O.S. engine MAX-65AX Instruction Manual
O.S. engine MAX-65AX Instruction Manual

O.S. engine MAX-65AX Instruction Manual

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It is of vital importance, before attempting to operate your
engine, to read the general 'SAFETY INSTRUCTIONS
AND WARNINGS' in the following section 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.
hly flammable.
It is of vital importance, before attempting to operate your
me, excessive
engine, to read the general 'SAFETY INSTRUCTIONS
SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE
anything else
AND WARNINGS' in the following section and to strictly
Remember that your engine is not a "toy", but a
smoke or allow
highly
efficient
adhere to the advice contained therein.
to it.
whose power is capable of harming you, or others,
if it is misused.
considerable
Also, please study the entire contents of this
As owner, you, alone, are responsible for the safe
part of your
operation of your engine, so act with discretion
instruction manual, so as to familiarize yourself with
and care at all times. If at some future date, your
. Contact with
O.S. engine is acquired by another person, we
the controls and other features of the engine.
inder head or
would respectfully request that these instructions
particular, may
are also passed on to its new owner.
SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE
The advice which follows is grouped under two
headings according to the degree of damage or
disintegrate or
danger which might arise through misuse or neglect.
ip speeds with
Remember that your engine is not a "toy", but a
eet(180 metres)
WARNINGS
highly
d that such a
These cover events which might involve serious
whose power is capable of harming you, or others,
, (see 'NOTES'
(in extreme circumstances, even fatal) injury.
if it is misused.
NOTES
As owner, you, alone, are responsible for the safe
closed space.
These
cover
generally less obvious sources of danger, but
gines, exhaust
operation of your engine, so act with discretion
which, under certain circumstances, may also
engine only in
and care at all times. If at some future date, your
cause damage or injury.
O.S. engine is acquired by another person, we
WARNINGS
would respectfully request that these instructions
Never touch, or allow any object to come
aircraft. Do not
are also passed on to its new owner.
into contact with, the rotating propeller
e.
and do not crouch over the engine when
it is running.
The advice which follows is grouped under two
urely, following
Model engine fuel is poisonous. Do not
ations,
using
headings according to the degree of damage or
allow it to come into contact with the eyes
or mouth. Always store it in a clearly marked
danger which might arise through misuse or neglect.
upplied with the
container and out of the reach of children.
en exhaust may
WARNINGS
h noise is also
ABOUT THE ENGINE
er a wide area.
This is a high performance two stroke engine
These cover events which might involve serious
he engine and
designed for sport and aerobatic models.
(in extreme circumstances, even fatal) injury.
battery leads to
Crankcase and cylinder head are of aero-shape
design which has the advantage of light weight and
fingers.Use an
compact size.
NOTES
oth.
The new 61D carburetor needlevalve assembly has
meter and pitch
now been angled backward for safety.
These
aft. Locate the
The new E-4010A silencer is supplied as standard.
generally less obvious sources of danger, but
ved face of the
STANDARD ACCESSORIES
n of flight. Firmly
Glow Plug No.8
which, under certain circumstances, may also
ect size wrench.
cause damage or injury.
Needle Valve
opeller nut and
Extension Cable Set
rting the engine.
crews and nuts
WARNINGS
BASIC ENGINE PARTS
Cylinder head
igid as possible
ance and safe
Carburetor
mount using at
Type 61D
earers.
g beams are
Propeller nut
grated with the
ucture to absorb
steel screws,
cket head cap
Crankshaft
for bolting the
2-stroke engine for airplane
If you install a spinner, make sure that it is a precision
made product and that the slots for the propeller blades
do not cut into the blade roots and weaken them.
Preferably, use an electric starter. The wearing of
internal-combustion
safety glasses is also strongly recommended.
Discard any propeller which has become split, cracked,
nicked or otherwise rendered unsafe. Never attempt to
repair such a propeller: destroy it.
Do not modify a propeller in any way, unless you are
highly experienced in tuning propellers for specialized
competition work such as pylon-racing.
Take care that the glow plug clip or battery leads do
not come into contact with the propeller. Also check
the linkage to the throttle arm. A disconnected
efficient
linkage could also foul the propeller.
After starting the engine, carry out any needle-valve
readjustments from a safe position behind the
rotating propeller. Stop the engine before attempting
the
many
other
to make other adjustments to the carburetor.
