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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.
SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE 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.
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WARNINGS • • Model engine fuel is poi- Never operate your engine in an en- closed space. Model engines, like sonous. Do not allow it to automobile engines, exhaust deadly come into contact with the eyes or mouth. Always carbon-monoxide. Run your engine store it in a clearly marked only in an open area.
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NOTES • This engine is intended for model cars. • The wearing of safety glasses is also Do not attempt to use it for any other strongly recommended. purpose. • Take care that the glowplug clip or • Mount the engine in your model battery leads do not come into contact securely, following the manufacturers' recommendations, using appropriate...
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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. • Warning! Immediately after a glowplug- ignition engine has been run and is still warm, conditions sometimes exist whereby it is just possible for the engine...
The MAX-21VZ-R is high performance 3.5cc BASIC ENGINE PARTS class power unit for one-eighth-scale radio- Heatsink Head controlled 'Track racing' cars. It has been de- signed to meet the exacting requirements of the world's most expert drivers. An exhaustive Carburetor...
Insert carefully into heatsink head, making ENGINE INSTALLATION sure that it is not cross-threaded before Make sure that the vehicle's engine mounting tightening firmly. surfaces are level and in the same plane. Poor 2. Install the exhaust seal ring supplied. installation may cause distortion of the crankcase, bearings, etc., resulting in erratic INSTALLATION OF THE CARBURETOR...
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• Install a plug suitable for the engine. GLOWPLUG • Use fuel containing a moderate percentage of Since the compatibility of glowplug and fuel may have nitromethane unless more is essential for racing a marked effect on performance and reliability, it may events.
Model engine fuel also highly TOOLS, ACCESSORIES, etc. flammable. Keep it away from open flame, The following items are necessary for operating the excessive heat, sources of sparks, or engine. anything else which might ignite it. Do not FUEL smoke or allow anyone else to smoke, Generally, it is suggested that the user selects a fuel near to it.
• LONG SOCKET WRENCH The Metering Needle: Recommended for easy removal For adjusting the mixture strength at part-throttle and replacement of the angled and idling speeds, to obtain steady idling and smooth acceleration to mid speeds. and recessed glowplug, the O.S.Long Socket Wrench...
Now connect glowplug battery lead to heat the plug needs to be 'run-in' or 'broken-in'. With care, running- filament and start the engine. in of the MAX-21VZ-R can be carried out with it installed in the vehicle. Be sure to install the air- Needle Valve cleaner on the carburetor and to use a muffler- 0.5mm...
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• When the engine starts, first allow it to operate in The position of the needle-valve when starting the engine. short runs at the very rich starting settings, with the Needle glowplug battery still connected and the driving wheels clear of the ground. Close the needle-valve approx.
IF THE ENGINE FAILS TO START FINAL ADJUSTMENT Check the following: Run the vehicle (with throttle fully open) over the Glowplug battery discharged or glowplug defunct. longest available straight course, in order to observe the model's speed. Next return the car to the starting Fuel not reaching carburetor.
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Warning! With the engine running, close the throttle and Mixture adjustments (whether via the Metering allow it to idle for about five seconds, then reopen Needle, or the Needle-Valve) cannot be made the throttle fully. accurately under 'no-load' conditions, which, in If, at this point, the engine puffs out an excessive any case, are not advised, since such operation amount of smoke and the vehicle does not...
CARBURETOR CLEANLINESS Ball Link Carburetor Body The correct functioning of the carburetor depends on Metering Needle its small fuel orifices remaining clear. (See Care and Maintenance section on Page17.) First rotate Metering Needle until its slotted head is REALIGNMENT OF METERING NEEDLE AND flush with the carburetor body.
Warning! BEFORE STARTING THE ENGINE Do not attempt to turn the engine with the starter Before starting the engine for the first run of the day, if the engine is over-primed (flooded) with fuel. remove the glowplug and check the engine by To do so is likely to seriously damage the engine.
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inside the engine. Repeat this procedure until the GUARANTEE engine fails to fire. Do this while the engine is still warm. This engine is constructed from the very best materials available and to the very highest 4. Then, inject some after-run oil into the engine, and engineering standards, using the most advanced rotate the engine with an electric starter for 4 to 5 precision machinery.
ENGINE EXPLODED VIEW C.M3X16 C.M2.6X7 C.M2.6X18 Type of screw C Cap Screw M Oval Fillister-Head Screw F Flat Head Screw N Round Head Screw S Set Screw...