O.S. engine GT15HZ600 Setup guide

1)
2)
3)
4)
ABOUT THE ENGINE
STANDARD ACCESSORIES
Spark Plug CM-6
Ignition Module
Assembly (IG-05)
PowerBoost Pipe GT15HZ
(Included only in code #38173 GT15HZ600
W/PowerBoost Pipe)
Two stroke gasoline engine for helicopter
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.
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
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.
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 or abused. 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.
Never touch, or allow any object to come
into contact with, the rotating parts.
Gasoline is poisonous. Do not allow it to
come into contact with the eyes or mouth.
Always store it in a clearly marked
container in a cool and dark place and out
of the reach of children. There is a
possibility that it may damage your health.
Model engines generates 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 results in a serious burn.
Observe the laws and regulations in each
country and district concerning the usage,
transportation and storage of gasoline. Ask for
details at the fire station in each district.
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.
Do not operate the engine or model alone, or
there is a possibility of injury.
Carry out the mixing of the gasoline and
oil outdoors or in a well ventilated place
away from any source of fire to prevent the
possibility of a fire.
Refill the fuel tank only after the engine is
well cooled down, or there is a danger of fire.
When checking a spark plug with the power source
on, do not hold the plug, plug cap, high tension cord ,
or you will get a shock.
If you have to carry the model to the take-off point
with the engine running, be especially cautious.
Hold the rotor securely and keep well clear of
spectators.
Switch off the ignition module to stop the engine or
fully close the throttle valve via the transmitter to
shut off the fuel supply. Otherwise there is a
possibility of injury.
Immediately after the engine is stopped, the engine
may start with a crank even when the ignition switch
is off. Do not crank the engine, or there is a
possibility of injury.
Be sure to install an externally operable switch for
the ignition system battery to stop the engine if it is
started unintentionally with the radio transmitter
turned off or there is the possibility of injury.
Connect the throttle linkage so that the engine can
be stopped via radio operation.
This engine was designed for model helicopters.
Do not attempt to use it for any other purpose.
Start the engine only after installing it in the model.
Do not start the engine before installing it in the
model, or there is a possibility of injury.
Be sure to use an effective silencer (muffler).
Frequent exposure to an open exhaust may
eventually impair your hearing. Such noise is also
likely to cause annoyance to others over a wide area.
Mount the engine in your model securely, following
the manufacturers’ recommendations.
For their safety, keep all onlookers (especially small
children) well back (at least 10 meters) when
preparing your model for flight.
NOTES
Take care that loose clothing (ties, shirt sleeves, scarves
etc.) do not come into contact with the rotor. Do not carry
loose objects (such as pencils, screwdrivers, etc.) in a
shirt pocket from where they could fall through the rotor
disc.
Always check the throttle linkage.If it is disconnected,
throttle action becomes uncontrollable, which may
result in a serious accident.
Use an electric starter for this engine. The wearing of
safety glasses is also strongly recommended.
Press the rotor head down securely.
Be sure to carry out adjustments of the high speed
needle and slow speed needle after stopping the
engine.
Gasoline is highly flammable. Keep it away
from an open flame, excessive heat,
sources of sparks, or anything else which
might cause it to ignite. Do not smoke or
allow anyone else to smoke near to it.
WARNINGS
Throttle Lever
This engine is designed to be expressly run by gasoline fuel.
Carburetor is set at the factory when the engine leaves the factory.
First run the engine with this factory settings. Refer to the INITIAL OPENING
OF THE NEEDLES described later concerning the factory settings.
Use the Powerboost Pipe GT15HZ (code no. 72148000) with GT15HZ600.
Using a silencer developed for glow engines may cause overheating.
Any damages caused by a use of such silencer are not covered under
warranty.
Be aware of long flight time due to low fuel consumption.
3 Be sure to use a power source of more than 1500mAh capacity for the
receiver when more than 15 minutes of flight is expected. Also, it is suggested
to check the remaining level frequently and charge the batteries if necessary.
Do not run the engine at high rpm abruptly after
starting the engine, or you will be injured by rotating
rotor.
Be sure to use an electric starter and wear safety
goggles and gloves when starting the engine, or you
will be injured.
