2609-93112 (811)
OWNER’S MANUAL
MODEL:
G380PU
G380PU-1
警 告
WARNING
• Do not modify any parts of the engine.
• This engine is designed to be used to Radio
controlled products.
• In case any modification by customer,
ZENOAH shall not bear any responsibility from
the damage caused by such modification.
• Keep ignition system well maintained.
● この製品はラジオコントロール
飛行機用に設計されています。
● 改造、組み替えされて使用され
た場合当社は一切の責任を負い
ません。
● 特に電装品は常に点検、整備し
てご使用ください。
November 2008
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4. When engine first fires, open the choke and turn the propeller again in the same manner.
5. When the engine is started,warm it up for 2 to 3 minutes at low speed.
Stopping Engine
Ground the black wire from the source coil to the engine, and the engine will stop.
4. Carburetor Adjustment
The carburetor comes with a standard setting.
This setting is for optimum performance under the barometric pressure and climactic
conditions at the factory.
Therefore, the carburetor should be readjusted wIth a load applied (with the propeller
mounted) after the engine having been warmed up.
[ NOTE ]
1. Adjustment standards :
LOW SPEED NEEDLE : 1 1/4 turns open
HIGH SPEED NEEDLE : 11/2 1/4 turns open
2. IDLE SCREW - Turn clockwise to increase the idling rpm.
3. LOW SPEED NEEDLE - This needle controls fuel flow in the low rpm range.Turning
clockwise makes the fuel lean. Turning counterclockwise makes the fuel rich.
4. HIGH SPEED NEEDLE - This needle controls fuel flow in the high rpm range. Turning
clockwise makes the fuel lean and the reverse makes it rich. Set the needle 1/4 turns
open from a position where the peak rpm is obtained on the ground.
5. Do not overtighten the needles.
6. Warm up the engine before adjusting the carburetor.
7. Make sure to stop the engine while adjusting the carburetor.
3
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5. Daily Inspection
• Check if screws and bolts are firmly tightened.
• Check if there is any fuel leakage.
• Check if there is any damage (crack or deformation).
• Check if the fuel line is clogged.
• Check if the spark plug and the muffler are contaminated.
Table of Tightening Torque
Applicable positions
and Part Names
Illustration
index No.
Tightening Torque
1. Crankcase fixing bolt
2. Flywheel fixing hub nut
3. Muffler fixing bolt
14
30
12
43
4
50 ~ 80 kg-cm, 3.6 ~ 5.8 ft-lbs.
150 ~ 190 kg-cm, 10.8 ~ 13.7 ft-lbs.
40 ~ 50 kg-cm, 2.9 ~ 3.6 ft-lbs.
20 ~ 25 kg-cm, 1.4 ~ 1.8 ft-lbs.
30 ~ 40 kg-cm, 2.2 ~ 2.9 ft-lbs.
30 ~ 40 kg-cm, 2.2 ~ 2.9 ft-lbs.
30 ~ 40 kg-cm, 2.2 ~ 2.9 ft-lbs.
150 ~ 180 kg-cm, 10.8 ~ 13.0 ft-lbs.
4. Ignition module fixing screw
5. Insulator fixing screw
6. Carburetor fixing screw
7. Mount plate fixing screw
8. Spark plug
45
47
42
WARNING !
When the engine is not in use, take great care in casually flipping the prop as you might do
in checking compression or for adequate lubrication in engine. These ignition engines will fire
and start with just one weak flip. Broken arms have already resulted from just such an
unexpected experience.
4
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6. Specifications
Model .......................................................G380PU · G380PU-1
Type .........................................................Single cylinder gasoline engine, 2-stroke air cooled
Displacement............................................37.4cc (2.28cu. in.)
Bore x Stroke............................................38mm x 33mm (1.496 in. x 1.299 in.)
Compression ratio ....................................6.8 : 1
Fuel...........................................................Gasoline mix
(mixture ratio gasoline to 2-stroke oil : 25 ~ 40 : 1)
Carburetor ................................................WALBRO WT338
Ignition .....................................................Flywheel magneto (contact-less type)
Spark plug ................................................CHAMPION RCJ7Y
Service engine speed...............................7000 ~ 9000rpm
Allowable engine speed (instantaneous) ........12000rpm
sizes (L x W x H) ......................................170 x 130 x 215mm (6.30 x 5.12 x 8.46 in.)
