THE FINEST RADIO CONTROL MODELS
R
No. 31081
REQUIRED FOR OPERATION
RADIO PREPARATION
BEFORE YOU BEGIN
ARRANGEMENT OF PLASTIC PARTS ON RUNNERS
ASSEMBLY
ADJUSTMENT
OPERATING YOUR MODEL SAFELY
EXPLODED VIEW
SPARE PARTS & OPTIONAL PARTS
2 3
3
4 5
6 7
8 25
25 26
27
28 30
31 34
INDEX
Before commencing assembly, please read these instructions thoroughly.
SAFETY PRECAUTIONS
This radio control model is not a toy!
First-time builders should seek the advice of experienced modellers before
commencing 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.
*SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.*SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE.
© 2000 KYOSHO
INSTRUCTION MANUAL
INFERNO MP-7.5
1
2ch radio control set with 2 servos.
Stick-type
2ch radio set.
Wheel-type
2ch radio set.
Battery for Receiver
AA-size Batteries (For Transmitter)
AAAA
AAAA
Servo Receiver
REQUIRED FOR OPERATION (1)
Suitable servos & receiver
2
Engine & Muffler
This kit requires a .21 class engine.
This kit requires a 2 channel radio con-
trol set with 2 servos.
Because there are stick-type and wheel-
type transmitters, use which ever fits
your convenience best.
Switch the reverse (transmitter) for the
throttle control.
For more information on the radio con-trol
set, refer to its instruction manual.
3
Required for engine starting:
No.71312
6V-600mAh
RX
RX Ni-Cd Battery
No.71641
6V-1000mAh
Ni-Cd Battery
Engine for .21-class cars
Only using a type of .21
class engine, which is made
crank shaft and pilot shaft
as one part (SG shaft only).
Muffler
Manifold
Plug
No.96422
Quick Fill Fuel Bottle
No.IFW-37
SP
(FEMCA)
SP Silencer (FEMCA)
No.39514
Manifold (O.S.21RZ, Picco, Nova Rossi)
No.39516
Manifold (
O.S.21RG)
No.96411
One-touch Plug Heater Set
No.80312
Locking Jig & Wrench
No.1793
Starter Box
Glow Fuel Fuel Pump Plug Heater
Plug Wrench Starter Battery
4
Paint
5
Other equipment required.
S
I
L
O
C
N
E
O
I
L
I
S
I
L
O
C
N
E
O
I
L
I
Shock Oil
M
Strap (M)Gear Differential oil or
Gear Differential Grease
For painting the body, use Kyosho
paints for models!
No.1701KP / KY
Fluorescent Strap
KYOSHO SPRAY COLOR
No.76501 76711
No.2230
POLYCA COLOR
Joining Pipe
No.92515
Muffler Joining Pipe
No.73802
RC
RC Model Fuel
PRO Spec Fuel (Buggy)
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
2
6
Tools required
REQUIRED FOR OPERATION (2)
SPECIAL TAPER REAMER
No.80311
No need to pre-drill!
Drills neat 1mm to 15mm
holes directly!
ROUND CUTTER & SANDER
No.1829
For trimming bodies!
Cutting along curved lines
never was so easy!
TOOLS INCLUDED
Sharp Hobby Knife
Phillips Screwdriver (L.M.S)
Needle Nose Pliers
Box Wrench
RADIO PREPARATION
Instant Glue
Cross Wrench
Grease
Wire Cutters
Grease
Awl
Set up the radio control system as indicated below.
1
2
3
5
6
7
8
9
10
11
4
1
START
FINISH
2
3
4
5
6
7
8
Install batteries. (Transmitter)
Extend the antenna. (Transmitter)
Connect the charged Ni-Cd battery to
the receiver.
Extend the antenna. (Receiver)
Center the trims.
Switch on. (Transmitter)
Switch on. (Receiver)
Make sure the servos are in command.
Switch off. (Receiver)
Switch off. (Transmitter)
Retract the antenna. (Transmitter)
1
2
3
4
5
6
7
8
9
10
11
Screw Cement
Rubber Cement
Hex Wrench (1.5mm, 2mm, 2.5mm, 3mm)
3
1
Read through the manual before you begin, so you will have an overall idea of what to do.
BEFORE YOU BEGIN (1)
R
L
Check all parts. If you find any defective or missing parts, contact your local dealer or our Kyosho Distributor.
2
How to read the instruction manual:
3
No.4, No.5, No.6
5 x 10mm
Metal Bushing
4
King Pin
4
5.8mm
Pillow Ball (Black)
2
3
6
Key Number, Part Name, True-to-scale
Diagram, Quantity Used
This instruction manual uses seve-
ral symbols. Please note them
during the entire assembly.
