Subaru Robin EH63, EH64, EH65, EH72 Engine Service Repair Workshop Manual
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SERVICE
MANUAL
EH63, 64, 65 and EH72
ENGINES
Models
PUB-ES2158
Rev. 08/09
© Copyright 2009 Robin America, Inc.
Robin America, Inc.
905 Telser Road • Lake Zurich, IL 60047 • Phone: 847-540-7300 • Fax: 847-438-5012
e-mail: sales@robinamerica.com • www.subarupower.com
CONTENTS
Section Title Page
1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2. PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3. FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4. GENERAL DESCRIPTION OF ENGINE COMPONENTS . . . . . . . . . . . . . . . . . . . 8
5. DISASSEMBLY AND REASSEMBLY
5-1 PREPARATIONS AND SUGGESTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5-2 SPECIAL TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5-3 DISASSEMBLY PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5-4 REASSEMBLY PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5-5 BREAK-IN OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6. LUBRICATION SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7. FUEL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
8. ELECTRIC SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
9. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
10. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
11. SERVICE DATA
11-1 STANDARD DIMENSIONS AND SERVICE LIMITS . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
11-2 TIGHTENING TORQUE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
12. MAINTENANCE AND STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
– 1 –
1. SPECIFICATIONS
EH63D MODEL
Type Air-Cooled, 4-Stroke, V-Twin Cylinder, Horizontal P.T.O. shaft, OHV Gasoline Engine
Bore x stroke mm (in.)
mm (in.)
L (U.S. gal.)
V - A
kg (lb.)
Counterclockwise as viewed from P.T.O. shaft side
Displacement cm
3
(cu. in.)
Compression Ratio
Continuous Output kW (HP) / r.p.m.
2 - 80 x 65 (3.15 x 2.56) 2 - 84 x 65 (3.31 x 2.56)
653 (39.9) 720 (43.9)
8.3
EH64D EH65D EH72D
10.8 (14.5) / 3600 11.9 (16.0) / 3600 12.7 (17.0) / 3600 13.4 (18.0) / 3600
Maximum Output
Direction of Rotation
Forced Air Cooling Cooling System
Overhead Valve (OHV) Valve Arrangements
Full pressure type (Trochoid Pump) Full pressure type
with oil Cooler
Lubrication
Automotive Engine Oil SAE #20, #30 or 10W-30; Class SE or higher Lubricant
1.55 (0.41) Capacity of Lubricant
Down Draft, Float Type Down Draft, Float Type
(With Accel Pump)
Carburetor
Automotive Unleaded Gasoline Fuel
Diaphragm Pump (Pulse type) Fuel Feed System
Flywheel Magneto (Solid State) Ignition System
NGK-BP6ES Spark Plug
Charging Capacity
Electric Starter Starting System
Centrifugal Flyweight Type Governor System
Double Element Type Air Cleaner
46 (101.3) 44 (97.0)
12 - 15 (STD)
12 - 30 (Option)
Dry Weight
317 x 477 x 475 (12.5 x 18.8 x 18.7) Overall Length×Width×Height
*
Specifications are subject to change without notice.
kW (HP) / r.p.m. 13.4 (18.0) / 3600 15.3 (20.5) / 3600 16.4 (22.0) / 3600 18.6 (25.0) / 3600
Maximum Torque N•m / r.p.m.
(kgf•m / r.p.m.)
(ft•lb. / r.p.m.)
43.3 / 2000
(4.41 / 2000)
(31.90 / 2000)
44.3 / 2200
(4.52 / 2200)
(32.69 / 2200)
45.6 / 2500
(4.65 / 2500)
(33.63 / 2500)
53.6 / 2500
(5.5 / 2500)
(39.78 / 2500)
– 2 –
2. PERFORMANCE
2-1 MAXIMUM OUTPUT
The maximum output is the output of an engine with its throttle valve fully opened under the condition that all
the moving parts are properly worn in after the initial break-in period.
A new engine may not produce full maximum output while its moving parts are still not broken-in.
NOTE :
Power curves shown in the following charts are made in conformity to SAE internal combustion engine
standard test code J1349
2-2 CONTINUOUS RATED OUTPUT
The continuous rated output is the output of an engine at optimum governed speed which is most favorable
from the view point of engine's life and fuel consumption.
When the engine is installed on a certain equipment, it is recommended that the continuous output required
from the engine be kept below this continuous rated output.
