O.S. engine MAX-12CV-R Owner'S Instruction Manual Download | Manualshive

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Type of screw C

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Cap Screw M

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Oval Fillister-Head Screw

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Flat Head Screw N

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Round Head Screw S

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Set Screw

12CV-R(P) EXPLODED VIEW

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C . M 2 . 6 x 7

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Summary of Contents for MAX-12CV-R

Page 1: ...ontained 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 Keep these instructions in a safe place so that you may readily refer to them whenever necessary It is suggested that any instructions supplied with the vehicle radio control equipment etc are accessible for checking at the same time ...

Page 2: ...tc CARBURETTOR CONTROLS PRESSURIZED FUEL SYSTEM STARTING THE ENGINE RUNNING IN Breaking in FINAL ADJUSTMENT CARBURETTOR CLEANLINESS CARE AND MAINTENANCE O S GENUINE PARTS ACCESSORIES ENGINES EXPLODED VIEW PARTS LIST CARBURETTOR EXPLODED VIEW PARTS LIST THREE VIEW DRAWING 7 8 IF THE ENGINE FAILS TO START 2 5 17 19 20 21 17 18 22 27 28 29 30 32 8 10 10 11 11 12 12 13 13 14 15 16 14 6 1 ...

Page 3: ...equest that these instructions are also passed on to its new owner SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O S ENGINE The advice which follows applies basically to ALL MODEL ENGINES and is grouped under two headings according to the degree of damage or danger which might arise through misuse or neglect WARNINGS NOTES These cover events which might involve serious in extreme circumstances even ...

Page 4: ...es of sparks or anything else which might ignite it Do not smoke or allow anyone else to smoke near to it Never operate your engine in an en closed space Model engines like automobile engines exhaust deadly carbon monoxide Run your engine only in an open area Model engines generate considerable heat Do not touch any part of your engine until it has cooled Contact with the muffler silencer cylinder...

Page 5: ... of the more powerful highspeed engines may eventually impair your hearing and such noise is also likely to cause annoyance to others over a wide area The wearing of safety glasses is also strongly recommended Take care that the glowplug clip or battery leads do not come into contact with rotating parts Also check that the linkage to the throttle arm is secure For their safety keep all onlookers e...

Page 6: ...mpression WITHOUT the glowplug battery being reconnected Do not attempt to disassemble the recoil starter of the 12CV RX If you do so the very strong spring inside will be suddenly ejected This can be very dangerous Do not extend the starter cord more than 45cm 18 Do not abruptly release the operating handle Allow the cord to rewind smoothly while still holding the handle Pull the operating handle...

Page 7: ...into cylinder head making sure that it is not cross threaded before tightening firmly BASIC ENGINE PARTS The MAX 12CV R and MAX 12CV RX are high perfomance engines for 1 10 class R C racing cars There are two verions the one with 10E R carburettor and the other with 10C carburettor The MAX 12CV R has a conventional crankshaft while the MAX 12CV R P employs a special crankshaft with integral pilot ...

Page 8: ...ith a needle file so that screws enter vertically Chassis Chamfer inside edges of bearers INSTALLATION OF THE CARBURETTOR As delivered the engine has its carburettor lightly fit into the intake boss Secure it as follows Loosen the retainer screw rotate the carburettor to its correct position and make sure that it is pressed well down into the intake boss compressing the rubber gasket before retigh...

Page 9: ... series model car engines It contains specially impregnated filter elements which prevent highly damaging dust and dirt from being drawn into the engine through the carburettor yet allow engine performance to be maintained for longer periods between element renewals The Type 102 air cleaner has a special rubber body which facilitates easy yet secure fitting with positive sealing at the carburettor...

Page 10: ...es easier installation in cars where available space may be restricted Position the air cleaner correctly so that it does not foul the cylinder head or obstruct the needle valve AIR CLEANER ELEMENTS Lower Filter Element Upper Filter Element Insert beneath flanges Replacement elements arealreadyimpregnated with filter oil As this oil is very sticky take cere when handling elements to prevent dust o...

Page 11: ...lement with a new one after not more than one hour of running time Always remove contaminated elements carefully to ensure that dirt cannot enter the carburettor REPLACEMENT OF ELEMENT Insert beneath flange NOTES CONCERNING THE RECOIL STARTER 12CV RX ONLY REMINDER Do not attempt to disassemble the recoil starter If you do so the very strong spring inside will be suddenly ejected This can be very d...

