CONTENTS
Section Title Page
1 . SPECIFICATIONS ....................................................................................................... 1
2 . PERFORMANCE ........................................................................................................ 3
2-1 MAXIMUM OUTPUT ........................................................................................................ 3
2-2 CONTINUOUS RATED OUTPUT .................................................................................... 3
2-3 MAXIMUM TORQUE ....................................................................................................... 3
2-4 PERFORMANCE CURVES ............................................................................................. 4
3 . FEATURES .................................................................................................................. 6
4 . GENERAL DESCRIPTION OF ENGINE COMPONENTS .......................................... 7
4-1 CYLINDER AND CRANKCASE ....................................................................................... 7
4-2 MAIN BEARING COVER ................................................................................................. 7
4-3 CRANKSHAFT .................................................................................................................. 7
4-4 CONNECTING ROD AND PISTON ................................................................................. 8
4-5 PISTON RINGS ............................................................................................................... 8
4-6 CAMSHAFT ..................................................................................................................... 8
4-7 VALVE ARRANGEMENT ................................................................................................. 9
4-8 CYLINDER HEAD ............................................................................................................ 9
4-9 GOVERNOR SYSTEM .................................................................................................... 9
4-10 COOLING SYSTEM ..................................................................................................... 10
4-11 LUBRICATION SYSTEM .............................................................................................. 10
4-12 IGNITION SYSTEM ..................................................................................................... 10
4-13 CARBURETOR ............................................................................................................. 11
4-14 AIR CLEANER .............................................................................................................. 11
4-1 5 BALANCER ................................................................................................................... 11
4-16 DECOMPRESSION SYSTEM ..................................................................................... 12
4-17 SECTIONAL VIEW OF ENGINE .................................................................................. 13
5 . DISASSEMBLY AND REASSEMBLY ....................................................................... 15
5-1 PREPARATIONS AND SUGGESTIONS ........................................................................ 15
5-2 SPECIALTOOLS ........................................................................................................... 15
5-3 DISASSEMBLY PROCEDURES .................................................................................... 16
5-4 REASSEMBLY PROCEDURES ..................................................................................... 31
5-5 BREAK-IN OPERATION ................................................................................................ 43
6 . MAGNETO ................................................................................................................ 43
6-1 OPERATION AND FUNCTION ...................................................................................... 43
6-2 BASIC THEORY ............................................................................................................ 43
6-3 WIRING DIAGRAM ........................................................................................................ 45
Section Title Page
7 . AUTOMATIC DECOMPRESSION SYSTEM ............................................................ 46
8 . CARBURETOR ........................................................................................................ 47
8-1 OPERATION AND CONSTRUCTION ............................................................................ 47
8-2 DISASSEMBLY AND REASSEMBLY ............................................................................. 48
9 . STARTING SYSTEM ................................................................................................ 50
9-1 RECOIL STARTER ........................................................................................................ 50
9-2 ELECTRIC STARTER .................................................................................................... 54
10 . TROUBLESHOOTING ........................................................................................... 56
10-1 STARTING DIFFICULTIES .......................................................................................... 56
10-2 ENGINE MISFIRE ........................................................................................................ 57
10-3 ENGINE STOPS .......................................................................................................... 57
10-4 ENGINE OVERHEAT ................................................................................................... 58
10-5 ENGINE KNOCKS ....................................................................................................... 58
10-6 ENGINE BACKFIRES THROUGH CARBURETOR ..................................................... 58
11 . INSTALLATION ..................................................................................................... 59
11-1 INSTALLING ................................................................................................................. 59
11-2 VENTILATION .............................................................................................................. 59
11 -3 EXHAUST GAS DISCHARGE ..................................................................................... 59
11 -4 POWER TRANSMISSION TO DRIVEN MACHINES ................................................... 59
12 . SERVICE DATA ....................................................................................................... 60
12-1 CLEARANCE DATAAND LIMITS ................................................................................ 60
12-2 TORQUE SPECIFICATIONS ....................................................................................... 66
12-3 OIL GRADE CHART .................................................................................................... 66
13 . MAINTENANCE AND STORAGE .......................................................................... 67
13-1 DAILY MAINTENANCE ................................................................................................ 67
13-2 INITIAL 20 HRS . MAINTENANCE ............................................................................... 67
13-3 EVERY 50 HRS . (10 DAYS) MAINTENANCE ............................................................. 67
13-4 EVERY 100-200 HRS . (MONTHLY) MAINTENANCE ................................................. 68
13-5 EVERY 500-600 HRS . MAINTENANCE ...................................................................... 68
13-6 EVERY 100 HRS . (YEARLY) MAINTENANCE ............................................................ 68
13-7 ENGINE STORAGE ........................................... : ......................................................... 68
I EH36 1
MODEL
~~~ ~ ~
EH36B EH36DS EH36D EH36BS
I I I
Type
Air-Cooled, 4-Cycle, Single-Cylinder,
Horizontal P.T.O. Shaft, OHV Gasoline Engine
Bore x Stroke
8.3 Compression Ratio
404 cm3 (24.65 cu.in.) Piston Displacement
89 x 65 mm (3.50 x 2.56 in.)
Continuous 6.3 kW (8.5 HP) /3600 r.p.m. 6.3 kW HP) /I800 r.p.m.
output
Max. 8.5 kW (1 1.5 HP) /3600 r.p.m. 8.5 kW (1 1.5 HP) /1800 r.p.m.
~
Max. Torque
54.9 N - m (5.60 kgf - m)
/1250 r.p.m.
27.4 N - m (2.80 kgf m)
/2500 r.p.m.
