Generac MAX-12CV-X User's Manual
Contents
1. Do not abruptly release the operating handle Allow the cord to rewind smoothly while still holding the handle e Pull the operating handle straight out when starting the engine so that the cord does not rub against the vehicle body or engine This will help prevent the cord from being damaged by abrasion or engine heat 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 to abruptly restart if it is rotated over compression WITHOUT the glowplug battery being reconnected The MAX 12CV and MAX 12CV X are high performance engines for 1 10 class R C racing cars The MAX 12CV X is equipped with a built in recoil starter system which eliminates the need for a separate electric and starter battery 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 their normal running temperatures INSTALLING THE GLOWPLUG Fit washer to glowplug and insert carefully into cylinder head making sure that it is not cross threaded before tightening firmly Glow plug Washer BASIC ENGINE PARTS Heatsink Head Recoil Starter Beam Mount Assembly No 5 Crankcase Drive Hub Crankshaft Max 12CV X ENGINE INSTALLATION Make sure that the veh2. PRESSURIZED FUEL SYSTEM e 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 e Never run your vehicle without fitting the air cleaner Dust and dirt that may otherwise be drawn into the engine will rapidly shorten its life Connect suitable length of Silicone tubing between fuel tank and silencer Fuel Tank Jeg Silencer STARTING THE ENGINE amp RUNNING IN Breaking in The following procedure is suitable for these engines when the O S T 1020 tuned silencer and a fuel containing up to 30 nitromethane are used e Use the same fuel as is to be employed for all initial running and containing NOT LESS THAN 18 lubricant e Set the throttle stop screw so that the minimum throttle opening idle setting is approximately 1 0mm e DO NOT energize glowplug but apply electric starter to draw fuel to carburettor e Temporarily remove the glowplug to check that it glows bright red when energized e 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
3. e Open the Needle Valve 2 turns from the fully closed e Now connect glowplug battery lead to heat the plug filament and start the engine ll In case of the 12CV X e Push the choke button on the fuel tank several times to deliver the fuel to the Open Needle Valve position carburetor Do not over Incase of the 10C caburettor Approx 0 3 0 5mm prime i leg Starter cannot be pulled e Switch on the transmitter and pu receiver and set the throttle very slightly opened from the idling position e Pull the starter handle briskly straight out several times to start the engine In case of the 10E R caburettor approx 1mm Throttle Stop Screw E WW Si aa vam Rotating Via Direction l Starter Handle Remember Itis vitally important to set the throttle at the correct position before attempting to start the engine lf the engine is allowed to run with the throttle too far open under no load conditions it will rapidly overheat and may be seriously damaged When the engine starts first allow it to operate in short runs atthe very rich starting settings with the glowplug battery still connected and with its 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 Next disconnect the glowplug battery and try
4. OS meng vu CN amp 12CV X SERIES OWNER S INSTRUCTION MANUAL 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 e Also please study the entire contents of this instruction manual so as to familiarize yourself with the controls and other features of the engine e Keep these instructions in a safe place so that you may readily refer to them whenever necessary e It is suggested that any instructions supplied with the vehicle radio control equipment etc are accessible for checking at the same time CONTENTS SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O S ENGINE 2 5 IF THE ENGINE FAILS TO START 16 INTRODUCTION BASIC ENGINE PARTS 6 FINAL ADJUSTMENT ever 16 17 INSTALLATION 7 8 CARBURETTOR CLEANLINESS 17 18 AIR CLEANER TYPE102 ee 8 9 CARE AND MAINTENANCE 19 NOTES CONCERNING EXPLODED VIEW amp THE RECOIL STARTER 9 10 ENGINE PARTS LIST 20 23 ee TER CARBURETOR EXPLODED VIEW amp PARTS LIST 24 25 TOOLS ACCESSORIES etc 11 12 O S GENUINE PARTS amp CARBURETTOR CONTROLS 12 13 ACCESSORIES 26 PRESSURIZED FUEL SYSTEM seess 13 THREE VIEW DRAWING e 27 STARTING THE ENGINE amp RUNNING IN Breaking in 14 15 L SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O S ENGINE Remember that your engine is not a
