Subaru Subaru EX27 User manual

Full Line
ENGINES

The power of Innovation.
As one of the largest engine manufacturers in the world, Subaru produces more
than 1.2 million engines annually for every type of market. Collectively sharing
technologies from our Automotive, Aerospace and Eco Technologies divisions, our
engines power innovation in every industry we serve. With a five-year warranty and
a parts and service network numbering more than 5,000, our support after the sale
is second to none.
With more than 50 years of superior operation and unmatched quality, Subaru
engines have earned a worldwide reputation for exceptional performance and
unbeatable reliability. A hallmark of the Subaru line, our chain-driven overhead cam
technology sets the bar for the industry.

Reliability. Dependability. Serviceability. Count on it from Subaru.
Subaru’s
Industry Leading Warranty
Subaru does more than lead the industry in technology and innovation.
We lead the way in customer service too. And our warranty policy is no
exception. We were the rst engine manufacturer to offer a ve-year
warranty on our EX and V-Twin engines - and the only to honor it. Enjoy a
guaranteed, hassle-free claim process, where all “ties” go to the customer.
We believe it’s about more than just superior engines – it’s investing in
superior service and peace of mind.

*for 6 hp and above ** select models only
EX Series
Overhead Cam
•
Charging Systems up to 200 Watts*
•
Electronic Low Oil Shut-Off System
•
Key, Tapered or Threaded Shafts
•
Manual and Cable Remote Throttle Control
Accommodates a
compact design for
generator applications.
Low-Profile Air Cleaner
For quick, convenient
and easy starting.
Electric Start*
Ensures engine
protection even in high
dust environments.
Cyclone Pre-Cleaner
Factory Options
Advanced technology. Experienced craftsmanship. Subaru EX engines lead the industry.
Featuring nine models from 4.3 to 14 horsepower, the EX engines offer superior performance
and durability over same-class competitive models.
Subaru engine models available in EPA Phase 3, CARB Tier 3, EU Stage II emission compliant and Canadian ICES regulation compliant congurations.
Rotating Screen
Provides superior
protection from
unwanted debris.
•
Solenoid-Actuated Idle Control**
•
Manual** or Remote Control Choke
•
Multiple Air Cleaner Options

EX13 |EX17 |EX21 |EX27 |EX30 | EX35 |EX40
4.3-14.0 HP
2
4
3
5
1
2
3
4
5
Chain-Driven Overhead Cam
Enables the engine to breathe better and run quieter.
OHC technology, in combination with the hemispherical
combustion chamber, elevates starting ease and
eliminates kickback. Required pulling force is reduced
by 30 to 40 percent with an automatic decompression
system. Engines start instantly – even at temperatures
as cold as -10ºC – without any perceptible kickback.
Optimized Capacity Rigid Muffler
Combined with 33 percent fewer moving parts, ensures
noise levels a full 2 dbA below competitive models.
Dual Ball-Bearing Crankshaft Support
Ensures maximum stability and durability in the most
demanding conditions.
Hemispherical Combustion Chamber
Provides optimum intake and exhaust valve placement
allowing up to 9:1 compression ratio for superior
performance and efficiency.
Case-Hardened Steel Timing Chain
Allows for precision timing and maximum durability.
Features & Benefits
1

EH Series
Overhead Valve V-Twin
Provides superior
lubrication and long
engine life.
Full-Pressure Lubrication System with Spin -On Oil Filter
•
Multiple Muffler Kits
•
Key Switch with Electronic
Tachometer/Hour Meter
•
15 or 30 Amp Charging Systems
•
LP/NG Fuel System (EH72)
Offers a quick and
accurate read of
power, speed and
service intervals.
Control Box with Electronic Tachometer
Allows close coupling
of hydraulic pumps.
Hydraulic Pump Mount
Ensures engine
protection even in high
dust environments.
Canister Air Cleaner
•
Manual & Remote Cable
Throttle & Choke Controls
•
Oil Drain Extensions
•
Rotating Flywheel Screen
•
Oil Cooler (EH72)
•
Flywheel Stub Shaft
•
Electronic Fuel System (EH72)
Factory Options
Only one word is needed to describe the Subaru V-Twin line: Workhorse. Five models with
horsepower from 20.5 to 28 deliver high power and performance in a small package. With Subaru
technology, rest assured these engines offer maximum durability, easy starts and long life.
Subaru engine models available in EPA Phase 3, CARB Tier 3, EU Stage II emission compliant and Canadian ICES regulation compliant congurations.