I
Direction of Rotation 1 Counterclockwise As Viewed From P.T.O. Shaft Side I
____~
Cooling system
Valve Arrangement
Forced Air Cooling
Automobile Oil SAE #20, #30 or 1OW-30 ; Class SE or higher Lubricant
Splash Type Lubrication
Overhead Valve
~_____
Capacity of Lubricant 1.2 liters (0.32 U.S. gal.)
Carburetor I Horizontal Draft, Float Type
Fuel
Fuel Tank Capacity
Gravity Type Fuel Feed System
31 0 g/kW - h (230 g/HP - h) At Continuous Rated Output Fuel Consum
Automobile Unleaded Gasoline
7.0 liters (1.85 U.S. gal.)
Ignition em I Flywheel Magneto (Solid State) I
Spark Plug NGK BP6ES
Charging Capacity
-
-
1/2 Camshaft Drive Speed Reduction
Starting System
12V-1.3A
-
1 2V- 1.3A
Governor System Centrifugal Flyweight Type
Air Cleaner Double Element Type
Recoil Starter
& Recoil Stafler & Recoil Starter
Recoil Starter
Electric Starter Electric Starter
Dry Weight I 32.0 kg (70.6 Ib.) I 35.0 kg (77:2 Ib.) I 31 .O kg (68.4 Ib.) I 34.0 kg (75.0 Ib.)]
~_____
Dimensions (L x W x H) 389 mm x 431 mm x 433 mm (15.31 in. x 16.97 in. x 17.05 in.)
I
Specifications are subject to change without notice.
- 1-
EH41 I
MODEL
EH41 B EH41 DS EH41 D EH41BS
Air-Cooled, 4-Cycle, Single-Cylinder,
Horizontal P.T.O. Shaft, OHV Gasoline Engine
I Bore x Stroke 89 x 65 mm (3.50 x 2.56 in.)
btonbisplacement 404 cm3 (24.65 cu.in.)
1
Empression Ratio
~~
8.3 I
Continuous 7.0 kW (9.5 HP) 13600 r.p.m. 7.0 kW (9.5 HP) /1800 r.p.m.
Output
Max. 9.9 kW (13.5 HP) /3600 r.p.m. 9.9 kW (13.5 HP) /1800 r.p.m.
,
Max. Torque
56.8 N m (5.80 kgf - m)
I
28.4 N - m (2.90 kgf m)
/1250 r.p.m. /2500 r.p.m.
Direction of Rotation
Cooling system
Counterclockwise As Viewed From P.T.O. Shaft Side
Splash Type Lubrication
Overhead Valve Valve Arrangement
Forced Air Cooling
(Lubricant
I Automobile Oil SAE #20, #30 or low-30 ; Class SE or higher I
Capacity of Lubricant
310 g/kW - h (230 g/HP - h) At Continuous Rated Output Fuel Consumption Ratio
Automobile Unleaded Gasoline Fuel
Horizontal Draft, Float Type Carburetor
1.2 liters (0.32 U.S. gal.)
I Fuel Feed System
T~- Gravity Type
1 7.0 liters (1.85 US. gal.)
Ignition System
Spark Plug
Flywheel Magneto (Solid State)
12V-1.3A 12V-1
-
Charging Capacity
NGK BPGES
Starting System
Speed Reduction 1/2 Camshaft Drive
-
Governor System Centrifugal Flyweight Type
Air Cleaner Double Element Type
Electric Starter
& Recoil Starter
Recoil Starter
& Recoil Starter
Recoil Starter
Electric Starter
Dry Weight
Dimensions (L x W x H) 389 mm x 431 mm x 433 mm (1 5.31 in. x 16.97 in. x 17.05 in.)
~ ~~
32.0 kg (70.6 Ib.) 34.0 kg (75.0 Ib.) 31.0 kg (68.4 Ib.) 35.0 kg (77.2 Ib.)
Specifications are subject to change without notice.
- 2-
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Subaru Robin EH36, EH41 Engine Service Repair + Parts Manual
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Description
This is a comprehensive factory service repair and parts manual for the Subaru Robin EH36 and EH41 Engine. The manual features easy-to-read text sections with high-quality diagrams and instructions, making it suitable for both do-it-yourself enthusiasts and experienced mechanics. It includes step-by-step instructions and detailed exploded pictures and diagrams to effectively and efficiently complete the required job.
Model Covers:
- Air-Cooled, 4-Cycle, Single-Cylinder
- Horizontal P.T.O. Shaft
- OHV Gasoline Engine
Subaru Robin EH36 Engine: EH36B, EH36BS, EH36D, EH36DS
Subaru Robin EH41 Engine: EH41B, EH41BS, EH41D, EH41DS
Service Repair Manual Covers:
- SPECIFICATIONS
- PERFORMANCE
- FEATURES
- GENERAL DESCRIPTION OF ENGINE COMPONENTS
- DISASSEMBLY AND REASSEMBLY
- MAGNETO
- AUTOMATIC DECOMPRESSION SYSTEM
- FLOAT TYPE CARBURETOR (EH09D)
- FLOAT TYPE CARBURETOR (EH12-2D)
- DIAPHRAGM TYPE CARBURETOR (OPTION)
- STARTING SYSTEM
- TROUBLESHOOTING
- INSTALLATION
- SERVICE DATA
- MAINTENANCE AND STORAGE
- PARTS MANUAL
- And More......
File Format: .PDF
Compatibility: All Versions of Windows & Mac
Language: English
Requirements: Adobe Reader & WinZip
This Subaru Robin EH36 and EH41 Engine Service Repair + Parts Manual is readily accessible without any waiting time, and all pages are printable. It is a cost-effective solution that saves money on postage and packaging, making it an essential resource to have.
