Generac MAX-12CV-X User 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.

●

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.

CONTENTS

SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE

INTRODUCTION, BASIC ENGINE PARTS INSTALLATION AIR CLEANER TYPE102 NOTES CONCERNING

THE RECOIL STARTER GLOWPLUG TOOLS, ACCESSORIES, etc. CARBURETTOR CONTROLS

PRESSURIZED FUEL SYSTEM STARTING THE ENGINE &

RUNNING-IN('Breaking-in)

10 11 12

2~5

7 8

~ ~

16 17

18 19

26 27

IF THE ENGINE FAILS TO START FINAL ADJUSTMENT

~ ~

10 11

12 13

CARBURETTOR CLEANLINESS

CARE AND MAINTENANCE

EXPLODED VIEW & ENGINE PARTS LIST

CARBURETOR EXPLODED VIEW & PARTS LIST

O.S. GENUINE PARTS & ACCESSORIES

THREE VIEW DRAWING

SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE

Remember that your engine is not a "toy", but a highly efficient internalcombustion 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.

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

These cover events which might involve serious (in extreme circumstances, even fatal) injury.

NOTES

These cover the many other possibilities, generally less obvious sources of danger, but which, under certain circumstances, may also cause damage or injury.

WARNINGS

•

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. Do not smoke or allow anyone else to smoke, near to it.

•

Never operate your engine in an enclosed 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 head or exhaust header pipe, in particular, may result in a serious burn.

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.

NOTES

•

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

• (especially small children) well back (at least 20 feet or 6 meters) when preparing your model for running.

•

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"). Do not abruptly release the operating handle. Allow the cord to rewind smoothly while still holding the handle.

NOTES

•

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 glowplugignition 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 cylinderhead, making sure that it is not cross-threaded before tightening firmly.

Glow plug

Washer

BASIC ENGINE PARTS

Carburetor

Crankcase

Drive Hub

Crankshaft

Heatsink Head

Beam Mount

Starter Handle

Recoil Starter Assembly No.5

MAX-12CV-X

ENGINE INSTALLATION

Make sure that the vehicle'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.

Chassis

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.

Mount Spacer

Separate

Chamfer inside edges of bearers.

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.

Loosen the retainer screw, rotate the

1. 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.

Rotate the retainer screw gently until it

2. 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˚

ー8ー

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

Carefully clean the carburetor,

•

removing any old adhesive or sealant that may have been previously used on the outside of the air intake.

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.

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