Adjust the throttle linkage so that the engine stops
when the throttle stick and trim lever on the
transmitter are fully retarded. Alternatively, the
engine may be stopped by cutting off the fuel supply.
Never try to stop the engine physically.
Take care that loose clothing (ties, shirt sleeves,
scarves, etc.)do not come into contact with the
propeller. Do not carry loose objects (such as
pencils, screwdrivers, etc.) in a shirt pocket from
where they could fall through the propeller arc.
Do not start your engine in an area containing loose
gravel or sand. The propeller may throw such
material in your face and eyes and cause injury.
For their safety, keep all onlookers (especially small
children) well back (at least 20 feet or 6 meters) when
preparing your model for flight. If you have to carry the
model to the take-off point with the engine running, be
especially cautious. Keep the propeller pointed away
cover
the
from you and walk well clear of spectators.
Warning! Immediately after a glowplug-ignition
E-4010A Silencer Assembly
engine has been run and is still warm, conditions
Silencer Retaining Screw
sometimes exist whereby it is just possible for the
engine to abruptly restart if the propeller is casually
flipped over compression WITHOUT the glowplug
battery being reconnected. Remember this if you
wish to avoid the risk of a painfully rapped knuckle!
Never touch, or allow any object to come
The exhaust outlet of the silencer can be rotated to
any desired position in the following manner:
into contact with, the rotating propeller
1 )
Loosen the locknut and assembly screw.
and do not crouch over the engine when
2 )
Set the exhaust outlet at the required position by rotating
it is running.
the rear part of the silencer.
Model engine fuel is poisonous. Do not
3 )
Re-tighten the assembly screw, followed by the locknut.
allow it to come into contact with the eyes
PROPELLERS
or mouth. Always store it in a clearly marked
The choice of propeller depends on the design and
container and out of the reach of children.
weight of the aircraft and the type of flying in which you
Crankcase
Drive Hub
will be engaged. Determine the best size and type
Propeller washer
after practical experimentation. As a starting point,
MAX-
2-stroke engine for airplane
machine
internal-combustion
possibilities,
many
(M4x40 2pcs.)
Glowplug
Cover Plate
Beam Mount
65AX
Model engine fuel is also high
Keep it away from open flam
heat, sources of sparks, or
which might ignite it. Do not s
anyone else to smoke, near
Model engines generate
heat. Do not touch any
engine until it has cooled.
the muffler (silencer), cyli
exhaust header pipe, in p
result in a serious burn.
A weakened or loose propeller may d
be thrown off and, since propeller ti
powerful engines may exceed 600 fe
per second, it will be understood
failure could result in serious injury,
section relating to propeller safety).
Never operate your engine in an enc
Model engines, like automobile eng
deadly carbon-monoxide. Run your e
an open area.
NOTES
This engine was designed for model
attempt to use it for any other purpose
Mount the engine in your model secu
the
manufacturers'
appropriate screws and locknuts.
Be sure to use the silencer (muffler) su
engine. Frequent exposure to an ope
eventually impair your hearing. Such
likely to cause annoyance to others ove
If you remove the glowplug from th
check its condition by connecting the b
it, do not hold the plug with bare
appropriate tool or a folded piece of clo
Install a top-quality propeller of the diam
specified for the engine and aircra
propeller on the shaft so that the curv
blades faces forward-i.e. in the direction
tighten the propeller nut, using the corre
Always check the tightness of the pro
retighten it, if necessary, before restar
Also, check the tightness of all the sc
before restarting the engine.
INSTALLATION
It is suggested to use as heavy and ri
engine mounting for highest performa
running. Install the engine on a plastic
least 3mm steel screws, such as A
locknuts, for bolting the engine to the be
Make sure that these mounting
accurately aligned and firmly integ
other
possibilities,
airframe, reinforcing the adjacent stru
vibration. Use 4mm or larger
preferably Allen type hexagon soc
screws, with washers and locknuts,
engine to the bearers.
O.S. Radial Motor Mount
A
special
O.S.
No.71905200) is available, as an opt
use where firewall type mounting is re
THROTTLE LINKAGE
Before connecting the throttle to its se
that the throttle arm and linkage sa
adjacent part of the airframe structur
throttle is opened and closed. Connect
that the throttle is fully closed when
throttle stick and its trim lever are a
settings and fully open when the thrott
fully-open position. Carefully align the ap
in the throttle arm and servo horn so
symmetrically and smoothly through thei
INSTALLING SILENCER
Secure the silencer to the engine by
retaining screws supplied after the eng
mounted to a test bench or a model.
W/E-4010A
M
machine
recommenda
radial
motor

