O.S. engine MAX-15CV-R Series, Owner'S Instructions Manual

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

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: ...se 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...

Page 6: ...mpression WITHOUT the glowplug battery being reconnected Do not attempt to disassemble the recoil starter of the 15CV 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: ...sher Drive Hub Crankcase Beam Mount Heatsink Head Cover Plate As delivered the engine has its carburetor lightly fit into its intake Secure it changing its angle according to the car chassis NOTE NOTE With this engine the piston will feel tight at the top of its stroke when the engine is cold This is normal The piston and cylinder are designed to achieve a perfect running clearance when they reach...

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

Page 9: ...V 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 carburetor 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 carburetor ...

Page 10: ...s 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 or...

Page 11: ...element 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 carburetor REPLACEMENT OF ELEMENT Insert beneath flange NOTES CONCERNING THE RECOIL STARTER 15CV 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: ...owing 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 Carefully ...

Page 13: ...t or 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 optim...

Page 14: ...tank a simple polyethylene squeeze bottle with a suitable spout is required CARBURETOR 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 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 vehicl...

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 caburetor In case of the 10E R caburetor Set the throttle stop screw so that the mini...

Page 17: ...lose 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 carburetor 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: ...rewed 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...

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: ...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 1521 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 72103150 72103160 For...

Page 23: ...5CV 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 C M2 6x12 C M2 6x7 Not included in 15CV R S t 9 0 1 2 3 4 5 6 7 8 9 0 q w e r 22 ...

Page 24: ...Bearing Front Carburetor Retainer Carburetor Complete Type 10C Connecting Rod Piston Pin Retainer 2pcs Piston Pin Cylinder Piston Assembly Heatsink Head Description Code No Carburetor Complete Type 10E R Propeller Nut Drive Hub Cover Plate e w q 0 9 8 7 6 5 4 3 2 1 72403120 72403210 21257000 21514010 21252000 21230020 72403200 71608001 21213000 21501030 22631020 21408000 20810007 21481700 21481020...

Page 25: ...15CV RX EXPLODED VIEW Type of screw C Cap Screw M Oval Fillister Head Screw F Flat Head Screw N Round Head Screw S Set Screw C M2 6x12 M M2 6x7 u 1 u 2 M M2 6x7 24 u 1 y 2 4 3 5 6 7 8 9 0 q w e r t ...

Page 26: ...onnecting Rod Piston Pin Retainer 2pcs Piston Pin Cylinder Piston Assembly Heatsink Head Description Code No Carburetor Complete Type 10E R Propeller Nut Drive Hub Starting Shaft Rear Adaptor No 5 Recoil Starter Assembly No 5 Recoil Starter Body No 5 One way Clutch Engine Mount Spacer 72403120 72403210 21421200 21514010 21252040 21230020 72403200 71608001 21421300 21251000 22631020 21408000 208100...

Page 27: ...Type of screw C Cap Screw M Oval Fillister Head Screw F Flat Head Screw N Round Head Screw S Set Screw 15CV R P EXPLODED VIEW C M2 6x12 C M2 6x7 26 1 2 3 4 5 6 7 8 9 0 q w ...

Page 28: ... 21286000 21255000 23817000 21806000 21503020 21504600 102 Cleaner Body 101 102 Filter Elements 6pcs Super Air Cleaner 102 W 3 filter elements Screw Set Glow Plug No 8 Gasket Set Crankshaft Crankshaft Ball Bearing Rear Crankcase Crankshaft Ball Bearing Front Carburetor Retainer Carburetor Complete Type 10C Connecting Rod Piston Pin Retainer 2pcs Piston Pin Cylinder Piston Assembly Heatsink Head De...

Page 29: ...er Gasket Ball 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 22615000 22781800 46066319 21285600 21285640 27881820 21285901 21285220 21286100 21286200 21286400 21881320 23818...

Page 30: ...1283210 22681419 21481420 21481600 0 1 0 9 8 7 6 5 4 3 2 1 7 1 7 2 0 2 22615000 No Carburetor Rubber Gasket Dust Cover Carburetor Body O Ring 2pcs Needle Valve Assembly Throttle Stop Screw Mixture Control Screw Description Code No Throttle Lever Fixing Nut 1 1 27881820 Throttle Lever Carburetor Rotor Rotor Spring Nozzle Assembly O Ring Locknut O Ring 2pcs Fuel Inlet 5 4 3 2 1 9 7 6 8 0 1 0 1 1 7 1...

Page 31: ... P M Power output Weight SPECIFICATIONS 15CV R THREE VIEW DRAWING Dimensions mm 39 25 12 8 83 9 71 1 41 70 15 25 27 5 M5x0 8 11 31 4 2 49 cc 0 152 cu in 15 2mm 0 598 in 13 7mm 0 539 in 4 000 36 000 r p m 1 2 bhp 31 000 r p m 195g 6 88oz 30 ...

Page 32: ...P M Power output Weight SPECIFICATIONS 15CV RX THREE VIEW DRAWING Dimensions mm 2 49 cc 0 152 cu in 15 2mm 0 598 in 13 7mm 0 539 in 4 000 36 000 r p m 1 2 bhp 31 000 r p m 253g 8 924oz M5X0 8 40 88 8 41 33 8 25 27 5 71 1 20 91 1 31 4 11 31 ...

Page 33: ...25 12 8 83 9 71 1 2 49 cc 0 152 cu in 15 2mm 0 598 in 13 7mm 0 539 in 4 000 36 000 r p m 1 2 bhp 31 000 r p m 193 2g 6 82oz 15CV R P THREE VIEW DRAWING Dimensions mm Displacement Bore Stroke Practical R P M Power output Weight SPECIFICATIONS 32 ...

Page 34: ...eserved Printed in Japan 120101 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 ...