No. 41424
No. 41425
No. 41426
INSTRUCTION MANUAL
Before beginning assembly, please read these instructions thoroughly!
1:12 SCALE RADIO CONTROLLED
.10~.15 ENGINE POWERED AIR BOAT
INDEX
REQUIRED FOR OPERATION 2
RADIO PREPARATION
3
BEFORE YOU BEGIN
3
ASSEMBLY
4~16
OPERATING YOUR MODEL SAFELY
17
CHECKLIST BEFORE RUNNING
18
ENGINE DESCRIPTION
18
ENGINE STARTING & BREAK IN
18~22
MAINTENANCE
23
IN CASE THE ENGINE DOES NOT START
23
EXPLODED VIEW
24~25
SPARE PARTS & OPTIONAL PARTS
26
27~28
First-time builders should seek the advice of experienced
modellers before beginning assembly and if they do not fully
understand any part of the construction.
Assemble this kit only in places out of children's reach!
Take enough safety precautions prior to operating this model.
You are responsible for this model's assembly and safe
operation!
Always keep this instruction manual ready at hand for quick
reference, even after completing the assembly.
LENGTH: 620mm (24.4")
*SPECIFICATIONS ARE SUBJECT TO BE CHANGED WITHOUT NOTICE.
This radio control model is not a toy.
SAFETY PRECAUTIONS
© 2004 KYOSHO CORPORATION
AA AA AA
S
P
R
A
Y
C
O
L
O
R
R
K
Y
O
S
H
O
S
P
R
A
Y
C
O
L
O
R
R
K
Y
O
S
H
O
SILICONE SEAL
Special Glue
BEC
mm
DC
For more information on the radio, refer to its instruction manual.
AA-size Batteries
2
4
3
1
Servo and Receiver sizes
Wheel-type
Stick-type
Battery Box
If already supplied with the radio,
there is no need to purchase a battery
box separately.
REQUIRED FOR OPERATION
Install suitably sized servos &
receiver as indicated below.
Required for engine starting:
No.73201
WARNING:
Gasoline or kerosene
cannot be used.
Glow Fuel & Fuel Pump Plug Heater / Charger
Super Starter Pack
Plug Wrench
Lockingjig/wrench
Approx. 40mm
Approx. 20mm
Approx. 36mm
Approx. 20mm
Approx. 47mm
Approx. 33mm
No.80312
No.96152
No.96154
No.695101
Fuel-proof paint
KYOSHO SPRAY COLOR
No.76301 76403
CAUTION: Before using
Kyosho Spray Colors,
always read the instructions.
If greater fuel resistance is required, use a urethane paint.
Tools required
Hex Wrench (1.5 mm)
Drill(2.5, 3mm)
Plug Wrench
Silicone Sealant
KYOSHO Special Glue
Instant Glue
KNIFE EDGE REAMER
Phillips Screwdriver (L, M, S)
Needle Nose Pliers
Wire Cutters Scissors
Sharp Hobby Knife
CAUTION: Handle tools carefully!
2
TOOLS INCLUDED
No.695145
Spark Booster
No.695142
DC Quick Charger
2-channel radio with 2 servos.
CAUTION: Only use a surface radio with 2 channels and
2 servos !
3
3
/
No.
No.
RADIO PREPARATION
Set up the radio as explained below.
Stick-type
Wheel-type
Transmitter
Transmitter
ON
OFF
1
2
12
6
11
7
9
1
2
12
6
11
7
9
ON
OFF
1
2
3
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
Insert AA-size batteries into
the Transmitter.
Extend the Transmitter antenna.
Insert the AA-size batteries
into the battery box.
Plug in the battery box.
Unwind the Receiver
antenna.
Center the Transmitter trims.
Switch "ON" the Transmitter.
Switch "ON" the Receiver.
Make sure the servos move ac-
cording to your transmitter inputs.
Switch "OFF" the Receiver.
Switch "OFF" the Transmitter.
Retract the Transmitter antenna.
Servo
Switch
Receiver
Battery Box
5
4
3
8
10
ON
OFF
1
2
Correct
Wrong
Before assembling, please read the following carefully:
Check the contents of this kit. Should parts be missing, immediately contact the retail shop or your nearest Kyosho distributor.
When tightening a self-tapping (TP) screw: continue tightening until fastened correctly,
even if screw is hard to turn.
However, do not overtighten it as the plastic thread inside the part may strip!
First, read through this instruction manual and understand the modelÕs con-struction.