Features & Benefits
5
1
2
3
4
5
Cast-Iron Cylinder Liners
Enhance reliability and extend engine life.
High Carbon Steel Crankshaft
Provides maximum reliability.
Large Main Bearing Support on the PTO Side of Crankshaft
Minimizes shock under heavy loads.
Low Oil Pressure Sensor
Alerts operator when oil pressure drops too low.
HotSpark®Electronic Ignition System
Ensures accurate ignition timing to deliver reliable
starting performance, while offering smooth idling and
reduced fuel consumption.
Large-Capacity Air Cleaner with Dual Elements
Protects the engine from harmful dust and debris.
EH64 |EH65 |EH65V |EH72 |EH72 FI
6
6
2
3
4
1
20.5-28.0 HP

EH & ER Series
Rammer
1
2
3
Features & Benefits
Balanced. Durable. Powerful. It all adds up to a rammer engine like no other. Unlike
competitors, Subaru designed its engines from the ground up strictly for rammer
applications. They are carefully balanced and engineered to be lightweight for optimal
performance, yet able to deliver the most power and torque.
Cast-Iron Cylinder Liners
Resist wear and enhance durability for better compression,
more power and prolonged engine life.
Dual Ball-Bearing Crankshaft Support
Reduces friction and increases power delivery to the crankshaft.
Vertical Cylinder Design
Maintains an ideal center of gravity to effectively transmit
power to the ground.
Specific Rammer Design
Ensures a unit that’s balanced, lightweight and powerful for demanding rammer applications.
Low Oil Pressure Sensor (ER12)
Shuts off the engine if oil pressure level drops too low.
4
Subaru engine models available in EPA Phase 3, CARB Tier 3, EU Stage II emission compliant and Canadian ICES regulation compliant congurations.
5
4
1 2
3

Rammer Engine
Rammers present a special engineering challenge. The engine must withstand both the vibration of the compactive force and the high dirt
and dust environment. Additionally, rammer engines require a high degree of specialized design to integrate with the rest of the machine for
maximum performance. The rammer design requires that the entire machine be balanced on the center of the foot in both the front to back
axis and side to side axis.
Because the engine is mounted to the side of the rammer’s leg, the lesser the width (W) of the engine, the less the rammer needs to be
angled (A) forward to balance the machine over the foot. As the rammer angle (A) is increased, the compaction force (F1) that impacts the
ground is reduced and the backward force (F2) increases – propelling the rammer forward and reducing compactive force. To maximize
the compaction force, Subaru rammer engines are designed specifically for rammer applications. All Subaru rammer engines are balanced
close to the mounting face as well as evenly on the side to side axis for optimum compaction performance and easy operation.
W
A
F2
F1
EH09 | ER12
2.8-3.5 HP

•
Electric Start 15-Watt Charging System
•
Key, Tapered Shafts
•
Manual and Cable Remote Throttle Control
•
Multiple Air Cleaner Options
Accommodates a
compact design for
generator applications.
Low-Profile Air Cleaner
For quick, convenient
and easy starting.
Electric Start
Factory Options
Engineered with the exclusive Subaru OHC technology of our maximum durability
engines, the SP Series engines offer maximum value for light commercial and premium
residential equipment.
SP Series
Overhead Cam
Subaru engine models available in EPA Phase 3, CARB Tier 3, EU Stage II emission compliant and Canadian ICES regulation compliant congurations.
Ensures engine
protection even in high
dust environments.
Dual Element Cleaner

2
4
3
5
1
2
3
4
5
Chain-Driven Overhead Cam
Provides easier starting, greater power and reduced
emissions than same-class engines, when compared to
older design technologies.
Optimized Capacity Rigid Muffler
Combined with 33 percent fewer moving parts, reduces
noise levels a full 2 dbA below competitive models.
Dual Ball-Bearing Crankshaft Support
Offers greater power delivery to the crankshaft, while
ensuring maximum stability and durability under even the
most demanding loads.
Hemispherical Combustion Chamber
Allows the engine to utilize a higher compression ratio
and, when combined with OHC technology, produces
more power and torque.
Case-Hardened Steel Timing Chain
Provides precision timing, while ensuring maximum
durability.
Features & Benefits
1
SP-170 |SP-210
5.7-7. 0 H P