Since a gasoline engine uses a spark ignition system it is possible that radio
frequency noise from the ignition module can interfere with the receivers
operation if a 72MHz or 40MHz radio is used. Therefore it is recommended that
a 2.4GHz radio system be used, which is not effected by radio frequency noise.
It is recommended to use 2.4GHz transmitter/receiver.
600929900000
Use regular gasoline. (No need to use high octane gasoline.)
Mix commercially available 2 stroke engine oil with a 25:1 ratio. Pre-mixed
gasoline is also usable but do not use such as pre-mixed gasoline which
requires the needle settings far away from the factory settings, otherwise
needle settings would be very difficult.
GT15HZ600
ID.２mm×OD.4mm×150mm Length
Pump Unit PD-08 1pc.
Fluororubber Tube 1pc.
Nylon Nut M3 2pcs.
Pan Head Screw (N.+M3x18) 2pcs.
This is a 2-stroke 15cc gasoline engine GT15HZ600
expressly designed for 600 size (50 glow engine class)
R/C helicopters. Its mount size is the same as GT15HZ,
which is for 700 size (90 glow engine class) helicopters,
but the crankshaft diameter of the threaded part is the
same as standard 50 class glow engine. Therefore you
can fit a fan pulley and a clutch of 600 size helicopter
directly to the crankshaft without modifications.The new
61HA carburetor achieves linear power transition with a
combination of pump unit PD-08. #72520000
conversion kit enables a direct fit to ALIGN T-REX 600N
helicopter. The conversion kit consists of Main frames,
a bottom frame, a pinion gear, a set of engine mount,
ball bearings, and collars.
5) Use the exclusive silencer
The cooling fan cover for T-REX 700 DFC (ALIGN
code no. H7NB011XXW) and the optional metal
engine fan (ALIGN code no. HN6060) for T-REX
600N are necessary to fit GT15HZ600 to ALIGN
T-REX 600N helicopter.

ENGINE PARTS NAME
Battery Leads
Sensor Leads
High Tension Cord
Spark Plug
Carburetor
Complete 61HA
Sensor
Leads
RPM
Sensor
Drive Hub
Crankshaft
Heatsink Head
Propeller Nut
Ignition module (IG-05)
Cover
Plate
INSTALLATION OF THE ENGINE
CARBURETOR PARTS NAME
LINKAGE TO THE CARBURETOR
Fig.1
IGNITION MODULE
Major specifications
Consumption current is 750mA/14,000rpm/6.0V.
User a power source of more than 1500mAh
capacity.
The voltage of power source is 4.8~8.4V (rated).
(Ni-Cd, Ni-MH 4~6 cells, Li-Po, Li-Fe 2 cells)
Installation
Install the ignition module taking sufficient
anti-vibration measures.
Connect the sensor leads of the igniter module
(while, red, black three parallel wires) to the sensor
leads from the engine.
Connect the battery leads of the igniter module (red,
black two parallel wires) to the power source.
Install the module to the place where good ventilation is
secured because it becomes hot when the engine runs.
Hold the high tension cord to the frame to prevent
from breaking due to vibration.
Install the cooling fan and clutch on the engine, then
install the engine in the model referring to the
instruction manual supplied with the model.
At this time some small modifications are required
so that the carburetor parts may not interfere with
the cooling duct.
Select either F lever or J lever of
the Throttle Valve Lever supplied
according to the servo used.
Select a hole so that both servo
horn and Throttle Valve Lever make
right angle against the linkage rod.
Cut off the levers not in use with
nippers.
Cut off the levers
not in use.
This is a component for igniting a spark plug. Install
the plug cap on the plug by using force to push it to
the root. Then, install the module in the model.
Do not grip the engine mounting beams with a vise, or
the crankcase will be distorted which will result in
engine breaking. Do not use a tool which locks piston
when installing a cooling-fan and clutch, or top of the
piston may be damaged. Also, do not insert a screw
driver or the similar into the exhaust port.
NOTES ON INSTALLING COOLING FAN AND CLUTCH
Crankcase
Heatsink
Locking piston by inserting a tool from the
plug hole or exhaust port while installing
the cooling fan and clutch may damage
the engine.
When removing and installing the cover plate, be
sure to do it with the piston at TDC. Otherwise it
is possible the piston skirt will interfere with the
cover plate and become damaged.
71530510 and 71530520 cannot be used with the
GT15HZ600. If they are used, piston skirt will become
broken or damaged.