All parts except screws are identified by
key numbers. For purchasing spare parts,
find the key no. of the part needed in the
spare part list and refer to the left column
to look up the corresponding order no.
Symbols used throughout the instruction manual, comprise:
4
Apply epoxy glue.
Apply instant glue (CA glue, super glue).
Apply grease.
Apply threadlocker (screw cement).
Assemble as many times as
specified (here: twice).
x2
Assemble left and right sides
the same way.
True-to-scale diagram.
Must be purchased separately!
Tentatively tighten.
Cut off excess.
Drill holes with the specified
diameter (here: 2mm).
Ensure smooth non-binding
movement while assembling.
Pay close attention here!
4
5
6
4
5
1
7
5
8
2
Part bags used.
Assemble in the specified
order.
Front Suspension
1
2mm
Apply rubber cement.
1901
No.1901
Ball bearings are optional!
(with optional part no.)
Cut off shaded portion.
4
Self-tapping (TP) screws cut threads into the parts when being tightened. Excessive force may
permanently damage parts when tightening TP screws. It is recommended to stop tightening when
the part is attached or when some resistance is felt after the threaded portion enters the plastic.
6
The threads are stripped.Overtightened.
Correct
Wrong
This kit contains screws and hardware in different metric sizes and shapes.
Before using them, check the screws on the true-to-scale diagrams on the left side in each assembly step. Some screws are extras.
5
SCREWS
Screw
Cap Screw
F/H Screw
Self-tapping (TP) Screw
TP F/H Screw
Set Screw
OTHER HARDWARE
Screw
3mm
12mm
3mm
12mm
Flat Head (F/H) Screw
Washer Nut
3mm
Metal Bushing Bearing
5mm
10mm
3mm
E-ring
Pillow Ball
6.8mm
5
BEFORE YOU BEGIN (2)
MEMO
No.1
No.4
No.5
6
ARRANGEMENT OF PLASTIC PARTS ON RUNNERS (1)
158 158
164164
166
166
166 166
163
166 166
17
49
49
70
74
41
41
72
191
21
192
62
189
190
61
29
29
25
24
31
31
30
28
37
16
36
34
35
36
Use the parts within the dotted lines as tunning options.
Shaded parts are not used.
Shaded parts are not used.
1
No.6
No.9
7
ARRANGEMENT OF PLASTIC PARTS ON RUNNERS (2)
49
16
65
146
142
141
147
143
144 145
92
134
182122
123
133
126
149
149
125 129
127
133
101
128
182
91
64
49
17
Shaded parts are not used.
reguired, when using a stabilizer for front.
49
2
49
No.2
No.2
No.2, No.4,
No.5, No.10
8
Part bags used.
For front and rear
For center
Flat surface
4x4mm
3x10mm
3x12mm
Diff. Oil
1
Gear Differential
2
Gear Differential
3
Rear Gearbox
Adjust the backlash
with the shims.
x2
Assemble as many times
as specified.
Assemble in the specified order.
Apply grease. Must be purchased
separately!
8
3 x 10mm
TP F/H Screw
2
4 x 20mm
TP Screw
5
5
16
19
,
20
19
,
20
17
1
3
2
21
4x25mm
4x20mm
4
3 x 12mm
TP F/H Screw
18
2
x1
x2
For front and rear
For center
x1
x2
5
2
6
5
5
12
15
13
1
1
2
3
2
4
1
6
4
2
10
10
9
11
11
11
7
(For center)
7
(For center)
8
(For center)
8
(For front and rear)
4
(For front and rear)
(For front and rear)
3
5 8 x 16mm
Ball Bearing
3
4 x 4mm
Set Screw
12
11
4 x 10mm
Shim
3
6 6mm
O-ring
3
4 2.6 x 14mm
Shaft (Black)
3
4 2.6 x 14mm
Shaft (Black)
3
5 8 x 16mm
Ball Bearing
3
6 6mm
O-ring
2
4 x 25mm
TP F/H Screw
19
20
13 x 16mm
Shim
2
5 8 x 16mm
Ball Bearing
TP
TP
TP
( )
( )
( )
( )
( )
( )
O
O
TP
Thick
Thin
No.4, No.5,
No.10
No.4, No.5, No.10
No.5, No.10
9
Part bags used. Apply threadlocker (screw cement). Pay close attention here!
4
Rear Gearbox
5
Rear Shock Stay
6
Wing Stay
Tighten the set screw to the flat spot.
Note the types of screws !