More Power. Superior Cooling. Reduced Maintenance. You name it, these engines have
it. What sets Subaru apart? A 100 percent original design – no copycats or knock-offs.
It’s genuine Subaru overhead cam technology. With the Subaru name, you can count on
the performance.
Offers exceptional
noise reduction.
Extra-Large, Extremely Quiet Muffler
•
PTO Designed for Pressure Washers and
Lawn and Garden Equipment
•
Fixed or Cable Remote Throttle Control
•
Electric Start
Features quick and easy
cleaning capabilities for
long life.
Washable, Oil Foam Air Cleaner
Allows easy monitoring
of crucial oil level.
Extended Oil Fill with Dipstick
Protects engine from
harmful dirt and debris.
Pleated Paper Type Air Cleaner
•
Flywheel Brake
•
Manual Choke, Auto Choke and Primer Options
•
Multiple Air Cleaner Options
Factory Options
EA Series
Overhead Cam Vertical Shaft
Subaru engine models available in EPA Phase 3, CARB Tier 3, EU Stage II emission compliant and Canadian ICES regulation compliant congurations.

1
2
4
3
5
6
1
2
3
Hemispherical Combustion Chamber
Enables a high compression ratio, providing more
power than competitive engines while reducing
fuel consumption.
Uniquely Positioned Intake and Exhaust Valves
Lower resistance to the air/fuel ow for added power
and fuel efciency, as well as lower emissions.
Chain-Driven Overhead Cams (Dual Cams)
Allow the engine to breathe better and run quieter.
OHC technology, in combination with the hemispherical
combustion chamber, enhances starting ease and
eliminates kickback.
4
5
6
Heavy-Duty Piston and Cast-Iron Cylinder
Enhance durability.
Steel Timing Chain
Reduces maintenance and noise levels. EA engines
operate a full 2 dBA quieter in exhaust tone than
competitors.
Hardened Steel Rocker Arms (2)
Increase durability and reduce maintenance requirements.
2
Features & Benefits
EA175V |EA190V
4.5 -5.5 HP

Subaru Engines
High Performance
What’s the benefit of Subaru’s advanced mechanical decompression system?
Easy Starting
With 30 to 40 percent less recoil pulling force than competitive
models, Subaru engines provide smooth, easy starts. Sure,
all engines start easily when they’re brand new. Subaru OHC
engines continue to start easily even after thousands of hours
of use.
Pulling Force
EX13
EX27
Competitor
Competitor
0 3 6 9 12 15 (kgf)
Easier to Start
Compression Release
Subaru Robin EX17
EX13
EX17
EX21
EX27
Honda
Honda
Honda
Honda
70 82 (dBA)
High Compression OHC Design
EX13
EX17
EX21
EX27
Competitor
Competitor
Competitor
Competitor
0 1 2 3 4 5 6 7 8 (kW)
Max Power
Overhead cam (OHC) technology and the hemispherical combustion chamber allow the Subaru EX
engines to use a higher compression ratio up to 9:1.
What is the significance of a higher combustion ratio?
More Power
A more powerful engine makes for more powerful and productive equipment.
Increased Efficiency
Lower fuel consumption and efficient performance reduce operating costs.
High Power & Torque

The higher efficiency of the overhead cam (OHC) technology translates to less unused fuel emitted by the engine .
• OHC – Improved combustion characteristics.
• Lower exhaust emissions.
• Reduced fuel consumption.
• Easily meets EPA Phase 3 and CARB Tier 3
emissions standards.
Exhaust Emissions HC = NOx
Subaru EX
Subaru EX
Competitor
Competitor
0 2 4 6 8 10 12 (g/HP-hr)
4 kW Class
6 kW Class
Lower Emissions
EX13
EX17
EX21
EX27
Competitor
Competitor
Competitor
Competitor
70 82 (dbA)
Operating dbA Levels
2 dbA
00 20k
Hz
20
60
dbA 3m
Competitor
Subaru EX17
3000 rpm
Noise/Frequency Measurement
What’s the benefit of 33 percent fewer moving parts?
Reduced Mechanical Noise
Subaru engines are a full 2 dbA quieter than competitive models. The noise reduction is most noticeable in the higher frequency range.
Fewer Parts
With fewer parts to wear and break, Subaru OHC engines outlast the competition.
Quieter Operation

