O.S. engine max-18tz series, Owner'S Instruction Manual

Page 1: ...hicle radio control equipment etc are accessible for checking at the same time 1 CONTENTS SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O S ENGINE ENGINE CONSTRUCTION NOTES WHEN APPLYING AN ELECTRIC STARTER 18TZ SERIES INSTRUCTIONS TOOLS ACCESSORIES etc BASIC ENGINE PARTS CARBURETOR CONTROLS 11K 11L GLOWPLUG INSTALLATION NOTES CONCERNING THE RECOIL STARTER PRESSURIZED FUEL SYSTEM STARTING THE ENGINE...

Page 2: ... 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 3 WARNINGS Model engine fuel is poi sonous Do not allow it to come into contact with the eyesormouth Alwaysstore it in a clearly marked con tainer and out of the reach of children Model engine fuel is also h...

Page 3: ...e arm is secure For their safety keep all onlookers especially small children well back at least 20 feet or 6 meters when preparing your model for running 5 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 be...

Page 4: ...r TDC Slight taper When the engine is cold When the engine is hot 7 NOTES WHEN APPLYING AN ELECTRIC 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 getting into your eyes As deliver...

Page 5: ...el that is commercially available for model two stroke engines and contains 10 30 nitromethane As a starting point we recommend a fuel containing 20 nitromethane changing to a fuel containing more nitro if necessary When the brand of fuel is changed or the nitro content increased it is advisable to repeat the running in procedure referred to in the RUNNING IN paragraphs Please note that with high ...

Page 6: ...ary for the recoil starter ver sion i e 18TZ TX TOOLS HEX SCREWDRIVER SCREWDRIVER Necessary for engine installation 1 5mm 2mm 2 5mm 3mm Necessary for carburetor adjustments No 1 No 2 etc LONG SOCKET WRENCH WITH PLUG GRIP Recommended for easy removal and replacement of the angled and recessed glowplug the O S Long Socket Wrench incorporates a special grip 11 MAX 18TZ TX MAX 18TZ P T Heatsink Head C...

Page 7: ...sionally to allow for changes in fuel formula gear ratio or clutch engagement point Metering Needle Throttle Stop Screw Mixture Control Valve Needle Valve Thermo Insulator 13 CARBURETOR CONTROLS 11L The Needle Valve The Mixture Control Screw The Throttle Stop Screw For adjusting the mixture strength when the throttle is fully open For adjusting the mixture strength at part throttle and idle speed ...

Page 8: ...n actually burned out a plug may need to be replaced because it no longer delivers its best performance such as when When to replace the glowplug Filament surface has roughened and turned white Filament coil has become distorted Foreign matter has adhered to filament or plug body has corroded Engine tends to cut out when idling Starting qualities deteriorate 15 INSTALLATION OF THE CARBURETOR As de...

Page 9: ...e starter prevents the engine from being ro tated in the wrong direction The unit will be damaged if you attempt to force the flywheel in the opposite direction i e clockwise when viewed from the crankshaft end In case of the 18TZ TX 17 The somewhat violent changes of vehicle attitude that occur in off road running combined with the fact that in buggy type cars the fuel tank is often located some ...

Page 10: ...ow connect glowplug battery lead to heat the plug filament and start the engine When the engine starts first allow it to operate in short runs at the very rich starting settings with the glowplug battery still connected and the driving wheels clear of the ground The rich mixture will under these conditions provide adequate lubrication and cooling indicated by profuse smoke from the exhaust It is v...

Page 11: ...l the complete running in should be repeated Fuel 21 Run the vehicle with throttle fully open over the longest available straight course in order to observe the model s speed Next return the car to the starting point close the Needle Valve 30 and repeat the run taking note of the improvement in performance Continue with further runs gradually reducing the Needle Valve setting and aiming to achieve...

Page 12: ...ntly under actual running conditions until the engine responds quickly and positively to the throttle control CARBURETOR CLEANLINESS The correct functioning of the carburetor depends on its small fuel orifices remaining clear REALIGNMENT OF METERING NEEDLE AND MIXTURE CONTROL VALVE In the course of making carburetor adjust ments it is just possible that the Metering Nee dle and the Mixture Control...

Page 13: ...is still warm Note 5 Do not inject after run oil into the carburetor as this may cause the O rings inside the carburetor to deteriorate These procedures will reduce the risks of starting difficulties or corrosion after a period of storage Finally when cleaning the exterior of the engine use methanol or kerosene Do not use gasoline or any solvent that might damage the silicone fuel tubing Caution T...

Page 14: ...onnect correctly after setting servo at neutral Reverse rotating direction of starter box Mare sure it rotates counter clockwise seen from crankshaft side Recoil starter slips Inject cleaner spray into starter cord crevis on the body 27 Symptom Cause Corrective action Engine fires intermittently but does not run Insufficient fuel in the tank Fill the tank with fuel Deteriorated glowplug Replace gl...

Page 15: ...eal ring Check the connections and secure them Fuel tubing from tank is split or broken Replace the tubing 29 Symptom Cause Corrective action Symptom Cause Corrective action Poor response Deteriorated glowplug Replace glowplug Incorrect carburetor settings Readjust low r p m range with metering needle and mixture control valve Incorrect setting of transmitter Exponential function Check the transmi...