5. 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 If at some future date your O S engine is acquired by another person we would respectfully request that these instructions are also passed on to its new owner W 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 These cover events which These cover the many other might involve serious in possibilities generally less obvious extreme circumstances even sources of danger but which under fatal injury certain circumstances may also cause damage or injury N WARNINGS e Model engine fuel is poi sonous Do not allow it to come into contact with the eyes or mouth Always e Never operate your engine in an en closed space Model engines like automobile engines exhaust deadly carbon monoxide Run your engine store it in a clearly marked container and out of the reach of children Model engine fuel is also highly flammable Keep it away from open flame excessive heat sources of sparks or anything else which might ignite it Do not smoke or allow anyone else to smoke near to it only in an open area e Model engines generate con
6. FAILS TO START Check the following e Glowplug battery discharged or glowplug defunct e Fuel not reaching carburetor e Engine flooded Do not over prime This could also cause hydraulic lock and damage the engine on application of the electric starter Remove glowplug close needle valve and apply starter to pump out surplus fuel At this time cover the plug hole with a rag so that splashing fuel will not get into your eyes or mouth MAX 12CV X FINAL ADJUSTMENT e 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 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 the Needle Valve 30 Having established the optimum Needle Valve setting check the Mixture Control Valve setting as follows With the engine running close the throttle and allow it to idle for about five seconds then reopen the throttle fully If at this point the engine puffs out an excessive amount of smoke and the veh
7. 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 4 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 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 5 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 The rear crankshaft bearing of this engine uses a special plastic retainer If the front housing needs to be heated to remove or replace the bearing do not allow the bearing to exceed 120 C 248 F otherwise it may be damaged and rendered unserviceable MAX 12CV EXPLODED VIEW o C M2 6x7 m fon News ummm WO Gomm WU C M2 6x12 SA F Flat Head Screw N Round Head Screw S Set Screw Type of screw C Cap Screw M Oval Fillister Head Screw MAX 12CV ENGINE PARTS LIST No Code No Description 2 1404 300 Heatsink Head RED 2 1404 310 Heatsink Head GREY 2 1404 320 Heatsin
8. power outputisincreased uptoacertainpoint as the nitromethane content of the fuelis increased As astarting 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 fuelis changed itis advisable to initially run the engine with a richer needle valve setting so that the optimum setting for the new fuel may be rechecked as described in the RUNNING IN paragraphs When engines are run at very high speeds and on high nitro fuels glowplug elements do not last so long Reminder 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 children Model engine fuel is also highly flammable Keep it away from open flame excessive heat sources of sparks or anything else which might ignite it BATTERY INTEGRATED GLOWPLUG HEATER Commercialy available handy glowplug heater in which the glowplug battery and battery leads are integrated ELECTRIC STARTER AND STARTER BATTERY Use an electric starter with 12 volt Wz r ZT battery for starting the MAX 12CV LE LONG SOCKET WRENCH Recommended for easy removal and replacement of the angled and recessed glowplug the O S Long Socket Wrench incorporates a special grip FUEL BOTTLE OR PUMP For filling the fuel tank a simple polyethylene