EX13 EX17 EX21 EX27 EX30
Type Chain-Driven OHC Chain-Driven OHC Chain-Driven OHC Chain-Driven OHC Chain-Driven OHC
Bore X Stroke (mm) 58 x 48 67 x 48 67 x 60 75 x 60 75 x 65
Displacement (cc) 126 169 211 265 287
Maximum Output (HP/RPM) 4.3/4000 SAE Test Code J1349 (Net) 5.7/4000 SAE Test Code J1349 (Net) 7.0/4000 SAE Test Code J1349 (Net) 9.0/4000 SAE Test Code J1349 (Net) 9.5/4000 SAE Test Code J1349 (Net)
Lubrication Type Splash with Chain Carry Splash with Chain Carry Splash with Chain Carry Splash with Chain Carry Splash with Chain Carry
Oil Capacity (oz./cc) 20oz./600cc 20oz./600cc 20oz./600cc 34oz./1000cc 34oz./1000cc
Fuel Tank Capacity (qt./L) 2.8 qt./2.7 L 3.8 qt./3.6 L 3.8 qt./3.6 L 6.4 qt./6.1 L N/A
Dimensions (LxWxH) mm 297 x 341 x 318 304 x 354 x 335 311 x 366 x 335" 351 x 420 x 410 415x 424 x 319
Dry Weight (lbs./kg.) 31/14 33/15 35/16 46/21 40/18
Engine
Specifications
EX35 EX40 EH09 ER12 EH65V
Type Chain-Driven OHC Chain-Driven OHC Overhead Valve Belt-Driven OHC Vertical Overhead Valve
Bore X Stroke (mm) 89 x 65 89 x 65 51 x 42 60 x 43 80 x 65
Displacement (cc) 404 404 86 121 653
Maximum Output (HP/RPM) 12/3600 SAE Test Code J1940 (Gross) 14/3600 SAE Test Code J1940 (Gross) 2.8/4200 SAE Test Code J1940 (Gross) 3.5/3600SAE Test Code J1940 (Gross) 22.0/3600 SAE Test Code J1940 (Gross)
Lubrication Type Splash with Chain Carry Splash with Chain Carry Splash Pressure System Pressure System
Oil Capacity (oz./cc) 40.5oz./1200cc 40.5oz./1200cc 10oz./300cc 12oz./350cc 68oz./2000cc
Fuel Tank Capacity (qt./L) 7.4 qt./7 L 7.4 qt./7 L N/A N/A N/A
Dimensions (LxWxH) mm 389 x 450 x 443 389 x 450 x 443 249 x 299 x 380 228 x 286 x 322 475 x 469 x 353
Dry Weight (lbs./kg.) 73/33 73/33 22/10 22/10 93/13
Specifications subject to change without notice. | Always read the owner’s manual before use.