24
23
22
25
26
27
28
29
31
31
30
29
5x4mm
4x10mm
4x15mm
3x20mm
3x10mm
3x15mm
3x15mm
4x20mm
4x15mm
4x15mm
3x12mm
4x10mm
2
4 x 15mm
TP Screw
2
4 x 20mm
Screw
Holes for
mounting.
1
5 x 4mm
Set Screw
2
4 x 10mm
Screw
23
1
Joint Cup (L)
2
4 x 15mm
TP Screw
2
3 x 20mm
Cap Screw
1
3 x 10mm
TP Screw
2
4 x 10mm
Screw
2
3 x 12mm
TP Screw
4
3 x 15mm
TP Screw
Assemble left and right
sides the same way.
TP
L
TP
TP
TP
TP
No.4, No.5
No.5, No.10
No.4, No.10
10
Part bags used.
7
Rear Suspension
8
Rear Suspension
9
Rear Suspension
x2
Assemble as many times
as specified.
Assemble in the
specified order.
Pay close attention here!
Assemble left and right
sides the same way.
For adjusting the
ground clearance.
Top
Bottom
1mm
“ R ” maked.
For left side.
For right side.
2
42
5 x 35mm
Set Screw
approx. 14.5mm
2
54
2.6 x 17mm
Shaft
2
5 x 4mm
Set Screw
2
3 x 8 x 5mm
Plastic Collar
36
35
40
5
34
36
5
2
1
3
54
33
39
38
39
37
43
44
44
45
4x12mm
3x10mm
5x4mm
Holes for mounting.
For left side.
For right side.
41
42
41
“ L ” maked.
x2
True-to-scale diagram.
2
4 x 12mm
Set Screw
4
44
E-ring (Black)
4
39
E-ring (Silver)
4
5 8 x 16mm
Ball Bearing
2
38
3 x 48mm
Shaft (Black)
4
41
7.8mm
Ball End
2
43
4 x 74mm
Shaft
2
3 x 10mm
Cap Screw
2
45
7.8mm
Flange Ball (Black)
Adjust the wheel base by using the other
spacer instead of .
36
“ R ”
“ L ”
14.5mm
E
E
36
No.4, No.10
No.4,
No.10
No.9, No.10
11
Part bags used.
10
Rear Suspension
11
Rear Suspension
12
Chassis
2
3 x 12mm
Screw
4
2.6 x 5mm
F/H Screw
2
3 x 4mm
Set Screw
Assemble in the
specified order.
Pay close attention here! Ensure smooth non-binding
movement while assembling.
Assemble left and right
sides the same way.
Holes for mounting.
46
47
48
49
49
50
1
3
2
4
1
2
3mm
3x4mm
3x4mm
3x3mm
3x3mm
3x12mm
2.6x5mm
2.6x5mm
55
4x20mm
4x20mm
51
53
52
51
3x10mm
3mm
Nylon Nut
2
46
2
26mm
Suspension Bolt
2
48
7.8mm
Ball
2
3 x 10mm
Set Screw
2
3 x 3mm
Set Screw
2
5.8mm
Ball
53
2
52
Stabilizer Ball
4
51
5.8mm
Ball End (S)
4 x 20mm
TP F/H Screw
4
S
TP
No.4,
No.9,
No.10
No.5, No.6, No.10
12
Part bags used.
Tighten the set screw to
the flat spot.
13
Chassis
15
Front Gearbox
14
Front Gearbox
Apply threadlocker (screw cement).
Assemble in the specified order.
Apply grease.
1
3 x 18mm
Cap Screw
1
76
6.8mm
Ball
No.6, No.10
5
5
16
18
19
,
20
19
,
20
17
60
1
2
3
2
4x20mm
4x20mm
62
181
61
4x15mm
4x20mm
5x4mm
76
57
58
56
3x18mm
3x10mm
1
56
Torque Rod Ball
2
58
6.8mm
Ball End (L)
4
4 x 20mm
TP Screw
2
5 8 x 16mm
Ball Bearing
19
20
13 x 16mm
Shim
1
5 x 4mm
Set Screw
4 x 15mm
TP F/H Screw
2
4 x 20mm
TP F/H Screw
2
181
1
Joint Cup (S)
Adjust the backlash
with the shims.
1
3 x 10mm
F/H Screw
L
TP
Thick
Thin
TP
TP
S
No.6, No.10
No.6, No.10
No.5, No.6, No.10
13
Part bags used.
16
Front Shock Stay
17
Front Suspension
18
Front Suspension
2
3 x 12mm
TP Screw
2
2.6 x 17mm
Shaft
Apply threadlocker
(screw cement).