Do not use the wrong size or shaped small parts. Check the illustrations & use the correct
part for each step of assembly.
How to read the instruction manual:
BEFORE YOU BEGIN
A:
B:
C:
D:
A: Indicates the assembly step number and the section that will
be assembled.
B: Key Number, Part Name, True-to-scale Diagram, Quantity Used.
C: All parts except screws are identified by key numbers.
For purchasing spare parts, find the key number of the part
needed in the spare parts list and refer to the left column for the
corresponding order number.
D: This instruction manual uses several symbols.
Please note them during the entire assembly at the bottom of
each page.
3
A
B
C
D
Frame
6
"Left" side mark.
2
3 x 10mm
TP Screw
3 x 10mm
12
12
Cut off shaded portion.
Apply instant glue
(CA glue, super glue).
Pay close attention here!
Radio Box
1
Radio Box
2
3
Cowling
4
1
3
4
2
Leave not gaps so
it will be waterproof.
Note the direction.
1
1
2
3
4
Assemble in the
specified order.
Pay close attention here!
Painting
4
Frame
5
Frame
6
Throttle Rod (C)
Long
Short
5
2
3 x 10mm
TP Screw
3 x 10mm
6
1
3 x 10mm
TP Screw
10
11
12
11
12
4
1
8
7
7
7
7
5
9
5
6
6
5
Coat the hull's interior and exterior surfaces with glow fuel-resistant coating
as the shape of the ABS resin material may change if soaked in glow fuel.
1
2
3
Before painting, remove any dirt or oil by washing with mild detergent.
Completely dry the surfaces to be painted.
Coat in fuel-resistant paint.
Tentatively tighten.
3 x 10mm
3 x 10mm
3 x 10mm
3mm
3mm
Washer
Left side mark
Note direction of
Right side mark
7
Frame
7
Fuel Tank
Fuel Tank
8
9
6
3
3 x 10mm
TP Screw
4
3 x 10mm
TP Screw
2
3 x 10mm
TP Screw
3 x 10mm
3 x 10mm
15
15
13
14
16
Tentatively tighten.
160mm 120mm
15
Silicone Tube
Silicone Tube(120mm)
Silicone Tube(160mm)
Cut off.
Outside holes.
1
2
Cut off shaded portion.
Assemble in the
specified order.
Pay close attention here!
Hull
Engine
GS15PR OS10FP
10
11
7
1
2
4
3 x 10mm
Screw
Approx. 1mm
5mm
Flanged Nut
2.6 x 10mm
TP Screw
2.6 x 10mm
20
19
17
18
3 x 10mm
3 x 10mm
Make sure the shim is held flat between
the engine and drive washer (GS15PR).
Remove 5mm Flanged Nut from
engine and hold the propeller in
place while re-tightening the nut.
Use this hole.
1
2
2
Assemble in the
specified order.
Pay close attention here!
Hull
12
Engine
13
Muffler
14
8
4
1
3 x 10mm
Screw
4
3 x 10mm
Screw
2
2.6 x 25mm
Screw
Throttle Rod (D)
OS10FP
GS15PR
Note the
direction.
Front
24
24
22
23
24
24
22
23
25
26
28
27
3 x 10mm
9mm
14mm 13mm
3 x 10mm
3 x 10mm
2.6 x 25mm
3 x 10mm
If using OS10FP, bend
as shown.
Connect to
carburettor.
24
5
7
Pay close attention here!
Frame
Note the direction.
15
Frame
16
9
6
3 x 10mm
TP Screw
2
3 x 10mm
Screw
31
31
10
10
29
29
30
30
30 31
3 x 10mm
3 x 10mm
3 x 10mm
3 x 10mm
3 x 10mm
Screw from Step 5.
Screw from Step 7.
Connect to muffler
Note direction
of & .
30
31
1.5mm
3mm
2
3
1
Assemble left and right
sides the same way.
Assemble in the
specified order.
Make hole with Awl.
(example: 1.5mm).
Pay close attention here!
Hull
O-ring
17
Rudder
18
Rudder
19
10
Ensure smooth non-binding
movement while assembling.
3 x 10mm
3 x 10mm
Front
Note the
direction.
3 x 10mm
3 x 16mm
3 x 10mm
8
3 x 10mm
TP Screw
1
3 x 10mm
TP Screw
1
3 x 10mm
TP Screw
2
1
3 x 16mm
TP Screw
32
33
33
37
37
36
40
38
39
35
33
34
2mm
Nut
2
3
1
O P5
O P2
Apply instant glue
(CA glue, super glue).