2-3 MAXIMUM TORQUE
The maximum torque is the torque at the output shaft when the engine is producing maximum output at
certain revolution.
– 3 –
2-4 PERFORMANCE CURVES
EH63D
2000 2400 2800 3200 3600
5
(
6.7
)
10
(
13.4
)
15
(
20.1
)
REVOLUTION r.p.m
HORSEPOWER
kW
(
HP
)
TORQUE
N-m
(
kgf-m
)
45
(
4.59
)
35
(
3.57
)
CONTINUOUS
RATED HP
RECOMMENDED
HORSEPOWER RANGE
MAXIMUM TORQUE
MAXIMUM HORSEPOWER
– 4 –
EH64D
2000 2400 2800 3200 3600
5
(
6.7
)
10
(
13.4
)
15
(
20.1
)
REVOLUTION r.p.m
HORSEPOWER
kW
(
HP
)
TORQUE
N-m
(
kgf-m
)
45
(
4.59
)
35
(
3.57
)
CONTINUOUS
RATED HP
RECOMMENDED
HORSEPOWER RANGE
MAXIMUM TORQUE
MAXIMUM HORSEPOWER
– 5 –
EH65D
2000 2400 2800 3200 3600
5
(
6.7
)
10
(
13.4
)
15
(
20.1
)
REVOLUTION r.p.m
HORSEPOWER
kW
(
HP
)
TORQUE
N-m
(
kgf-m
)
45
(
4.59
)
35
(
3.57
)
CONTINUOUS
RATED HP
RECOMMENDED
HORSEPOWER RANGE
MAXIMUM TORQUE
MAXIMUM HORSEPOWER
– 6 –
EH72D
2000 2400 2800 3200 3600
10
(13.4)
5
(
6.7
)
15
(20.1)
20
(
26.8
)
REVOLUTION r.p.m
HORSEPOWER
kW
(
HP
)
TORQUE
N-m
(
kgf-m
)
55
(
5.61
)
45
(
4.59
)
CONTINUOUS
RATED HP
RECOMMENDED
HORSEPOWER RANGE
MAXIMUM TORQUE
MAXIMUM HORSEPOWER
– 7 –
3. FEATURES
Highly rigid structure
●
High-carbon steel, forged crank shaft
●
Light-weight , tough alminum forged connectiong rod
●
Ball-bearing
●
Special cast iron cylinder liner
Long-lasting structure
●
Forced pressure lubrication of crankshaft by directly connected trochoid pump
●
Standard equipped oil cooler ensures a good lubrication environment
●
Ball bearing installed in the throttle bearing of the carbureter
Reliability
●
Unusually high dust proofing by a double compartment air cleaner and inner vent type carbureter
●
Carbureter equipped with acceleration pump, and receives excellent throttle response.
● A fine distribution suction pipe and effective combustion chamber shape provide greater cubustion
stability and reduced gas emissions
Compact
●
Center height 133.3mm and 25HP
●
90° V2 cylinder built in crankcase
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Print one or all pages of your manual
$31.99
$41.99
This is a complete factory service repair workshop manual for the Subaru Robin EH63, EH64, EH65, EH72 Engine. The manual has easy-to-read text sections with top quality diagrams and instructions, making it useful for both the do-it-yourselfer and the experienced mechanic. It provides step-by-step instructions and highly detailed exploded pictures and diagrams to show you how to complete the required job correctly and efficiently.
Models Covered:
- Air-Cooled, 4-Stroke, V-Twin Cylinder, Horizontal P.T.O. shaft, OHV Gasoline Engine
- Subaru Robin EH63 Engine
- Subaru Robin EH64 Engine
- Subaru Robin EH65 Engine
- Subaru Robin EH72 Engine
Service Repair Manual Covers:
- SPECIFICATIONS
- PERFORMANCE
- FEATURES
- GENERAL DESCRIPTION OF ENGINE COMPONENTS
- DISASSEMBLY AND REASSEMBLY
- LUBRICATION SYSTEM
- FUEL SYSTEM
- ELECTRIC SYSTEM
- TROUBLESHOOTING
- INSTALLATION
- SERVICE DATA
- MAINTENANCE AND STORING
- And More......
File Format: .PDF
Compatibility: All Versions of Windows & Mac
Language: English
Requirements: Adobe Reader & WinZip
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