCTIONS WARNINGS exposure to a noisy exhaust (especially in the case engine temperature, etc.). of the more powerful highspeed engines) may AND WARNINGS' in the following section and to strictly Model engine fuel is poisonous. Do not Excessively rich running and 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 Fuel Inlet running should be avoided. Prolonged low speed also likely to cause annoyance to others over a wide or mouth. Always store it in a clearly marked Dust Cover running and low temperature running may result Also, please study the entire contents of this area. container and out of the reach of children. in the oil in the fuel becoming gelled and the instruction manual, so as to familiarize yourself with Metering Needle the controls and other features of the engine. Model engine fuel is also highly flammable. The wearing of safety glasses is also strongly piston / liner becoming stuck together. recommended. Thermo Insulator Throttle Stop Screw Keep it away from open flame, excessive PRESSURIZED FUEL SYSTEM SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE heat, sources of sparks, or anything else Take care that the glowplug clip or battery leads do When the engine starts, warm it up by repeatedly The somewhat violent changes of vehicle attitude which might ignite it. Do not smoke or allow not come into contact with rotating parts. Also check Three adjustable controls are provided on this increasing the rpm to medium speed and back Remember that your engine is not a " toy ", but a that occur in off-road running, combined with the fact anyone else to smoke, near to it. that the linkage to the throttle arm is secure. carburetor. again to a fast idle with the mixture set very rich, highly efficient internal-combustion machine whose that, in buggy type cars, the fuel tank is often located power is capable of harming you, or others, if it is The Needle-Valve (Adjusted at the factory): the glowplug connected, and the driving wheels Model engines generate considerable For their safety, keep all onlookers (especially small some distance from the carburetor, means that the clear of the ground. The rich mixture will provide misused or abused. As owner, you, alone, are For adjusting the mixture strength when the throttle heat. Do not touch any part of your engine children) well back (at least 20 feet or 6 meters) fuel 'head' at the carburetor can vary and upset adequate lubrrication and cooling indicated by responsible for the safe operation of your engine, so is fully open. until it has cooled. Contact with the when preparing your model for running. running.Therefore,it is recommended that a muffler profuse exhaust smoke. act with discretion and care at all times. If at some pressurized fuel feed system be used. future date, your O.S. engine is acquired by another muffler (silencer), cylinder head or Before starting the engine, always check the The Metering Needle (Adjusted at the factory): person, we would respectfully request that these exhaust header pipe, in particular, may tightness of all the screws and nuts especially those For adjusting the mixture strength at part-throttle Never run your vehicle without installing the air instructions are also passed on to its new owner. result in a serious burn. of joint and movable parts such as throttle arm. and idle speed, to obtain steady idling and smooth cleaner. Dust and dirt that may otherwise be drawn Missing retightening the loose screws and nuts into the engine will rapidly shorten its life. The advice which follows is grouped under two Never operate your engine in an enclosed space. acceleration to mid speed. often causes the parts breakage that is capable of headings according to the degree of damage or Model engines, like automobile engines, exhaust The Throttle Stop Screw (Adjusted at the factory): harming you. The following procedure is suitable when a fuel danger which might arise through misuse or neglect. deadly carbon-monoxide. Run your engine only in For setting the minimum idle speed: containing 30% nitro-methane is used. an open area. To stop the engine, fully retard the throttle stick and NOTE: Readjustment may be necessary, occasionally Fill the tank completely with fuel. trim lever on the trans-mitter, or, in an emergency, throttle trigger WARNINGS to allow for changes in fuel formula, gear ratio or cut off the fuel supply by pinching the fuel delivery Temporarily remove the glowplug to check that it These cover events which might involve serious NOTES clutch engagement point. line from the tank. glows bright red when energized. Attention: (in extreme circumstances, even fatal) injury. This engine is intended for model cars. Do not attempt to use it for any other purpose. Warning! Immediately after a glowplug-ignition engine The carburetor is set as shown below at the factory. It is vitally important to set the has been run and is still warm, conditions sometimes INSTALLATION OF THE CARBURETOR Start the engine as it is. throttle at the correct position NOTES Mount the engine in your model securely, following exist whereby it is just possible for the engine to abruptly As delivered, the engine has its carburetor lightly before starting the engine. If These cover the many other possibilities, generally less the manufacturers' recommendations, using The needle-valve is set approx. 2.5 turns opened restart if it is rotated over compression WITHOUT the installed in the intake boss. Secure it as follows. the engine is allowed to run obvious sources of danger, but which, under certain appropriate screws and locknuts. from the fully closed position. glowplug battery being reconnected. with the throttle too far open circumstances, may also cause damage or injury. 1. Loosen the retainer screw, rotate the carburetor to its correct position and make sure that it is pressed well Turn the needle-valve clockwise until it stops. under ''no load'' conditions down into the intake boss, compressing the rubber This is the fully closed position. Do not force it to (i.e. with the driving wheels not in contact with the STARTER BOX While Operating gasket, before retightening screw. turn further. ground) it will rapidly over-heat and may be ENGINE CONSTRUCTION Please do not run on a public street, this For starting the engine. seriously damaged. With this engine, the piston will feel tight at the could cause serious accidents, personal 2. Rotate the retainer screw gently until it stops, then top of its stroke (TDC) when the engine is cold. injuries and/or propetry damage. tighten a further 60-90 . Next, disconnect the glowplug battery and try Do not overtighten the screw as this will damage the Open Close running the car on the track. This is normal. The cylinder bore has a slight Please do not run near pedestrians or small children. FUEL PUMP taper. The piston and cylinder are designed to carburetor body. If the engine stalls, open the throttle fractionally, but For filling the fuel tank, a simple, polyethylene Needle Valve achieve a perfect running clearance when they Please do not run in small or confined areas. try to keep the engine running as rich as possible: if "squeeze" bottle, with a suitable spout, is required. reach operating temperature. Please do not run where loud noises can disturb Rotate the retainer nut it stops because of being excessively over-rich, others, such as hospitals and residential areas. gently until it stops. close the Needle-Valve 15˚ and try again. SILICONE FUEL LINE Throttle is set approx. 0.5mm open. Near TDC Heatproof silicone tubing of approx. Tighten a further Run the car on the track until one tank of fuel has NOTE Approx. 0.5mm open factory setting. 5mm o.d. and 2mm i.d. is required for 60-90 been consumed, then close the Needle-Valve 15˚ and As delivered, the engine has the carburetor the connection between the fuel tank run the car for 3 to 5 full tanks of fuel. lightly fit into its intake. Secure it changing its and engine. Repeat this procedure until approx. 1 liters of fuel angle according to the car chassis. have been consumed, during which time the throttle Piston may be opened for brief bursts of increased power. Cylinder ABOUT THE ENGINE TOOLS If the engine stops at medium speeds, close the Liner O.S. SPEED PISTON PIN RETAINER PLIERS The MAX-12TG Ver. III has been developed based on Metering Needle 45˚. ENGINE INSTALLATION Crankshaft the MAX-12TG Ver. II. It features two-piece head, O.S. SPEED DRIVER TOOLS REALIGNMENT OF METERING NEEDLE specially designed outer head and inner Turbo head. When installing the engine on the chassis, note the In the course of making carburetor adjustments, it is just The position of the needle-valve The engine is supplied with the P4 turbo glow plug. following points. when starting the engine. The Type 12D2 carburetor, equipped with thermos-in- (Chamfer inside edges of bearers when the engine possible that the Metering Needle may be inadvertently Slight taper mount edges interfere with the engine.