Assemble in the
specified order.
Radio Box
Radio Box
Connect as per radio instruction manual.
Anntena
Rudder Servo
Throttle Servo
Receiver
Battery Box
Tape
20
21
Radio Box
22
11
1
1
44
46
44
46
46
47
45
44
43
45
41
41
42
Anntena
<OFF>
<ON>
OFF
ON
Switch
Supplied with the switch
O-ring P5
O-ring P2
Must be purchased
separately!
8
3 x 10mm
TP Screw
48
2
3
1
1.5mm
3
Cut off shaded portion.
Apply instant glue
(CA glue, super glue).
Assemble in the
specified order.
Pay close attention here!
Radio Box
23
12
50
50
5151
49
3 x 3mm
Must be purchased
separately!
Throttle Rod (A)
Supplied
with the servo.
Hex Wrench
49
Position as per diagram
and tighten the 3x3mm
Set Screws.
3 x 3mm
Set Screw
2
1
Use this hole.
16mm
1mm
A B
A=B
Neutral
Full Throttle
Stopping Engine
Move throttle trim to
the reverse side.
2
3
1
1.5mm
Pay close attention here!
Radio Box
25
13
3 x 10mm
TP Screw
2
53
54
3 x 10mm
Radio Box
24
50
52
Supplied
with the servo.
Hex Wrench
Rudder Rod
52
3 x 3mm
Set Screw
1
1
13mm
90
90
Adjust the angle as shown, and then
tighten the set screws.
Cut off shaded portion.
Apply instant glue
(CA glue, super glue).
Assemble in the
specified order.
Must be purchased
separately!
Use this hole.
42
2.5mm
1.5mm
28
14
57
4
Radio Box
26
Hull
27
3 x 10mm
TP Screw
1
42
55
56
3 x 10mm
Attach tape without gaps.
Waterproofing
Tape
80mm
5mm
Make hole with Awl.
(example: 1.5mm).
Pay close attention here!
Cowling
Attach tape to
the area.
( )
Decal
29
15
Decals with no number apply any place.
The decal numbers between brackets are only for the opposite side.
Apply the decals to the spots indicated.
17
42 687 5
11
12
( ) ( )
10
( )
13
14
( )
15
16
9 1 2
1 3
Pay close attention here!
Starter
7.2V Battery
30
Connector Unit
31
16
3 x 16mm
TP Screw
2
59
60
61
42
3 x 10mm
3 x 16mm
No.41425
No.41425
Remove screws to attach.
Connect to the same color.
Kit with Touch Starter
Kit with Touch Starter
Do not put your hands or
any objects into rotating
parts, as this could result in
serious accidents!
Handle fuel ONLY outdoors!
Vapors and exhausts are
very noxious and dangerous
to your health!
Right after use, do NOT
touch equipment on the
model such as the engine
and muffler, because they
generate high temperatures!
You may burn yourself
seriously by touching them!
ONLY use glow fuel for radio
control models! NEVER use
gasoline and kerosene in
R/C models as they cause
fire.
For accident prevention, do not run your model under
the following circumstances:
When rivers are swollen or their current is strong!
When the boat behaves or operates strangely!
In order to avoid accidents and personal injury, be sure to observe the following:
17
PROHIBITED
PROHIBITED
NEVER use fuel indoors or in places with open fires and
sources of heat!
Store fuel ONLY in cool, dry and dark places out of
childrenÕs reach! Tightly shut the cap!
Do NOT dispose of empty fuel
cans into a fire! There is danger
of explosion!
In the sea or in other salt water.
?
?
?
?
?
When radio batteries are low on power!
OPERATING YOUR MODEL SAFELY
01
01
DO NOT swallow fuel and
avoid contact with eyes! Do
the following immediately: if
fuel is swallowed, in-duce
vomit-ing. If fuel gets into
eyes, rinse them and consult
an orphamologist!
In areas where there are lots of people.
Also make sure that nobody is using the same
frequency as you are at the same time!
In strong winds.
Discover a new world of pleasure with R/C boats.
Wheth-er you run your boat on lakes, rivers or else-
where, take precautionary measures to avoid accidents.
Fuel is highly inflammable and highly explosive!
ENGINE DESCRIPTION
STARTING AN ENGINE WITH RECOIL STARTER (1)
18
1
2
Glow Plug:
Ignites the compressed air/fuel mixture.