Assemble in the
specified order.
Assemble left and right
sides the same way.
27
63
3x20mm
4x10mm
4x10mm
3x12mm
3x12mm
64
68
69
69
33
5
5
66
54
67
65
4x10mm
4x10mm
5x4mm
71
43
39
39
44
44
70
4x12mm
1
2
3
1
2
3
1
2
3
For right side.
For right side.
For left side.
For left side.
4
4 x 10mm
Screw
2
3 x 20mm
Cap Screw
4
4 x 10mm
Cap Screw
4
5
54
8 x 16mm
Ball Bearing
2
5 x 4mm
Set Screw
69
Knuckle Collar
4
2
4 x 12mm
Set Screw
4
39
E-ring (Silver)
4
44
E-ring (Black)
2
43
4 x 74mm
Shaft
2
71
3 x 38mm
Shaft
ÒLÓ maked.
ÒRÓ maked.
For adjusting the ground clearance.
Top
Bottom
1mm
Holes for
mounting.
Pay close attention here!
TP
E
E
ÒLÓ
ÒRÓ
No.5, No.6, No.10
No.6, No.10
No.8
14
Part bags used. Apply rubber type glue.Assemble in the
specified order.
Pay close attention here!
Assemble left and right
sides the same way.
19
Front Suspension
20
Chassis
21
Center Gearbox
2
76
6.8mm
Ball
2
73
5 x 20mm
Set Screw
4 x 20mm
TP F/H Screw
4
74
76
72
73
39
75
46
39
13mm
3mm
78
78
81
79
79
80
80
82
81
83
77
4x20mm
4x20mm
3x10mm
Center Differential
1
2
3
4
1
2
2
4
39
E-ring (Silver)
2
75
3 x 40mm
Shaft (Black)
46
2
26mm
Suspension Bolt
2
2
72
6.8mm
Ball End
3mm
Nylon Nut
1
3 x 10mm
TP Screw
81
4
12mm
Disk Plate Bolt
4
79
Brake Pad (Black)
4
78
Brake Caliper
approx. 6mm
approx. 7mm
TP
6mm
E
TP
7mm
No.8, No.9, No.10
No.8, No.9, No.10
No.7, No.10
15
Part bags used. Apply grease.Pay close attention here! Tentatively tighten.
24
Steering
23
Center Gearbox
22
Center Gearbox
4
3 x 6mm
F/H Screw
86
87
88
89
89
90
91
92
93
94
96
96
95
97
98
98
99
99
84
47
149
149
3x6mm
3x6mm
4x15mm
4x15mm
3x10mm
3x10mm
3x3mm
3x3mm
3mm
3mm
3x10mm
3x10mm
4x10mm
4x10mm
Use thick one.
Long
Short
(Long)
(Short)
4 x 15mm
TP F/H Screw
4
1
81
4mm
O-ring
2
3 x 3mm
Set Screw
4
3 x 10mm
TP Screw
2
4 x 10mm
Screw
2
3 x 10mm
Washer
2
3mm
Flanged Nut
2
99
Steering Pin
2
98
Steering Collar
2
96
6 x 10mm
Metal Bushing
91
88
87
Note the
direction.
TP
O
TP
( )
( )
Bend the rods
if they contact
the plate.
7mm14mm
No.7, No.9,
No.10
No.3, No.10
16
Part bags used.
Note the types
of screws !
Use taper collet for
assembling with com with kit.
25
Steering
26
Engine
1
5 x 8 x 0.2mm
Shim
Apply threadlocker
(screw cement).
Pay close attention
here!
Ensure smooth non-binding
movement while assembling.
Assemble left and right
sides the same way.
True-to-scale
diagram.
Must be purchased
separately!
approx. 24.5mm
58
59
102
100
101
103
3x15mm
3x15mm
3mm
3mm
4x10mm
4x10mm
104
105
106
107
108
109
110
111
111
112
3x10mm
5x8x0.2mm
Assemble the following parts
with pulling the crankshaft.
Engine
105
(Flanged)
3
4 x 10mm
Screw
2
4 x 10mm
F/H Screw
3 x 15mm
F/H Screw
2
3mm
Nut
2
3mm
Flanged Nut
4
59
6.8mm
Ball (silver)
4
58
6.8mm
Ball End (L)
2
102
4 x 40mm
Adjustable Rod
2
103
Tapered Collar
1
3 x 6mm
Cap Screw
4
3 x 10mm
Cap Screw
1
110
5 x 20mm
Shim
105
1
Tapered Coret
1
5 x 10mm
Washer
2
111
5 x 10mm
Ball Bearing
1
107
Pilot Nut
4
4x10mm
4x10mm
Long
Short
Note the direction.