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Summary of Contents for O.S. engine MAX-65AX

  • Page 1 'SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS AND WARNINGS ABOUT YOUR O.S. ENGINE the muffler (silencer), cyli do not cut into the blade roots and weaken them.
  • Page 2 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. Model engines generate considerable heat.
  • Page 3 If you install a spinner, make sure that it is a precision made product and that the slots for the propeller blades do not cut into the blade roots and weaken them. Preferably, use an electric starter. The wearing of safety glasses is also strongly recommended.
  • Page 4: About The Engine

    ABOUT THE ENGINE This is a high performance two stroke engine designed for sport and aerobatic models. Crankcase and cylinder head are of aero-shape design which has the advantage of light weight and compact size. The new 61D carburetor needlevalve assembly has now been angled backward for safety.
  • Page 5: Installation

    INSTALLATION It is suggested to use as heavy and rigid as possible engine mounting for highest performance and safe running. Install the engine on a plastic mount using at least 3mm steel screws, such as Allen type, with locknuts, for bolting the engine to the bearers. Make sure that these mounting beams are accurately aligned and firmly integrated with the airframe, reinforcing the adjacent structure to absorb...
  • Page 6 The exhaust outlet of the silencer can be rotated to any desired position in the following manner: Loosen the locknut and assembly screw. Set the exhaust outlet at the required position by rotating the rear part of the silencer. Re-tighten the assembly screw, followed by the locknut. PROPELLERS The choice of propeller depends on the design and weight of the aircraft and the type of flying in which you...
  • Page 7: Before Starting

    FUEL The 65AX should be operated on a methanol based fuel containing not less than 18% (volumetric) castor oil, or a top quality synthetic lubricant (or a mixture of both), plus a small percentage (5-20%) of nitromethane for improved flexibility and power. (The carburetor is adjusted a little on the rich side at the factory for a fuel containing 20% lubricant and 15% nitromethane.) Some commercial fuels also contain coloring additives...
  • Page 8 Fuel Filter It is recommended to install a good in-line filter between the fuel tank and carburetor to prevent entry of foreign matter into the carburetor. (optional extra) O.S. SPEED Silicone Fuel Line The connection between the fuel tank and the engine. ID.
  • Page 9: Running-In ("Breaking-In")

    VERY IMPORTANT! Before being operated at full power (i.e. at full-throttle and with the needle-valve closed to its optimum setting) the engine must be adequately run-in, otherwise there is a danger of it becoming overheated and damaged. How to stop the engine Pull down the throttle lever and trim lever on the transmitter fully.
  • Page 10: Mixture Control Valve Adjustment

    Intermittent, high-pitched two-stroke note Optimum needle setting (2) Optimum needle setting (1) superimposed As the needle-valve is closed slowly and gradually, the Slowly advance the throttle to its fully open position, engine r.p.m. will increase and a continuous then gradually close the needle-valve until the exhaust on low "four-stroke"...
  • Page 11: Care And Maintenance

    CARE AND MAINTENANCE Please pay attention to the matters described below to ensure that your engine serves you well in regard to performance, reliability and long life. As previously mentioned, it is vitally important to avoid operating the engine in conditions where dust, disturbed by the propeller, may be deposited on the engine and enter its working parts.
  • Page 12 When the engine is not to be used for some months (for example, as between flying seasons), a worthwhile precaution is to remove it from the airframe and, after washing off the exterior with alcohol (not gasoline nor kerosene), remove carefully the carburetor, glow plug and all silicone tubing and put them safely aside.
  • Page 13 ENGINEN PARTS LIST Code No. Description 26904000 Cylinder Head 26904160 Head Gasket 26903000 Cylinder & Piston Assembly 26606008 Piston Pin 27917000 Piston Pin Retainer (2pcs.) 29115000 Connecting Rod 26981000 Carburetor Complete (Type 61D) 45010002 Propeller Nut 28009002 Propeller Washer 26908000 Drive Hub 29320000 Thrust Washer...
  • Page 14 ENGINE EXPLODED VIEW Type of screw C...Cap Screw C.M3x16 C.M3x8 ENGINEN PARTS LIST ENGINE EXPLODED VIEW Description Code No. Type of screw C...Cap Screw 26904000 Cylinder Head C.M3x16 26904160 Head Gasket 26903000 Cylinder & Piston Assembly 26606008 Piston Pin 27917000 Piston Pin Retainer (2pcs.) 29115000 Connecting Rod...

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W/e-4010a

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