We strongly recommend to use Crankshaft Clamp
91/105/GT15 (Code No.71530530) available as an
optional tool.
The O.S. Crankshaft Clamp is a must-have for
installing the cooling fan!!
Regulator
Needle Valve
Mixture Control Valve
Throttle Lever
Fuel Inlet
NEVER disassemble the fuel pump or pressure
regulator. Their original performance may not be
restored after reassembly.
DO NOT allow foreign matter to enter the fuel
system. Dirt inside the pump or regulator, no matter
how small, may obstruct the flow of fuel and prevent
these components from working properly.
CARE OF FUEL PUMP & REGULATOR
DO NOT obstruct the small rectangular hole at the
bottom of the regulator, or the regulator will not
function correctly.
NEVER insert anything into the inlet or outlet nipples
in an attempt to clear a suspected obstruction.
ALWAYS use fuel filters. Keep the fuel tank
scrupulously clean and filter all fuel as it enters the
tank (e.g.via an O.S.'Super-Filter' Code No.72403050)
and use a good quality in-line filter between the tank
and pump. Remember to inspect filter screens at
regular intervals and rinse clean as necessary.
Rectangular
hole
NEVER use kerosene, thinner or any organic solvent
for cleansing the pump. Rubber parts will be ruined
by these materials. Use only alcohol (methanol) or
gasoline.
The Needle-Valve
For adjusting the mixture strength when the throttle is
fully open Needle-valve adjustment effect the mixture
strength at round mid speed.
The Mixture Control Valve
For adjusting the mixture strength at part-throttle and
idle speed, to obtain steady idling and smooth
acceleration to mid speed.
Two adjustable controls are provided on this
carburetor.
Therefore, it is required to adjust also the needle-valve
when the mixture control valve is adjusted. Mixture
control valve is pre-set at nearly best position when the
engine leaves the factory. Therefore, it is not necessary
to adjust the mixture control valve until running-in is
completed.
INITIAL OPENING OF THE NEEDLES
This carburetor is equipped with the following two needles.
The Needle-Valve
The default setting is made at the factory. This is to
adjust the fuel mixture from idling to hovering.
The Mixture Control Valve
Open it 2.5-3.0 turns from the fully closed position. This
is to adjust from hovering to the flight up in the air.
The initial opening is just a basic position and not
necessarily the optimum position.
Carry out adjustments according to the procedures
described in the NEEDLE ADJUSTMENTS section.
GT15HZ600 How to correctly fit the plug cap to the
spark plug
The GT15HZ600 gasoline engine is equipped with a
spark plug, and safe flight of the helicopter requires a
firm connection of the plug cap to the spark plug. See
the following instructions for details.
Cylinder head with spark plug
(Pic. 1)
Make sure that the spark plug is
tight in the head. Apply silicon
grease to the plug top or inside
of the plug cap for easy
connection. (Pic. 2)
(The shown cylinder head is a
cutaway.)
(Pic. 1)
(Pic. 2)
F
J
F
J
Fig.2
Plug Cap
Mount the PD-08 Pump Unit on the distant location
from the engine, where it can get good ventilation but
within the reach of the accessory tube. Mounting the
Pump Unit close to the engine cover plate may cause
malfunction of the Pump Unit due to high temperature.
Connect the nipple in the back of the Pump Unit to the
engine cover plate nipple with the Fluoro-rubber Tube
(included). The tube length should be around 10 cm.
Put a piece of tube around the end of the fuel tube as
shown in Fig 1 to prevent the tube from coming off.
MOUNTING THE PUMP UNIT
Fuel Tube (included)
Put a piece of tube around the Fuel Tube
to prevent the fuel tube from coming off.
Carry out the linkage making sure of the moving
direction of the throttle valve. The moving angle of the
throttle valve from fully closed position to fully opened
position is 85 degrees. Connect the throttle linkage so
that the engine can be completely stopped via radio
operation. The throttle opening when starting should
be approx. 30 % of the total movement. After starting
the engine, you can set the idling position lower as the
engine is warming up. We recommend you to set a
specified starting mode in a vacant idle-up channel for
example idle-up 3, so that you can use the mode until
the engine warms up.
