O.S. engine MAX-12CV-R Guide de configuration
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
NOTES CONCERNING THE RECOIL STARTER
GLOWPLUG
TOOLS, ACCESSORIES, etc.
CARBURETTOR CONTROLS
PRESSURIZED FUEL SYSTEM
STARTING THE ENGINE &
RUNNING-IN('Breaking-in)
FINALADJUSTMENT
CARBURETTOR CLEANLINESS
CARE AND MAINTENANCE
O.S. GENUINE PARTS &
ACCESSORIES
ENGINES EXPLODED VIEW &
PARTS LIST
CARBURETTOR EXPLODED VIEW &
PARTS LIST
THREE VIEW DRAWING
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8
IF THE ENGINE FAILS TO START
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28
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32
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1
Remember that your engine is not a "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.
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
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.
2
WARNINGS
Model engine fuel is poi-
sonous. 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
whichmightigniteit.Donot
smokeorallowanyoneelse
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 head
or exhaust header pipe, in
particular, may result in a
serious burn.
••
•
•
3
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
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
(especially small children) well back
(at least 20 feet or 6 meters) when
preparing your model for running.
NOTES
•
•
•
•
•
•
4
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 from the tank.
•
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.
•
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 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.
•
5
INSTALLING THE GLOWPLUG
Carburettor
NOTE:
With this engine, the piston will feel tught 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.
Install washer on glowplug
and insert carefully 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/Cracing cars.There aretwoverions,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 shaft.
Crankshaft
Glow plug
Washer
Drive Hub Crankcase
Beam Mount Recoil Starter
Assembly No.5
Heatsink Heat
Starter Handle
6
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
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 retightening screw.
Rotate the retainer screw gently until it
stops, then tighten a further 60-90˚.
Do not overtighten the screw as this will
damage the carburettor body.
1.
2.
Rotate the retainer nut
gently until it stops. Tighten a further 60-90˚
7
NOTE:
Where spacers are supplied joined in pairs
(see sketch) separate them as shown.
Either face may be placed 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
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.
Mount Spacer
Engine Mount Spacer
Separate
Engine Mount
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 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 air intake.
AIR CLEANER TYPE 102
INSTALLATION OF AIR CLEANER
Carefully clean the carburettor,
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 carburettor 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.
•
8
Always remove contaminated elements carefully, to
ensure that dirt cannot enter the carburettor.
AIR CLEANER TYPE 102S
INSTALLATION OF AIR CLEANER
Carefully clean the carburettor,
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 carburettor 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.
•
It has a single filter element and is intended primarily
for circuit racing, where conditions are less damaging
thantheverydusty,loosesurfacesofoff-roadoperation
for which the double-element Type 101 and 102 Air
Cleaners are recommended.
The lower height of the Super Air-Cleaner 102S also
facilitates 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
withfilteroil.Asthis oilis
very sticky, take cere,
whenhandlingelements
to prevent dust or dirt
from adhering them. If
your fingers become
contaminated, wash them with soap and water.
During storage, the oil may have become unevenly
dispersedthrough theelements. Thiswillbeindicated
ifthebluecoloroftheelementmaterialappearspatchy.
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
It 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
so frequently, but be sure to change it when it
becomes soiled.
•
9
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1
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