Page 12: ...llowing higher rpm the plug becomes hotter and appropriately fires the fuel air charge earlier conversely at reduced rpm the plug become cooler and ignition is retarded Since the compatibility of glowplug and fuel may have a marked effect on performance and reliability it may be worthwhile to choose the R C type plug found most suitable after tests Recommended O S plugs are No 8 A5 and A3 Carefull...

Page 13: ... plug body has corroded Engine tends to cut out when idling Starting qualities deteriorate As a starting point we recommend a fuel containing 10 20 nitromethane changing to a fuel containing more nitro only if necessary When the nitro content of the fuel is increased or the brand of fuel is changed it is advisable to initially run the engine with a richer needle valve setting so that the optimum s...

Page 14: ...ank a simple polyethylene squeeze bottle with a suitable spout is required CARBURETTOR CONTROLS 10C The Needle Valve The Mixture Control Screw The Throttle Stop Screw For setting the minimum idling speed Needle Valve Mixture Control Valve Assembly Screw Throttle Stop Screw Ball Link NOTE Readjustment may be necessary occa sionally to allow for changes in fuel for mula gear ratio or clutch engageme...

Page 15: ...Valve Assembly Screw Throttle Stop Screw 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 carburettor means that fuel head at the carburettor can vary and upset running Therefore it is recommended that a muffler pressurized fuel feed system be used Never run your vehi...

Page 16: ...plug battery lead to heat the plug filament and start the engine Re check the needle valve and throttle settings Turn the needle valve clockwise slowly and gently until it stops This is the fully closed position Do not use force to turn the needle valve beyond this point Open Close Needle Valve In case of the 10C caburettor In case of the 10E R caburettor Set the throttle stop screw so that the mi...

Page 17: ...ose the needle valve approx 30 after running the vehicle for one full tank of fuel Repeat this procedure several times 3 0 3 0 To stop the engine close the throttle to idling speed then shut it off completely with the trim lever on the transmitter To cut off the fuel supply pinch the fuel delivery tube to the carburettor If the engine should need to be disassembled e g for cleaning or minor parts ...

Page 18: ...ng note of the improvement in performance Continue with further runs gradually reducing the Needle Valve setting and aiming to achieve the highest straight line speed Remember however that if the Needle Valve is shut down too far the engine will overheat and accompanied by visibly diminished exhaust smoke the model will lose speed At this point throttle down immediately stop the vehicle and reopen...

Page 19: ...der no load conditions which in any case are not advised since such operation carries the risk of seriously damaging the engine through over revving and overheating With the optimum mixture control position light smoke is visible during high speed running and the engine revolutions increase smoothly during acceleration Remember that if the engine is operated with the fuel air mixture slightly too ...

Page 20: ...wed in or out too far and thereby moved beyond its effective adjustment range Its basic position can be found by first rotating the Mixture Control Valve until its slotted head is flush with the carburettor body The valve is then screwed in exactly 2 5 turn to re establish its neutral position Mixture Control Valve Carburettor Body First rotate the Mixture Control Valve until its slotted head is f...

Page 21: ...nergize the glow plug and try to restart the engine to burn off any fuel that may remain inside the engine Repeat this procedure until the engine fails to fire Do this while the engine is still warm Then inject some after run oil into the engine and rotate the engine with an electric starter for 4 to 5 seconds to distribute the oil to all the working parts Note 5 Do not inject after run oil into t...

Page 22: ...pider HPI Nitro For Tamiya TG10 For Tamiya TGX No 8 A3 A5 Super Air Cleaner 101 102 Filter Elements 6pcs Super Joint Tube 15 T 1020 Tuned Silencer Crankshaft Clamp 1012 Long Socket Wrench With Plug Grip φ3 73300305 φ7 73300712 φ10 73301012 10C Automatic Carburettor 21286000 Dust Cap Set For Carburettor Nipple For T 1020 Tuned Silencer For 10C 10E R Carburettor 102S 102 72403200 For MUGEN MTX 72103...

Page 23: ...12CV R EXPLODED VIEW Type of screw C Cap Screw M Oval Fillister Head Screw F Flat Head Screw N Round Head Screw S Set Screw Not included in 12CV R S 1 2 3 4 5 6 7 8 9 0 q w e r t C M2 6x12 C M2 6x7 22 ...

Page 24: ... Cleaner 102 W 3 filter elements off road Screw Set Glow Plug No 8 Gasket Set Crankshaft Crankshaft Ball Bearing Rear Crankcase Crankshaft Ball Bearing Front Carburettor Retainer Carburettor Complete Type 10C Connecting Rod Piston Pin Retainer 2pcs Piston Pin Cylinder Piston Assembly Heatsink Head Description Code No Carburettor Complete Type 10E R Propeller Nut Drive Hub Cover Plate Super Air Cle...