Page 16: ...14010 21914110 21913010 21816000 21817000 21915000 21982000 25381701 23731000 21911010 21931000 21912010 21824000 21917000 23763000 71641300 21427200 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Outer Head Inner Head Cylinder Piston Assembly Piston Pin Piston Pin Retainer 2pcs Connecting Rod Carburetor Complete Type 11K Carburetor Retainer Assembly Crankshaft Ball Bearing Front Crankcase Crankshaft Ball Be...

Page 17: ... 21816000 21817000 21915000 21884010 25381701 20810007 21458000 23731000 21911010 21931000 21912020 21824000 21917000 23763000 71641300 21427200 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Outer Head Inner Head Cylinder Piston Assembly Piston Pin Piston Pin Retainer 2pcs Connecting Rod Carburetor Complete Type 11L Carburetor Retainer Assembly Propeller Nut Drive Hub Crankshaft Ball Bearing Front Cra...

Page 18: ...110 21913010 21816000 21817000 21915000 21884010 25381701 20810007 23731000 21911010 21931000 21912030 21824000 21917000 23763000 71641300 21427200 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Outer Head Inner Head Cylinder Piston Assembly Piston Pin Piston Pin Retainer 2pcs Connecting Rod Carburetor Complete Type 11L Carburetor Retainer Assembly Propeller Nut Crankshaft Ball Bearing Front Crankcase Cra...

Page 19: ...8000 23731000 21911010 21931000 21912040 21824000 21922000 21901800 73008000 73008100 73008200 21923000 71641300 21427200 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 18 1 18 2 19 Outer Head Inner Head Cylinder Piston Assembly Piston Pin Piston Pin Retainer 2pcs Connecting Rod Carburetor Complete Type 11L Carburetor Retainer Assembly Propeller Nut Drive Hub Crankshaft Ball Bearing Front Crankcase ...

Page 20: ... 2 2 3 3 1 4 5 6 6 1 7 8 9 10 Description Code No No 22615000 22781800 27881820 21982700 21982620 27881820 21285901 21982100 21982210 21982540 21982520 23818430 21881950 22781800 Carburetor Rubber Gasket Ball Link No 5 Dust Cover Metering Needle Assembly Slide Valve No 14 Universal Nipple Assembly Carburetor Body w Thermo Insulator O Ring 2pcs Needle Valve Assembly Throttle Stop Screw O Ring S 2pc...

Page 21: ...S LIST 1 1 1 1 2 2 3 4 5 6 7 8 9 9 1 10 11 21285901 27881820 21881950 22681310 21884110 22481506 21884200 21283210 22681419 21481420 21982630 27881820 21982900 22615000 Description Code No No Needle Valve Assembly O Ring 2pcs No 14 Universal Nipple Assembly Throttle Stop Screw Carburetor Body w Thermo Insulator Rotor Spring Carburetor Rotor Dust Cover Throttle Lever Throttle Lever Fixing Nut Mixtu...

Page 22: ...72106361 72106042 T 1040SC L60 Tuned Silencer Assembly Tuned Silencer Body Exhaust Seal Ring 2pcs Joint Spring 3pcs Left side exhaust 72106370 22826140 72106371 72106042 T 1040SC R60 Tuned Silencer Assembly Tuned Silencer Body Exhaust Seal Ring 2pcs Joint Spring 3pcs Right side exhaust 43 O S GENUINE PARTS ACCESSORIES RACING ENGINE PARTS 72412000 72412100 72412200 Super Air Cleaner 202 Assembly 20...

Page 23: ...3300305 8mm 73300812 16mm 73301612 18mm 73301812 5pcs 3pcs 3pcs 3pcs Engine Mount Spacer 72404000 72103310 21427200 2pcs Super Joint Tube 15 Exhaust Seal Ring 45 3 0 cc 0 183 cu in 16 0mm 0 629 in 15 0mm 0 590 in 3 000 34 000 r p m 1 8 ps 1 83 hp 29 000 r p m 225 8g 7 96oz 25 4 39 81 2 15 1 34 8 29 5 UNF1 4 28 11 31 4 4 3 3 SPECIFICATIONS 18TZ P T THREE VIEW DRAWING Dimensions mm Displacement Bore...

Page 24: ...TZ T THREE VIEW DRAWING Displacement Bore Stroke Practical R P M Power output Weight Dimensions mm 47 25 4 39 81 2 15 1 34 8 11 6 M5x0 8 11 31 4 4 3 3 3 0 cc 0 183 cu in 16 0mm 0 629 in 15 0mm 0 590 in 3 000 34 000 r p m 1 8 ps 1 83 hp 29 000 r p m 222 4g 7 84oz SPECIFICATIONS 18TZ S T THREE VIEW DRAWING Displacement Bore Stroke Practical R P M Power output Weight Dimensions mm ...

Page 25: ...WING Displacement Bore Stroke Practical R P M Power output Weight Dimensions mm C Copyright 2005 by O S Engines Mfg Co Ltd All rights reserved Printed in Japan 60091630 061104 TEL 06 6702 0225 FAX 06 6704 2722 6 15 3 Chome Imagawa Higashisumiyoshi ku Osaka 546 0003 Japan U N E Q U A LLED QUALITY PRECISION PERFOR M A N C E E S T A BLISHING THE STANDARDS OF EXCELLE N C E URL http www os engines co j...