F
J J
F
28
34
27
33
Notice on 61HA carburetor clogging
Gasoline engine carburetors generally have
narrower fuel passages for better fuel mileage than
glow engines. As a result, the passages clog easily if
a fuel filter is not used. You should insert a
gasoline-resistant fuel filter — finer than #200
mesh — between the fuel tank and the engine (if a
T-shaped tank nipple is used, place the filter between
the nipple and the engine).
When filling your fuel tank from a gasoline container,
always use the O.S. Super Filter L (part #72403050)
to prevent dust from entering the tank. A clogged
carburetor can cause inconsistent running, stalling,
and overheating. If your carburetor becomes
clogged, it must be disassembled and cleaned.
When taking apart the carburetor, remember the
assembling order. Be careful not to lose small
internal parts. If you’ re not confident performing
this type of maintenance, take the engine to the
hobby shop where you purchased it or send it to the
service center of your country’ s O.S. distributor.

(72148000)
1.
2.
3.
4.
5.
6.
7.
NEEDLE ADJUSTMENTS
O.S. GENUINE PARTS & ACCESSORIES
(72403050)
(71531010)
(L)
NON-BUBBLE WEIGHT
(S)
(72403051)
SUPER FILTER
(S)
STARTING
MAINTENANCE AFTER THE DAY’S FLIGHTS
Fill the tank with mixed gasoline.
Turn the transmitter switch ON and check the
movement of each servo.
Turn off the ignition switch, and open the throttle
fully.
Apply an electric starter for several seconds. Note
that the correct rotating direction of the starter is
counter-clockwise facing the engine.
Make sure the fuel has reached the carburetor.
Make sure the throttle opening is set at the idling
position approx. 30 % of the fully opened position.
Turn on the ignition switch, then apply the starter.
Start the engine with the following procedure.
If the idling is stable, advance the throttle stick
gradually to take off. If the take-off is done normally,
there is no problem. If there is a problem, carry out
adjustments according to the symptoms.
Carry out the needle settings as follows.
1.
Generally a gasoline engine is more sensitive to a lean
mixture in comparison to a glow engine and will
over-heat and stop without warning. The engine should
always be run with a slightly rich mixture setting.
After confirming stable hovering, start the running-in
consuming 2~3 litters of fuel. Carry out the
running-in taking time and checking the remaining
level of the receiver battery due to much lower fuel
consumption with a gasoline engine. Running
temperature of a gasoline engine even with a
normal running comes to around 130℃. Never
touch the engine nor silencer, or you will get a
serious burn.
Fill the carburetor with fuel at the conclusion of a
day’s flying. (Pay careful attention to fire and ignition
source when carrying and storing the model.)
If the engine is stored without filling the carburetor
with fuel, inside parts will dry out and not work
properly at the next running. If the engine quits out
of fuel, refill the carburetor with fuel.
With a gasoline engine rust hardly occurs. Check
the exterior to make sure there is nothing wrong and
wipe off any oil residue.
Use gasoline to clean the outside of the carburetor.
Do not use kerosene ,or the inside parts will be
damaged. Clean the outside only because the
inside parts are sensitive to foreign matter.
After cleaning the engine, dry it well then inject a
small quantity of oil used to mix fuel and rotate the
crankshaft several times to distribute the oil well
inside the engine.
Store the batteries for the ignition and the receiver
removing from the model. In case of Li-Po
batteries, utmost care should be taken not to get
fired accidentally.
(71530530)
CRANKSHAFT CLAMP 91/105/GT15
Halfway Connection 2 (Pic. 6)
The plug cap is not fitting on the
spark plug hexagon base
completely.
How to remove the plug cap
(Pic. 7)
Hold the plug cap body tight by
wrapping with waste cloth and
pull it straight. Do not pull the
cable alone or it may cause the
wire to break internally.
(Pic. 6)
(Pic. 7)
Fig.3
FUEL
FUEL TANK & LINES
Be sure to equip
air vent pipe.
Be sure to use fuel line keepers to
prevent tubing from coming off.
To carburetor
fuel inlet
Be sure to replace tubing
inside periodically.
Gasoline is highly flammable. Carry out the mixing
of the gasoline and oil outdoors or in a well
ventilated place away from any source of fire to
prevent the possibility of a fire.