Needle Valve:
Adjusts the amount of fuel
inflow for the air/fuel mixture.
Idle Adjustment Screw:
Adjusts the carburetor opening
at idle and low speeds.
Carburetor:
Mixes air and fuel and controls
engine rpm.
Recoil Starter:
To crank the engine.
Throttle Lever:
Adjusts the amount of air/fuel mixture
inflow and controls engine rpm.
Engines include many high-precision parts.
If disassembling engines carelessly, their
original performance may be lost!
Fill the tank.
1
WARNING: As exhausts and fuel vapors
are noxious to health, use fuel only outdoors!
Switch on the radio.
ON
ON
2
Check!
Throttle Lever
Adjust the needle valve.
3
Gently tighten the needle valve all
the way.
Refer to the engine instruction manual
and unscrew the needle valve as far
as specified.
1
2
Idle
CHECKLIST BEFORE RUNNING
Are all screws securely tightened?
Do moving/rotating parts move smoothly? Are they greased
to ensure non-binding movement?
Is fuel line clear and free of cracks? Is it connected properly.
Are the muffler and exhaust damage-free and well connected?
Are the transmitter and receiver batteries fresh? Is the
battery box securely installed?
Do the servo horns and linkages move without binding?
Is the running area safe?
Is anybody using the same frequency as you?
19
BREAK IN
Start the engine.
6
1
2
Engine starting becomes easier
when the throttle trim is raised.
Start the engine.
Throttle Trim
Throttle Stick
Run up the engine.
7
When rpm become stable, lower the throttle trim, and disconnect
the glow plug heater.
8
CAUTION: Beware of burning yourself!
After starting or running, engines and
mufflers become very hot!
After stopping the engine,first switch
off the receiver, then the transmitter.
9
OFF
OFF
Do not pull the recoil starter rope
past its 50cm limit for you may
break it.
To stop the engine, lower the Throttle Trim, or slightly lower the
Throttle Stick.
4
Choke the
engine.
Heat the glow plug.
5
STARTING AN ENGINE WITH RECOIL STARTER (2)
The break-in is necessary to ÒprepareÓ brand new engines for regular
and smooth running! If you fail to break-in an engine, the lubricating
oil inside does not spread and, as a result, the engine will be caked
with burns; running becomes difficult and engine life is dramatically
shortened.
Because RPM are not stable when performing break-ins, avoid windy
days and rough seas! Also, take precautionary measures for retrieving
your boat if the engine stalls while your model is off-shore.
When fuel reaches this point, push
the choke button one more time.
ENGINE ADJUSTMENT
Needle Valve
1
1
1 2
1 2
3
2
20
No.41425
1
2
3
4
5
Join the connector unit and the battery.
If you make it run for over 5 seconds,
the starter will generate heat or even set on fire.
WARNING
Adjust in the order and once the break-in is completed.
Needle Valve Adjustment (Maximum Rpm Adjustment)
Start the engine as explained in the chapter <ENGINE STARTING>
and run your boat.
When tightening the needle valve further, exhausts become in-visible and
rpm decrease. Running the engine with this setting will damage it.
Immediately unscrew the needle valve. Note that for normal running, the
needle valve is unscrewed 10¡~20¡ from the valveÕs optimal setting position!
Kit with Touch Starter
HOW TO START THE ENGINE WITH TOUCH STARTER
Prepare a fully charged 7.2V battery.
Switch the transmitter ON first, then the receiver. Check if the linkages move properly.
Check that the carburetor is open about 1mm.
Before filling the fuel tank, connect the 7.2V battery to the starter unit. (It will start).
If the starter rotates quickly, the setting is normal. (Turn it off after 2 or 3 seconds).
Choke Button
Put fuel in fuel tank and push the Choke Button to send fuel into the carburetor. Connect the 7.2V battery to the starter-wiring unit to start
the engine. Do NOT connect the 7.2V battery for more than 5 seconds at a time. If the starter is working properly and the engine
still doesn't start, send a little more fuel to the caburetor by pushing the Choke Button a few more times. Once the engine is running,
quickly cease starting the engine.
Be careful not to run the engine at too high RPM. Also when the engine is being started, the glow plug is being heated
automatically so please do not try to heat the plug any other way.
Watch the speed of your boat when run-ning straight ahead at full throttle.
Tightening the needle valve 10¡ at a time will increase speed. When
your boat reaches top speed, the needle valve setting is optimal.
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