100
Remove these screws
and retighten after
installing .
24.5mm
105
( )
L
3x6mm
5x10mm
5x8x0.2mm
3mm
A number and / or type of shim need to be adjusted depending on the type of engine.
1
3mm
Washer
No.3, No.10
No.9, No.10
17
Part bags used.
27
Engine
Insert a sheet of paper
before installing.
Bend so it fits into the
muffler.
Manifold
Nylon Strap
Muffler Joining Pipe
Muffler
Muffler
28
Must be purchased separately!
1
4 x 4mm
Set Screw
2
3 x 6mm
F/H Screw
180
180
4x10mm
4x10mm
4x6mm
4x6mm
Front
3x6mm
4x4mm
184
185
4
4 x 6mm
F/H Screw
4
4 x 10mm
Flanged Cap Screw
1
No.9, No.10
No.9, No.10
No.10
18
Part bags used.
To protect the engine from dirt infiltration,
purchase Kyosho's No.1876 Fuel Filter.
Note the types
of screws !
29
Fuel Tank
30
Radio
31
Radio
2
3 x 8mm
Screw
1
2 x 30mm
Screw
2 x 20mm
Screw
1
7
2 x 8mm
TP Screw
Pay close attention here! Drill holes with the specified diameter.
2mm
Must be purchased separately!
2
130
Hook Pin
130
130
125
193
131
126
127
128
129
183
121
122
183
123
3x8mm
2x20mm
2x30mm
2x8mm
2x8mm
2x8mm
3x10mm
3x10mm
3x15mm
3x15mm
Antenna
Better to fill some sponge
between radio box and
receiver as well as battery.
Switch
Receiver
Battery
Switch
124
Cut the Silicone Tube
to 75mm Length.
2
3 x 15mm
TP Screw
2
3 x 10mm
TP F/H Screw
2mm
124
TP
2mm
TP
TP
No.1876
75mm
No.10
No.9, No.10
No.7, No.9, No.10
19
Part bags used.
32
Radio
33
Radio
34
Radio
3x10mm
3x10mm
4
3 x 10mm
TP F/H Screw
Throttle Servo
Steering Servo
(For transponder.)
2
3 x 15mm
TP Screw
6
3 x 10mm
TP Screw
4
3 x 10mm
TP F/H Screw
Note the types of screws !
Connect as per radio.
134
3x15mm
3x10mm
3x12mm
3x12mm
3x10mm
3x10mm
132
133
133
182
182
182
103
103
Pay close attention here! Cut off shaded portion.Must be purchased separately!
3 x 15mm
F/H Screw
2
2
3mm
Flanged Nut
2
135
5.8mm
Ball End (L)
1
136
3 x 40mm
Adjustable Rod
2
5.8mm
Ball
53
2
103
Tapered Collar
135
135
136
53
Parallel
3mm
3x15mm
3x15mm
20mm
8
3 x 12mm
Screw
Cords
3mm
TP
TP
TP
TP
( )
L
No.7,
No.9,
No.10
20
Part bags used.
35
Radio
x2
36
Throttle Linkage Adjustment
With O.S. and NOVA Rossi engines :
With Picco engines :
Brake Adjusting Knobs
Upper linkage Ð rear brak
Lower linkage Ð front brake
< Brake >< Neutral > < High Throttle >
1mm
6
3 x 3mm
Set Screw
3
2 x 6mm
Cap Screw
1
2.6mm
Nylon Nut
1
138
Spring
4
139
2mm
Stopper
140
2
Adjuster Nob
1
2.6 x 16mm
Cap Screw
2
148
Linkage Spring
3
2x145mm
Adjuster Rod
137
Servo Horn
Throttle Rod
Brake Rod
139
146
146
148
148
143
137
140
139
142
141
137
138
139
147
142
141
147
3x3mm
3x3mm
Throttle Rod
Brake Rod
Note the directions of
and .
145
144
approx. 19mm
approx. 7mm
2.6x16mm
3x3mm
2x6mm
2x6mm
2.6mm
98mm
3x3mm
20mm
87mm
3x3mm
Parallel
146 146
146
1mm
x2
Assemble as many
times as specified.
Tentatively tighten.Ensure smooth non-binding
movement while assembling.
Cut off shaded portion.
Adjust with this screw
the carburetor so it
cannot close more
than 1mm.
147141
Must be purchased
separately!
19mm
7mm
OS.
< > < > < >
1mm
141 147
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