9. running the car on the track If the engine stalls open the throttle fractionally but try to keep the engine running as rich as possible if it stops because of being excessively over rich close the Needle Valve 30 and try again e Run the car on the track until one tank of fuel has been consumed then close the Needle Valve 30 and run the car for another full tank of fuel Repeat this procedure until 5 more tanks of fuel have been consumed during which time the throttle may be opened for brief bursts of increased power If the engine stops at medium speeds close the Mixture Screw 45 90 The position of the needle valve 80 when starting the engine Needle D Close the needle valve approx 30 after running the vehicle for one full tank of fuel Repeat this procedure several times e 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 Remember If the engine should need to be disassembled e g for cleaning or minor parts replacement it is advisable to return the Needle Valve to the original rich starting setting and check whether further running in time is required before the car is raced again In the event of any major working parts e g piston cylinder liner assembly being replaced the complete running in should be repeated IF THE ENGINE
10. squeeze bottle with a suitable spout is required SILICONE TUBING Heatproof silicone tube of approx 5mm od and 2mm i d is required for the connection between the fuel tank and engine CARBURETOR CONTROLS 10C Three adjustable controls are provided on this carburetor The Needle Valve For adjusting the mixture strength when the throttle is fully open The Mixture Control Screw For adjusting the mixture strength at part throttle and idling speeds to obtain steady idling and smooth acceleration to mid speeds The Throttle Stop Screw For setting the minimum idling speed NOTE N Ball Link eedle Valve Readjustment may GC be necessary occa sionally to allow for changes in fuel for mulae gear ratio or clutch engagement point Throttle Stop Screw Mixture Control Valve Assembly Screw CARBURETOR CONTROLS 10E R Three adjustable controls are provided on this carburetor The Needle Valve For adjusting the mixture strength when the throttle is fully open The Mixture Control Screw For adjusting the mixture strength at part throttle and idling speeds to obtain steady idling and smooth acceleration to mid speeds The Throttle Stop Screw For setting the minimum idling speed NOTE Readjustment may be necessary occa sionally to allow for changes in fuel for mula gear ratio or clutch engagement point Mixture Control Valve Assembly Screw
11. Head BLUE 2 1404 330 Heatsink Head NATURAL 2 1404 000 12CV Machine Head GOLD 3 21203 011 Cylinder amp Piston Assembly 21206 000 Piston Pin Gei 21205 040 Connecting Rod ei 21286 000 Carburettor Complete Type 10C 21481 020 Carburettor Complete Type 10E R ei 21481 700 Carburettor Retainer oi 20810 007 Propeller Nut 2 1408 000 Drive Hub Di 22631 019 Crankshaft Ball Bearing Front 2 1401 000 Crankcase RED 2 1401 010 Crankcase GREY 2 1401 020 Crankcase BLUE 2 1401 030 Crankcase NATURAL Dei 2 1230 000 Crankshaft Ball Bearing Rear G 21202 000 Crankshaft Zei 21214 000 Gasket Set Dei 21421 200 Starting Shaft GD 21421 100 Rear Adaptor Dei 21313 030 Screw Set 7 3003 000 No 5 Recoil Starter Assembly Dei 7 3003 100 No 5 Recoil Starter Body 3 2 7 3003 200 No 5 One way Clutch 7 2404 000 Engine Mount Spacer 7 1605 300 Glow Plug A3 7 2403 200 Super Air Cleaner 102 W 3 filter elements 7 2403 210 102 Cleaner Body 7 2403 120 101 102 Filter Elements 6pcs The specifications are subject to alteration for improvement without notice 10C CARBURETOR EXPLODED VIEW amp PARTS LIST I LO Type of screw C Cap Screw M Oval Fillister Head Screw F Flat H
12. NES mraco Lro 6 15 3 Chome Imagawa Higashisumiyoshi ku Osaka 546 0003 Japan TEL 06 6702 0225 FAX 06 6704 2722 URL http www os engines co jp Copyright 2000 by O S Engines Mfg Co Ltd All rights reserved Printed in Japan 120104
13. Rotate the retainer screw gently until it stops then tighten a further 60 90 Do not overtighten the screw as this will damage the carburetor body Rotate the retainer nut gently until it stops Tighten a further 60 90 AIR CLEANER TYPE 102 This is a heavy duty wet type air cleaner that has been developed specifically for the O S MAX CV 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 air intake INSTALLATION OF AIR CLEANER e Carefully clean the carburetor 5 removing any old adhesive or sealant that may have been previously used on the outside of the air intake e Press the air cleaner body firmly over the carburetor air intake Make sure that the outer rim of the air intake engages the internal annular groove in the air cleaner failure to do so may result in the air cleaner falling off See sketch right O 80 amp e Position the air cleaner correctly so that it does not foul the cylinder head or obstruct the needle valve AIR CLEANER ELEMENTS when handling elements to prevent dust or dirt from adherin
