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Then, immerse the engine in a container of alcohol.
Rotate the crankshaft while the engine is immersed.
If foreign matter is visible in the alcohol, rinse the
engine again in clean alcohol. Finally, shake off
and dry the alcohol ,and inject some after-run oil in
the glowplug hole and rotate the crankshaft several
times by hand.
Reinstall the carburetor and glowplug on the engine
and keep it in a dry place after putting in a vinyl bag.
O.S. GENUINE PARTS & ACCESSORIES
O.S.GLOW PLUG
No.7 (71607100)
No.8 (71608001)
No.10 (Fomer A5) (71605100)
RADIAL MOTOR MOUNT
(71904200)
PROPELLER LOCKNUT SET FOR SPINNER
5/16"-M5
5/16"-M4
(45910200)
(45910300)
SUPER FILTER
( L )
(72403050)
NON-BUBBLE WEIGHT
(71531000)
NON-BUBBLE WEIGHT (S)
(71531010)
BLIND NUTS
(10pcs./sets)
( 79870050 )
M4
(79870040)
M5
LOCK WASHER (10sets)
M5
M4 (55500003)
(55500004)
O.S. SPEED SILICONE FUEL LINE
(72506100)
O.S. SPEED PLUG WRENCH
(71520100)
LONG SOCKET WRENCH WITH PLUG GRIP
(71521000)
THREE VIEW DRAWING
Dimensions(mm)
SPECIFICATIONS
Displacement
19.96 cc / 1.218 cu.in.
Bore
30.4 mm / 1.197 in.
Stroke
27.5 mm / 1.083 in.
Output
3.1 ps / 3.06 hp / 9.000 r.p.m.
Practical R.P.M.
1,800-9,500 r.p.m.
Weight
647 g / 22.82 oz.
(Engine)
176 g / 6.21 oz.
(Silencer)
(When 90 adaptor is installed)
219.2 g / 7.73 oz.
245 g / 8.64 oz.
(When Extention adaptor is installed)
48
27
46.5
67
The specifications are subject to alteration for improvement without notice.
ENGINE EXPLODED VIEW & PARTS LIST
Type of screw
C...Cap Screw
8
9
CARBURETOR EXPLODED VIEW & PARTS LIST
N.+M3x6
1
N.+M3.5x6
144.7
46
2- 4.6
40.6
25
UNF5/16-24
39.7
69.8
30.4
139.9
C.M3x15
1
2
3
5
4
6
7
C.M3x8
14
13
12
17
11
15
16
10-1
10
Type of screw
N...Round Head Screw S...Set Screw
3
3-1
3-2
2
4
5
6
8-1
7-1
8
9
7
10
21
48
http://www.os-engines.co.jp
C
No. Code No.
1
29124000
Cylinder Head
2
29123100
Cylinder Liner
3
29123400
Piston Ring
4
29123200
Piston
5
29206000
Piston Pin
6
28117000
Piston Pin Retainer (2pcs.)
7
29125000
Connecting Rod
8
29182000
Carburetor Complete (Type 70D)
9
45910100
Locknut Set
10
29128000
Drive Hub
10-1
29008219
Woodruff Key
11
46120000
Thrust Washer
26731010
Crankshaft Ball Bearing (F)
12
13
29121000
Crankcase
46030008
14
Crankshaft Ball Bearing (R)
15
29122000
Crankshaft
29121400
16
Gasket Set
17
29127000
Cover Plate
71608001
Glow Plug No.8
72200080
Needle Valve Extension Cable Set
29122500
E-5020 Silencer Assembly
29122540
Gasket
29122530
Assembly Screw
22681957
Pressure Nipple (No.7)
29122520
Silencer Retaining Screw (C.M4x45 2pcs.)
29122600
E-5020 Silencer Extension Adapter
29122610
Extention Adapter Retaining Screw (M4x90 2pcs.)
29122700
E-5020 Silencer 90 Adapter
29122510
90 Adapter Retaining Screw (M4x20 2pcs.)
CAP SCREW SETS ( 10pcs./sets )
Code No.
Size
Cover Plate Retaining Screw (4pcs.)
79871110
M3x8
79871150
M3x15
Cylinder Head Retaining Screw (5pcs.)
No. Code No.
1
27881400
Throttle Lever Assembly
2
29182200
Carburetor Rotor
3
29181620
Mixture Control Valve Assembly
3-1
46066319
"O" Ring (L) (2pcs.)
3-2
22781800
"O" Ring (S) (2pcs.)
4
29182100
Carburetor Body
5
45581820
Roter Guide Screw
6
22681953
Fuel Inlet (No.1)
7
22681980
Needle-valve Assembly
7-1
24981837
"O" Ring (2pcs.)
S.M3X3
7-2
26381501
Set Screw
8
27381940
Needle-valve Holder Assembly
8-1
26711305
Ratchet Spring
9
Carburetor Rubber Gasket
29015019
7-2
10
25081700
Carburetor Retaining Screw
2- 4.2
A
図面ビューA
2-M4x0.7
105.4
27
UNF5/16-24
46.5
39.7
67
1.3
6-15 3-Chome Imagawa Higashisumiyoshi-ku
Osaka 546-0003, Japan TEL. (06) 6702-0225
Copyright 2013 by O.S. Engine Mfg. Co., Ltd. All rights reserved. Printed in JAPAN.
Description
Pcs. used in an engine
Description
67.2
43.6
14
11.3
13
40.6
21
25
69.8
30.4
139.9
FAX. (06) 6704-2722
011501
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