(Length covers as far as the end of the hub nut.)
Weight ......................................................2.0kg (4.4 lbs)
Specifications are subject to change without notice.
5
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G380PU, G380PU-1
7. Parts List
6
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G380PU, G380PU-1
Q' ty
/unit
Q' ty
Index
No.
Index
No.
Parts No.
Description
Parts No.
Description
/unit
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
2630-81120 • Cover
3310-81130 • Screw
3304-81140 • Gasket
1172-81150 • Diaphragm
3356-81310 • Valve
2850-81290 • Gasket
3310-81260 • Diaphragm
3310-81280 • Cover
2670-81270 • Spring
3310-81240 • Screw
3310-81250 • Pin
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
4
1
1
1
1
1
2
1
4
1
2
3
4
5
6
3378-12111 Cylinder
3330-14111 Insulator
3330-14121 Gasket
0260-20520 Screw
3330-14132 Gasket
2609-15001 Muffler assy
1
1
1
2
1
1
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
2841-15210 Gasket
3330-15220 Bolt
1
2
1
4
4
1
1
1
1
1
2
2
1
1
2
1
1
1
1
1
1
1
1
2
1
1
1
1
3
1
1
1
3
1
1
3378-21110 Crankcase
01252-30540 Bolt
0292-20510 Washer
3120-13510 Plug
3310-81230 • Lever
1480-81420 • Plug
3350-81380 • Spring
2630-81330 • Screw
2670-81410 • Spring
2609-81370 • Shaft
2880-81470 • Screw
3356-81340 • Valve
1148-81390 • Ring
1491-81160 • Spring
2609-81170 • Needle
3080-81320 • Spring
2609-81330 • Needle
3310-81351 • Screw
2813-81460 • Shaft
2670-81450 • Valve
3350-81220 • Ball
3130-13520 Gasket
3340-41113 Piston
3340-41211 Ring
3304-41310 Pin
3310-41320 Ring (Circlip)
1650-41510 Washer
3310-41410 Bearing
3378-42000 Crankshaft comp.
06030-06201 Bearing
1650-21220 Seal
04065-03212 Ring
2169-21210 Seal
1260-43240 Key
1140-43231 Nut
0290-20820 Washer
01641-20812 Washer
2609-51110 Hub
3350-81350 • Spring
T2100-06020 • Gasket kit
0260-10540 Screw
3544-11510 Bolt
3378-85111 Mount
1145-43290 Washer
2609-51411 Bolt
for G380PU
3310-31720 Screw
3378-71110 Module
2609-71210 Rotor
1260-71261 Spacer
1400-72111 Cap
1400-72121 Spring
42 3699-90032-10 Spark plug
43
44
45
3310-72150 Bolt
2609-81000 Carburetor assy (WT338)
3306-81380 • Screen
7
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8. Warranty
● Scope of Application
This warranty applies only to the engines and parts manufactured by ZENOAH and sold
directly or through distributors.
● Limit of Warranty
This warranty shall apply only to trouble resulting from material defects and inferior
assemblies that ZENOAH acknowledges.
● Method and Limit of Compensation
1) Repair or replacement through the distributor, etc.
2) ZENOAH and its distributors shall not provide compensation for incidental loss to
engine purchasers resulting from trouble.
● Term of Warranty
The term of warranty shall be three (3) months from the date of purchase, within one year
from the date of manufacture.
● The warranty shall not cover the following, even if occurring during the term of
warranty:
1) Any faults, failures caused from neglect of this OWNER'S MANUAL for proper
operation and maintenance.
2) Dismantled or modified engines and parts.
3) Expendable parts.
4) Trouble resulting from submersion in water, from fire or from other natural disasters
and calamities.
5) Engines installed with parts that are not genuine.
Head Office : 1-9 Minamidai, Kawagoe-city, Saitama, 350-1165 Japan
Phone: (+81)49-243-1115 Fax: (+81)49-243-7197
Printed in Japan
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