14. ead Screw N Round Head Screw S Set Screw O Code No 2 1285 600 Description Mixture Control Valve Assembly Ra 4 6066 319 O Ring L 2pcs O2 2 2781 800 O Ring S 2pcs 2 1285 640 Throttle Stop Screw 2 1285 901 Needle Valve Assembly 1 2 7881 820 O Ring 2pcs 2 1286 100 Carburetor Body 2 1285 220 Slide Valve Guide Screw 2 1286 200 Slide Valve 2 1286 400 Metering Needle Assembly 2 1881 320 Dust Cover 2 3818 420 Ball Link No 4 Di 2 2615 000 Carburettor Rubber Gasket without notice The specifications are subject to alteration for improvement 10E R CARBURETOR EXPLODED VIEW amp PARTS LIST Lg No Code No Description 21481 600 Mixture Control Screw 1 27881 820 O Ring 2pcs 21481 420 Throttle Lever Fixing Nut 22681 419 Throttle Lever 21283 210 Dust Cover 21481 200 Carburetor Rotor 22481 506 Rotor Spring 21283 962 Nozzle Assembly 1 2 4881 824 O Ring 2 2 1283 961 Locknut 21481 120 Carburetor Body 2 2681 310 Throttle Stop Screw 21481 900 Needle Valve Assembly 1 27881 820 O Ring 2pcs 2 2 1481 950 Fuel Inlet 22615 000 Carburetor Rubber Gasket The specif
15. g to them If your fingers become contaminated wash them with soap and water e Replacement elements Lower Filter Upper Filter are already impregnated Element Element with filter oil As this oil is 7 S very sticky take cere Insert beneath flanges e During storage the oil may have become unevenly dispersed through the elements This will be indicated if the blue colour of the element material appears patchy In this case place the elements in a small plastic bag and gently rub them between finger and thumb to redistribute the oil REPLACEMENT OF ELEMENTS elt is advisable to replace the upper filter element with a new one after not more than one hour of running time It is not necessary to discard the lower element as frequently but be sure to change it when it becomes soiled Always remove contaminated elements carefully to ensure that dirt cannot enter the carburettor NOTES CONCERNING THE RECOIL STARTER REMINDER 12CV X ONLY 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 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 straight out when starting the engine so that the cord does not rub against the vehicle body or engine This will
16. help prevent the cord from being damaged by abrasion or engine heat Try to avoid spilling fuel over the starter unit and its cord Some fuels have a detrimental effect on these parts The starter prevents the engine from being rotated 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 NOTE Because in the interests of personal safety dismantling of the starter mechanism is strongly discouraged the Recoil Starter is available for replacement only as a pre assembled unit However some related parts such as Starting Shaft and Rear Adaptor are obtainable separately See Parts List GLOWPLUG 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 A3 A5 and No8 Carefully fit plug finger tight before final tightening with the correct size plug wrench The role of the glowplug With a glowplug engine ignition is initiated by the application of a 1 5 volt power source When the battery is disconnected the heat retained within the combustion chamber remains sufficient to keep the plug filament glowing thereby continuing to keep the engine running Ignition timing is automatic under reduced load allowing higher rpm the plug becomes hotter and ap
17. ications are subject to alteration for improvement withou notice LLL ZZ OS GENUINE PARTS amp ACCESSORIES RACING ENGINE PARTS E O S Glow Plug M 10C Automatic W12CV E Exhaust Header Pipes 7 No 8 i Carburettor Machine Head For Kyosho Super10 For Tamiya TGX Ee 21286000 BLUE 72001110 72103110 72103120 71605300 RED 72001100 For Kyosho V ONER S For Tamiya TG10 A5 72103160 72103130 71605100 LD For Kyosho Spider amp eae T E Super Air Cleaner 102S HPI Nitro 72103140 Kee 72403202 S X M 101 102 Filter Elements ue ge 031 50 72403120 6pcs E T 1020 E Super Joint Tube 15 W Dust Cap Set E Long Socket Wrench Tuned Silencer 72103310 03 73300305 With Plug Grip 72103020 For Carburettor Nipple 71521000 07 73300712 For T 1020 Tuned Silencer E Crankshaft Clamp 610 73301012 1012 ZAN For 10C 10E R 71530100 N Carburettor iva 12CV 12CV X THREE VIEW DRAWING Dimensions mm SPECIFICATIONS E Displacement 2 11 cc 0 129cu in H Bore 14 0 mm 0 551in E Stroke 13 7 mm 0 539in E Practical R P M 3 000 30 000 r p m E Power output 0 56 bhp 29 000 r p m E Weight 2119 7 450z 12CV 269g 9 500z 12CV X 190g 6 700z 12CV Hyper 248g 8 750z 12CV X Hyper 35 5 _11 27 5 41 33 5 17 6 90 6 74 6 12CV MEMO QUAY PRECISION De Bue NG THE stanaRDS OF a GS ENGI
