Zenoah Automobile Parts G380PU User Manual

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.  
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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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