Page 25: ...ODED VIEW Type of screw C Cap Screw M Oval Fillister Head Screw F Flat Head Screw N Round Head Screw S Set Screw Not included in 12CV RX S 0 1 2 3 4 5 6 7 8 9 0 q w e y C M2 6x12 r t M M2 6x7 u u 1 u 2 M M2 6x7 12 ...

Page 26: ...arburettor Complete Type 10E R Propeller Nut Drive Hub Super Air Cleaner 102S W 3 filter elements on road 102S Cleaner Body 101 102 Filter Elements 6pcs Crankshaft For 12CV RX S e w q 0 9 8 7 6 5 4 3 2 1 7 2403 120 7 2403 212 2 1421 200 2 1214 000 2 1252 040 2 1230 020 7 2403 202 7 1608 001 2 1421 300 2 1501 030 2 2631 020 2 1408 000 2 0810 007 2 1481 700 2 1481 020 2 1286 000 2 1255 000 2 3817 00...

Page 27: ...Type of screw C Cap Screw M Oval Fillister Head Screw F Flat Head Screw N Round Head Screw S Set Screw 12CV R P EXPLODED VIEW 1 2 3 4 5 6 7 8 9 0 q w C M2 6x12 C M2 6x7 26 ...

Page 28: ...all Bearing Rear Crankcase Crankshaft Ball Bearing Front Carburettor Retainer Carburettor Complete Type 10C Connecting Rod Piston Pin Retainer 2pcs Piston Pin Cylinder Piston Assembly Heatsink Head Cover Plate 7 2403 120 7 2403 212 2 1257 000 2 1214 000 2 1252 020 2 1230 020 7 2403 202 7 1608 001 2 1213 000 2 1501 030 2 2631 020 2 1481 700 2 1286 000 2 1255 000 2 3817 000 2 1256 000 2 1253 000 2 1...

Page 29: ...ll Link No 4 Dust Cover Metering Needle Assembly Slide Valve Slide Valve Guide Screw Carburetor Body O Ring 2pcs Needle Valve Assembly Throttle Stop Screw O Ring S 2pcs O Ring L 2pcs Mixture Control Valve Assembly Description Code No 5 4 3 2 1 9 7 6 8 0 1 1 1 2 3 1 C M3 5x8 2 2615 000 2 2781 800 4 6066 319 2 1285 600 2 1285 640 2 7881 820 2 1285 901 2 1285 220 2 1286 100 2 1286 200 2 1286 400 2 18...

Page 30: ...0 2 1283 210 2 2681 419 2 1481 420 2 1481 600 0 1 0 9 8 7 6 5 4 3 2 1 7 1 7 2 0 2 2 2615 000 No Carburettor Rubber Gasket Dust Cover Carburettor Body O Ring 2pcs Needle Valve Assembly Throttle Stop Screw Mixture Control Screw Description Code No Throttle Lever Fixing Nut 1 1 2 7881 820 Throttle Lever Carburettor Rotor Rotor Spring Nozzle Assembly O Ring Locknut O Ring 2pcs Fuel Inlet 5 4 3 2 1 9 7...

Page 31: ... P M Power output Weight SPECIFICATIONS 12CV R THREE VIEW DRAWING Dimensions mm 2 11 cc 0 129cu in 14 0 mm 0 551in 13 7 mm 0 539in 4 000 36 000 r p m 1 0 bhp 31 000 r p m 200g 7 05oz 39 25 12 8 83 7 70 9 41 70 15 25 27 5 M5x0 8 11 31 4 30 ...

Page 32: ...11 31 4 40 27 5 12CV RX THREE VIEW DRAWING Dimensions mm Displacement Bore Stroke Practical R P M Power output Weight SPECIFICATIONS 2 11 cc 0 129cu in 14 0 mm 0 551in 13 7 mm 0 539in 4 000 36 000 r p m 1 0 bhp 31 000 r p m 258g 9 10oz 31 ...

Page 33: ... Displacement Bore Stroke Practical R P M Power output Weight SPECIFICATIONS 2 11 cc 0 129cu in 14 0 mm 0 551in 13 7 mm 0 539in 4 000 36 000 r p m 1 0 bhp 31 000 r p m 198g 6 99oz 34 8 79 3 15 25 27 5 UNF1 4 28 11 31 4 39 25 12 8 83 7 70 9 32 ...

Page 34: ...eserved Printed in Japan 070101 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 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 ...

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