With a gasoline engine, passages in the carburetor
are narrower than that of a glow engine, and therefore
very sensitive against foreign matter such as dust. It is
suggested to use optional accessory Super Filter L
(Code No. 72403050)when filling a tank in the model
from a container used for transportation or storing.
Use a tank designed for gasoline. (Tanks designed
for glow fuel use a rubber cap which is deteriorated
by gasoline.)
For tubing inside the tank use fluoro-rubber or nitrile
rubber of 2.0mm ID. Replace tubing inside the fuel
tank every six month. Since the model attitude
changes vigorously, flexible tube and heavy enough
weight are required. It is suggested to use optional
accessory Non-Bubble Weight (Code No. 71531010)
for it.
This engine does not require a muffler pressurized
fuel system but be sure to provide an air vent.
Be sure to use the tube
resistant to gasoline.
Use regular gasoline. No need to use high octane
gasoline. Mix commercially available 2 stroke engine
oil with a 25:1 ratio.
We have checked and recommend the following oils.
Zenoah Genuine FC Class
KLOTZ ModeLube®
AMSOIL Saber
With these oils, you can set the needles without
changing the factory settings too much.
2.
3.
4.
5.
6.
(28382100)
ID. 2mm × OD. 4mm Length 500mm
(28382200)
ID. 3mm × OD. 5mm Length 500mm
POWER BOOST PIPE GT15HZ
FLUORORUBBER TUBE
SPARK PLUG CM-6(NGK) (71669000)
Use a fuel tank designed for gasoline engines.
Tanks designed for glow fuel use a rubber cap, which is
easily deteriorated by gasoline. For tubing inside the tank,
we recommend 2.0 mm I.D. fluoro-rubber tube (code
no.28382100). Replace tubing inside the fuel tank every
six months. Since the model attitude changes vigorously,
flexible tube and heavy enough weight are required. It is
suggested to use optional accessory Non-Bubble Weight
(code no.71531010) for it. This engine does not require a
muffler pressurized fuel system but be sure to provide an
air vent as shown in Fig.3.
PIPINGS
Connect the fuel lines with fuel tubes. From the fuel tank
outlet to the Pump Unit inlet, and also from the Pump
Unit outlet to the carburetor inlet, We recommend to use
TYGON tube, in which the fuel is visible.
Radio‘noise’ generated by partial connection may cause
errors in receivers, gyros, governors and servos.
Again, the plug cap may detach during flight.
After starting the engine, make sure the clutch is
disengaged and the main rotor is not rotating since
the throttle opening at idling position is around 30 %.
When the idling becomes stable, bring the model to
a safety place for warming up and continue
warming up for 2 minutes. During the warming up,
the rotor will rotate slowly but it will be no problem.
After the warming up, switch the start position mode
to the normal hovering mode, then adjust the
opening of throttle precisely.
A) If the engine responds sluggishly to increase
rpm, turn the slow needle 5 degrees clockwise and
try a takeoff again. Repeat the same procedure until
you find the fine adjustment.
B) If the engine runs at very high rpm, or hesitates
before picking up speed and stops, turn the mixture
control valve 10 degrees counter-clockwise.
Repeat the same procedure until you find a fine
adjustment.
After breaking-in, switch the flight mode and start the
flight in the air. If the engine quits or over-revs at full
throttle with small pitch angle, you need to set the
needle richer. Turn the needle valve 45 degrees
counter-clockwise. Re-adjust the idle-up throttle
curve flat and lower. In the rich needle setting, the
engine responds sluggishly to increase rpm. Turn the
main needle 2-3 clicks clockwise and see the
change.
Correct connection (Pic. 3)
The ‘tight fit’ plug cap is
designed not to detach from the
spark plug easily. Press the plug
cap firmly until it covers the
hexagon plug base with a ‘click’.
The fully connected plug cap in
the cylinder head doesn’t show
the stamped “O.S.” logo on its
side. (Pic. 4)
(Pic. 3)
(Pic. 4)
Halfway Connection 1 (Pic. 5)
A spark between the plug cap
and the plug generates radio
‘noise’, which may cause errors in
receivers, gyros, governors and
servos. The plug cap could also
detach during flight. (The shown
cylinder head is a cutaway.)
