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18

 IF THE ENGINE FAILS TO START

Check the following:

Glowplug battery discharged or glowplug defunct.

Fuel not reaching carburetor.

Engine flooded. Do not over-prime. (This could also 

cause a 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 cloth so that splashing fuel will 

not get into your eyes or mouth.

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˚. 

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 vehicle does 
not accelerate smoothly and rapidly, it is probable 
that the idle mixture is too rich.

FINAL ADJUSTMENT

15CV-RX

Having established the optimum Needle-Valve 
setting, check the Mixture Control Valve setting as 
follows.

19

In 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 idle mixture 
is too lean. Correct this by turning the Mixture 
Control Valve counter-clockwise 45~90˚.

Warning!

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. 

Carry out adjustments patiently, under actual 
running conditions, until the engine responds 
quickly and positively to the throttle control.

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.

With the optimum mixture control position, light 
smoke is visible during high speed running,and the 
engine rpm 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 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.

Summary of Contents for MAX-15CV-R Series

Page 1: ...supplied with the vehicle radio control equipment etc are accessible for checking at the same time 1 CONTENTS 18 SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O S ENGINE 15CV R SERIES INTRODUCTION BASIC...

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 WARNI...

Page 3: ...r 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 fr...

Page 4: ...nd 0 2mm thick It is suggested to adjust the total thickness according to atmospheric temperature humidity and glowplug used At early stage of running in when a glowplug tends to burn out early or whe...

Page 5: ...d downwards 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 m...

Page 6: ...g time It is not necessary to discard the lower element as frequently but be sure to change it when it becomes soiled 11 Position the air cleaner correctly so that it does not interfere with the cylin...

Page 7: ...P7 Medium Standard glowplug cannot be used with this engine 13 TOOLS ACCESSORIES etc The following items are necessary for operating the engine FUEL Use only top quality methanol based model engine f...

Page 8: ...speeds to obtain steady idling and smooth acceleration to mid speeds 15 CARBURETOR CONTROLS 10E R The Needle Valve The Mixture Control Screw The Throttle Stop Screw Three adjustable controls are prov...

Page 9: ...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 running the car on the t...

Page 10: ...setting check the Mixture Control Valve setting as follows 19 In 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 ou...

Page 11: ...g clear 21 4 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 e...

Page 12: ...41700 P7 standard plug T type plug 102 23 Tuned Silencer 3 73300305 7 73300712 10 73301012 Dust Cap Set For Carburetor Nipple For Tuned Silencer For 10C 10E R Carburetor T 1030 72103030 T 1031 7210303...

Page 13: ...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...

Page 14: ...nts off road 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...

Page 15: ...11 12 13 14 72403120 72403210 21257000 21514010 21252020 21230020 72403200 71608001 21213000 21501030 22631020 21481700 21286000 21255000 21817000 21806000 21503050 21504600 102 Cleaner Body 101 102...

Page 16: ...sembly Piston Pin Piston Pin Retainer 2pcs Connecting Rod Carburetor Complete Type 10C Carburetor Retainer Crankshaft Ball Bearing Front Crankcase Crankshaft Ball Bearing Rear Crankshaft Cover Gasket...

Page 17: ...20 21286100 21286200 21286400 21881320 23818420 1 10 1 1 1 2 2 3 3 1 4 5 6 7 8 9 C M3 5x8 1 1 1 1 2 2 3 3 1 4 5 6 7 8 9 10 33 The specifications are subject to alteration for improvement without notic...

Page 18: ...9 cc 0 152 cu in 15 2mm 0 598 in 13 7mm 0 539 in 4 000 36 000 r p m 1 2 ps 31 000 r p m 195g 6 88oz 35 15CV RX THREE VIEW DRAWING Dimensions mm SPECIFICATIONS Displacement Bore Stroke Practical R P M...

Page 19: ...000 r p m 193 2g 6 82oz 34 8 79 3 15 25 27 5 UNF1 4 28 11 31 4 39 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 35 ps 31 000 r p m 195g 6 88oz C Copyright...

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