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RACING ENGINE PARTS

(71653000)

LC3

(72106172)

(73300305)

7 (73300712)

12 (73301212)

Dust Cap Set

For Carburetor Nipple

For Silencer

For Carburetor

Long Socket Wrench

With Plug Grip

(71521000)

O.S. Glow Plug

(21427200)

Exhaust Seal Ring

(2pcs.)

Manifold Spring (2pcs.)

O.S. GENUINE PARTS & ACCESSORIES

The specifications are subject to alteration for improvement without notice.

3.41cc (0.208 cu.in.)
17.0mm (0.669 in.)
15.0mm (0.590 in.)
3,000-35,000 r.p.m.
1.8 ps / 29,000 r.p.m.
243g (8.57 oz.)

■

Displacement
Bore

Stroke

Practical R.P.M.

Power output

Weight

SPECIFICATIONS

21TM (T-Maxx) THREE VIEW DRAWING

Dimensions (mm)

JAPAN

34.8

26.3

18.8

M7x1

31.4

4- 3.3

85.3

25.4

Содержание MAX-21TM

Страница 1: ...t any instructions supplied with the vehicle radio control equipment etc are accessible for checking at the same time 1 2 5 6 7 8 12 22 25 23 24 26 29 8 10 13 16 30 33 17 19 20 22 10 11 CONTENTS STARTING THE ENGINE RUNNING IN FINAL ADJUSTMENT CARBURETOR CLEANLINESS CARE AND MAINTENANCE CHECKING THE ENGINE TROUBLE SHOOTING ENGINE EXPLODED VIEW PARTS LIST CARBURETOR EXPLODED VIEW PARTS LIST O S GENU...

Страница 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...

Страница 3: ...tle 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 NOTES 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 engin...

Страница 4: ...ct running clearance when they reach operating temperature Near 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 ra...

Страница 5: ...ese engines are designed especially to power the T Maxx or Revo Purposely designed LC3 glow plug is supplied with the engine for improved power fuel economy and durability The carburetor offers easy handling as well as high performance 9 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 c...

Страница 6: ... Valve The Mixture Control Valve Four adjustable controls are provided on this carburetor For adjusting the mixture strength when the throttle is fully open For changing the mixture strength at mid speed and acceleration Do not rotate the screw more chan one turn The Throttle Stop Screw For setting the minimum idle speed For adjusting the mixture strength at part throttle and idle speed to obtain ...

Страница 7: ...e the R C type plug found most suitable after tests Recommended O S plugs are LC3 Carefully install plug finger tight before final tightening with the correct size plug wrench Install a plug suitable for the engine Use fuel containing a moderate percentage of nitromethane Do not run the engine too lean and do not leave the battery connected while adjusting the needle However plug life can be exten...

Страница 8: ... original engine Install the manifold supplied with the engine T Maxx Revo 15 Adjust the stopper end so that the throttle linkage may be made correctly Adjust the plastic ball end so that the throttle linkage may be connected correctly T Maxx Revo ...

Страница 9: ... 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 distance from the carburetor means that fuel head at the carburetor can vary and upset running Therefore it is recommended that a muffler pressurized fuel feed system be used Never run your vehicle without installing the air cleaner Dus...

Страница 10: ...of increased power If the engine stops at medium speeds close the Mixture Control Valve 30 The carburetor on this engine has been set at the starting setting when the engine leaves the factory Switch on the transmitter and check that all the linkage moves correctly 30 Needle The position of the needle valve when starting the engine Close the needle valve approx 30 after running the vehicle for eve...

Страница 11: ...ntrol position light smoke is visible during high speed running and the engine rpm increases smoothly during acceleration Remember that if the engine is operated with the fuel air mixture slightly too lean it will overheat and run unevenly As with all engines it is advisable to set both the needle valve and metering needle slightly on the rich side of the best rpm setting as a safety measure If th...

Страница 12: ...dard position Ball Link 11K 11K R 23 CARE AND MAINTENANCE 1 2 3 The minute particles of foreign matter that are present in any fuel may by accumulating and partially obstructing fuel flow cause engine performance to become erratic and unreliable O S Super Filters large and small are available as optional extras to deal with this problem One of these filters installed to the pickup tube inside your...

Страница 13: ... the bearing to exceed 120 C 248 F otherwise it may be damaged and rendered unserviceable Dirt and dust may lodge in marked places Optional extra 25 CHECKING THE ENGINE If the engine suffers a loss of performance after a long period of running it may be due to the wearing of parts It is suggested that the worn parts be replaced when the following symptoms are detected Engine sound changes and easi...

Страница 14: ...ce if necessary Incorrect servo linkage Connect correctly after setting servo at neutral Reverse rotating direction of starter box Mare sure it rotates counter clockwise seen from crankshaft side 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 glowplug Clogged fuel filter Air cleaner...

Страница 15: ...ng 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 transmitter s...

Страница 16: ...000 21921000 21931000 21912000 21922000 21921800 21911800 79860070 71653000 21427200 72103800 72106172 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Cylinder Head Retaining Screw 10pcs Heatsink Head Head Gasket 1pc Cylinder Piston Assembly Piston Pin Piston Pin Retainer 2pcs Connecting Rod Carburetor Complete Type 11K Carburetor Retainer Crankshaft Ball Bearing Front Crankcase Crankshaft Ball Bearing ...

Страница 17: ... 21921000 21931000 21912000 21922000 21921800 21911800 79860070 71653000 21427200 72103810 72106172 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 Cylinder Head Retaining Screw 10pcs Heatsink Head Head Gasket 1pc Cylinder Piston Assembly Piston Pin Piston Pin Retainer 2pcs Connecting Rod Carburetor Complete Type 11K R Carburetor Retainer Crankshaft Ball Bearing Front Crankcase Crankshaft Ball Bearing R...

Страница 18: ... 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 21982200 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...

Страница 19: ... 1 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 21982200 21982540 21982520 23818440 21881950 22781800 Carburetor Rubber Gasket Throttle Lever 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 2...

Страница 20: ...g 2pcs Manifold Spring 2pcs O S GENUINE PARTS ACCESSORIES The specifications are subject to alteration for improvement without notice 39 3 41cc 0 208 cu in 17 0mm 0 669 in 15 0mm 0 590 in 3 000 35 000 r p m 1 8 ps 29 000 r p m 243g 8 57 oz Displacement Bore Stroke Practical R P M Power output Weight SPECIFICATIONS 21TM T Maxx THREE VIEW DRAWING Dimensions mm JAPAN JAPAN 34 8 26 3 18 8 M7x1 31 4 11...

Страница 21: ...1 4 11 39 4 3 3 85 3 6 6 25 4 16 3 41cc 0 208 cu in 17 0mm 0 669 in 15 0mm 0 590 in 3 000 35 000 r p m 1 8 ps 29 000 r p m 243g 8 57 oz C Copyright 2007 by O S Engines Mfg Co Ltd All rights reserved Printed in Japan 60091960 010903 TEL 06 6702 0225 FAX 06 6704 2722 6 15 3 Chome Imagawa Higashisumiyoshi ku Osaka 546 0003 Japan URL http www os engines co jp ...

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