(Pic. 5)

ENGINE EXPLODED VIEW & PARTS LIST
Dimensions (mm)
THREE VIEW DRAWING
The specifications are subject to alteration for improvement without notice. Copyright 2014 by O.S. Engine Mfg. Co., Ltd. All rights reserved. Printed in CHINA.
C121403
http://www.os-engines.co.jp
6-15 3-Chome Imagawa Higashisumiyoshi-ku
Osaka 546-0003, Japan
TEL. [phone]
FAX. [phone]
SCREW SETS (10pcs.)
Heatsink Head
Head Gasket (0.2mm)
Cylinder Liner
Piston Ring
Piston
Piston Pin
Piston Pin Retainer
Connecting Rod
Carburetor Complete (61HA)
Thermo Insulator
Carburetor Gasket (2pcs.)
Propeller Nut
Drive Hub
Thrust Washer
Ball Bearing (F)
Rotation Sensor
Rotation Sensor Retaining Screw Set (2pcs.)
Crankcase
Crankcase Plug
Ball Bearing (R)
Crankshaft
Drive Pin
Crank Pin Stop Screw
Cover Gasket
Cover Plate
Nipple No.1
Crankcase Heatsink
Ignition Module (IG-05)
Spark Plug CM-6 (Rcexl)
Pump Unit (PD-08)
Pump Unit Retaining Screw
Powerboost Pipe GT15HZ
Silencer Retaining Screw (L) C.M4x45 (2pcs.)
Exhaust Tube
Exhaust Gasket Set (2pcs.)
(Ignition module)
14.95 cc / 0.912 cu.in.
27.7 mm / 1.091 in.
24.8 mm / 0.976 in.
2.5 ps / 2.47 hp / 14,000 r.p.m.
2,000-16,000 r.p.m.
685 g / 24.17 oz.
92.0 g / 3.25 oz.
197.5 g / 6.97 oz.
(PowerBoost Pipe GT15HZ)
60
36.9
85.2
42
42.8
59.8
12.512.5
37.3
88
1/4-28UNF-2A
25.4
7.5
9.52
R2.1
52
3
R2.1
4.2
57
49.4
77.6
10
R0.5
42.6
61
3
C…CapScrewBC…HexagonButtonCapScrew
T…TappingScrew
TypeofScrew
Throttle Lever Assembly
Throttle Lever Retaining Screw (10pcs./set)
Carburetor Rotor
Mixture Control Valve Assembly
"O" Ring (L) (2pcs.)
"O" Ring (S) (2pcs.)
Carburetor Body
Roter Guide Screw
Universal Nipple L3.5
Needle Valve Assembly
Needle Assembly
"O" Ring (2pcs.)
Needle-valve Holder Assembly
Ratchet Spring No.4
No. Code No. Description
C…CapScrew
TypeofScrew
CARBURETOR EXPLODED VIEW & PARTS LIST
1
1-1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
15-1
16
17
18
19
20
21
22
23
23-1
24
28154000
29061406
28153100
28153400
28153201
26606008
28117020
28155000
28181020
28169470
49415000
23210007
28158000
46120000
26731010
74002320
74002321
28171000
28151300
29030001
28172000
44408100
28152100
27414020
28177000
22681953
29077100
74002610
71669010
72508100
29067120
72148000
29122520
72145010
72145020
1
1-1
2
3
3-1
3-2
4
5
6
7
7-1
7-2
7-3
7-4
29085140
79871110
28181220
28181600
28181920
28181910
28181110
45581820
45571110
28181900
28181970
28181910
27381940
26711305
5
1
2
3
4
6
C.M3x20
1-1
7
8
9
10
11 12
13 14
15-1
15
16
17
18
19
21 22 23
C.M3x12
T.+M3x12
BC.M5x10
C.M3x6
20
23-1
24
4
5
7
6
7-1
7-3
7-2
7-4
12
3
3-1
3-2
C.M3x8
1-1
Cover Plate Retaining Screw (4pcs.)
Heatsink Head Retaining Screw (6pcs.)
Thermo Insulator Retaining Screw (2pcs.)
Caburetor Retaining Screw (2pcs.)
79871140
79871200
79860110
79860310
C.M3x12
C.M3x20
T.M3x12
BC.M5x10
Code No. Size Pcs. used in an engine
No. Code No. Description
Displacement
Bore
Stroke
Output
Practical R.P.M.
Weight (Engine)
SPECIFICATIONS