18. icle does not accelerate smoothly and rapidly it is probable that the idling mixture is too rich eln this case turn the Mixture Control Valve clockwise 45 90 If on the other hand the engine tends to speed up momentarily and then cut out abruptly when the throttle is opened the idling mixture is too lean Correct this by turning the Mixture Control Valve counter clockwise 45 90 NOTE Mixture Control Valve adjustment should be made in steps of not more than 45 90 carefully checking the effect on throttle response of each small adjustment e Carry out adjustments patiently under actual running conditions until the engine responds quickly and positively to the throttle control Warning Mixture adjustments whether via the Mixture Control Valve or the Needle Valve cannot be made accurately under 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 e 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 lean it will overheat and run unevenly As with all engines it is advisable to set both needle valve and mixture control screw very slightly on the rich side of the best rpm setting as a safety measure If the engine
19. icle s engine mounting surfaces are level and in the same plane Poor installation may cause distortion of the crankcase bearings etc resulting in erratic running and loss of performance The recommended screws for securing the engine are 3mm or 4 40 steel Allen hexagon socket type If existing holes in the engine mount do not align perfectly with engine mounting lugs enlarge them slightly with a needle file so that screws enter vertically Avoid forcing the screws Secure with locknuts If the bottom of the recoil starter housing would otherwise touch the car chassis fit the engine mount spacers supplied between the engine s mounting lugs and the engine mount Use the M3x15 screws provided With some vehicles it may be necessary to make minor trimming modifications to chassis or body when fitting the engine NOTE Where spacers are supplied joined in pairs see sketch separate them as shown Either face may be placed downwards Chamfer inside edges of bearers Mount Spacer Separate ojoo e Engine Mount Engine Mount Spacer INSTALLATION OF THE CARBURETOR As delivered the engine has its carburetor lightly fit into the intake boss Secure it as follows 1 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 retightening screw 2
20. k Head BLUE 2 1404 330 Heatsink Head NATURAL CG 21404 000 12CV Machine Head GOLD 21203 011 Cylinder amp Piston Assembly 2 1206 000 Piston Pin 2 1205 040 Connecting Rod 21286 000 Carburettor Complete Type 10C CH 21481 020 Carburettor Complete Type 10E R ei 21481 700 Carburettor Retainer 20810 007 Propeller Nut G 2 1408 000 Drive Hub G amp D 22631 019 Crankshaft Ball Bearing Front 2 1401 000 Crankcase RED 2 1401 010 Crankcase GREY 2 1401 020 Crankcase BLUE 2 1401 030 Crankcase NATURAL Gei 2 1230 000 Crankshaft Ball Bearing Rear _ 2 1202 010 Crankshaft Dei 21214 000 Gasket Set 2 1407 000 Cover Plate RED Gei 2 1407 010 Cover Plate GREY 2 1407 030 Cover Plate NATURAL GD 21213 000 Screw Set 7 1605 300 Glow Plug A3 7 2403 200 Super Air Cleaner 102 W 3 filter elements 7 2403 210 102 Cleaner Body 7 2403 120 101 102 Filter Elements 6pcs The specifications are sul bject to alteration for improvement without notice MAX 12CV X EXPLODED VIEW C M2 6x12 ok SS u 03 M M2 6x7 ER F Flat Head Screw N Round Head Screw S Set Screw Type of screw C Cap Screw M Oval Fillister Head Screw MAX 12CV X ENGINE PARTS LIST No Code No Description 2 1404 300 Heatsink Head RED 2 1404 310 Heatsink Head GREY 2 1404 320 Heatsink
21. propriately fires the fuel air charge earlier conversely at reduced rpm the plug become cooler and ignition is retarded Glowplug life Particularly in the case of very high performance engines glowplugs must be regarded as expendable However plug life can be extended and engine performance maintained by careful use i e e Install a plug suitable for the engine e Use fuel containing a moderate percentage of nitromethane unless more is essential for racing events e Do not run the engine too lean and do not leave the battery connected while adjusting the needle When to replace the glowplug Apart from when actually burned out a plug may need to be replaced because it no longer delivers its best performance such as when e Filament surface has roughened and turned white e Filament coil has become distorted e Foreign matter has adhered to filament or plug body has corroded e Engine tends to cut out when idling e Starting qualities deteriorate TOOLS ACCESSORIES etc The following items are necessary for operating the engine FUEL Use only top quality methanol based model engine fuel For consistent performance and long engine life it is advisable to use fuel containing AT LEAST 18 lubricant This engine is designed to run on both low and high nitromethane content fuels i e from mild mixtures containing a few percent of nitromethane up to high speed racing fuels containing 40 nitromethane Generally
22. ral position In case of the 10C caburetor First rotate the Mixture Control Valve until its slotted head is en flush with the carburetor body Then screw the valve in exactly 2 5 turn This is the standard position Mixture Control Valve Carburettor Body In case of the 10E R caburetor First rotate the Mixture Control Valve until its slotted head is flush with the carburetor body Then screw the valve in exactly 0 5 turn This is the standard position Throttle Lever Mixture Control Valve Carburettor Body CARE AND MAINTENANCE 1 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 fitted to the outlet tube inside your refueling container will prevent the entry of foreign material into the fuel tank It is also recommended that a good in line filter be installed between the tank and carburetor 2 Do not forget to clean the filters regularly to remove dirt and lint that accumulate on the filter screens Also clean the carburetor itself occasionally wo At the end of each operating session drain out any fuel that may remain in the fuel tank Afterwards energize the glow plug and try to restart the engine to burn off
23. runs too fast with the throttle closed the throttle stop screw should be turned counter clockwise to allow the throttle opening to be reduced Finally beyond the nominal break in period a slight readjustment toward a leaner needle setting may be required to maintain performance CARBURETOR CLEANLINESS The correct functioning of the carburetor depends on its small fuel orifices remaining clear See Care and Maintenance section on Page19 E BALL LINK AND SLIDE VALVE EXTENSION In case of the 10C caburetor It is seldom necessary to separate the slide valve extension from the slide valve itself For cleaning withdraw this complete sub assembly from the carburetor body after removing the slide valve guide screw Then wash with methanol or glow fuel Note take care not to lose the guide screw it is a special one When it is necessary to adjust the ball link position loosen the ball link retaining screw with a 2 5mm hexagon key re align the ball link and re tughten the screw firmly E REALIGNMENT OF MIXTURE CONTROL VALVE In the course of making carburetor adjustments it is just possible that the Mixture Control Valve may be inadvertently screwed 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 carburetor body The valve is then screwed in exactly 2 5 turn to re establish its neut
24. siderable heat Do not touch any part of your engine until it has cooled Contact with the muffler silencer cylinder head or exhaust header pipe in particular may result in a serious burn e This engine is intended for model cars Do not attempt to use it for any other purpose Mount the engine in your model securely following the manufacturers recommendations using appropriate screws and locknuts Fit an effective silencer muffler Frequent close exposure to a noisy exhaust especially in the case of the most powerful highspeed engines may eventually impair your hearing and such noise is also likely to cause annoyance to others over a wide area e The wearing of safety glasses is also strongly recommended e 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 e For their safety keep all onlookers especially small children well back at least 20 feet or 6 meters when preparing your model for running e 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 tube from the tank Do not attempt to disassemble the recoil starter of the 15CV X 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
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