EX13 EX17 EX21 EX27 EX30
Type Chain-Driven OHC Chain-Driven OHC Chain-Driven OHC Chain-Driven OHC Chain-Driven OHC
Bore X Stroke (mm) 58 x 48 67 x 48 67 x 60 75 x 60 75 x 65
Displacement (cc) 126 169 211 265 287
Maximum Output (HP/RPM) 4.3/4000 SAE Test Code J1349 (Net) 5.7/4000 SAE Test Code J1349 (Net) 7.0/4000 SAE Test Code J1349 (Net) 9.0/4000 SAE Test Code J1349 (Net) 9.5/4000 SAE Test Code J1349 (Net)
Lubrication Type Splash with Chain Carry Splash with Chain Carry Splash with Chain Carry Splash with Chain Carry Splash with Chain Carry
Oil Capacity (oz./cc) 20oz./600cc 20oz./600cc 20oz./600cc 34oz./1000cc 34oz./1000cc
Fuel Tank Capacity (qt./L) 2.8 qt./2.7 L 3.8 qt./3.6 L 3.8 qt./3.6 L 6.4 qt./6.1 L N/A
Dimensions (LxWxH) mm 297 x 341 x 318 304 x 354 x 335 311 x 366 x 335" 351 x 420 x 410 415x 424 x 319
Dry Weight (lbs./kg.) 31/14 33/15 35/16 46/21 40/18
EX35 EX40 EH09 ER12 EH65V
Type Chain-Driven OHC Chain-Driven OHC Overhead Valve Belt-Driven OHC Vertical Overhead Valve
Bore X Stroke (mm) 89 x 65 89 x 65 51 x 42 60 x 43 80 x 65
Displacement (cc) 404 404 86 121 653
Maximum Output (HP/RPM) 12/3600 SAE Test Code J1940 (Gross) 14/3600 SAE Test Code J1940 (Gross) 2.8/4200 SAE Test Code J1940 (Gross) 3.5/3600SAE Test Code J1940 (Gross) 22.0/3600 SAE Test Code J1940 (Gross)
Lubrication Type Splash with Chain Carry Splash with Chain Carry Splash Pressure System Pressure System
Oil Capacity (oz./cc) 40.5oz./1200cc 40.5oz./1200cc 10oz./300cc 12oz./350cc 68oz./2000cc
Fuel Tank Capacity (qt./L) 7.4 qt./7 L 7.4 qt./7 L N/A N/A N/A
Dimensions (LxWxH) mm 389 x 450 x 443 389 x 450 x 443 249 x 299 x 380 228 x 286 x 322 475 x 469 x 353
Dry Weight (lbs./kg.) 73/33 73/33 22/10 22/10 93/13

EH64 EH65 EH72 EH72 LP/NG EH72 FI
Type Overhead Valve Overhead Valve Overhead Valve Overhead Valve Overhead Valve
Bore X Stroke (mm) 80 x 65 80 x 65 84 x 65 84 x 65 84 x 65
Displacement (cc) 653 653 720 720 720
Maximum Output (HP/RPM) 20.5/3600 SAE Test Code J1940 (Gross) 22.0/3600 SAE Test Code J1940 (Gross) 25.0/3600 SAE Test Code J1940 (Gross) 25.0/3600 SAE Test Code J1940 (Gross) 28.0/3600 SAE Test Code J1940 (Gross)
Lubrication Type Pressure System Pressure System Pressure System Pressure System Pressure System
Oil Capacity (oz./cc) 52oz./1550cc 52oz./1550cc 52oz./1550cc 52oz./1550cc 52oz./1550cc
Fuel Tank Capacity (qt./L) N/A N/A N/A N/A N/A
Dimensions (LxWxH) mm 317 x 477 x 475 317 x 477 x 475 317 x 477 x 475 317 x 477 x 475 317 x 477 x 475
Dry Weight (lbs./kg.) 97/44 101/46 101/46 101/46 101/46
SP-170 SP-210 EA175V EA190V
Type Chain-Driven OHC Chain-Driven OHC Vertical Chain-Driven OHC Vertical Chain-Driven OHC
Bore X Stroke (mm) 67 x 48 67 x 60 68 x 48 68 x 52
Displacement (cc) 169 211 174 189
Maximum Output (HP/RPM) 5.7/4000 SAE Test Code J1349 (Net) 7.0/4000 SAE Test Code J1349 (Net) 4.5/3600 SAE Test Code J1349 (Net) 5.5/3600 SAE Test Code J1349 (Net)
Lubrication Type Splash with Chain Carry Splash with Chain Carry Splash with Chain Carry Splash with Chain Carry
Oil Capacity (oz./cc) 20oz./600cc 20oz./600cc 20oz./600cc 20oz./600cc
Fuel Tank Capacity (qt./L) 3.8 qt./3.6 L 3.8 qt./3.6 L 1 qt./1 L 1 qt./1 L
Dimensions (LxWxH) mm 304 x 354 x 335 311 x 366 x 335 397 x 360 x 268 425 x 360 x 290
Dry Weight (lbs./kg.) 33/15 35/16 29/13 29/13
Specifications subject to change without notice. | Always read the owner’s manual before use.
Engine
Specifications

EH64 EH65 EH72 EH72 LP/NG EH72 FI
Type Overhead Valve Overhead Valve Overhead Valve Overhead Valve Overhead Valve
Bore X Stroke (mm) 80 x 65 80 x 65 84 x 65 84 x 65 84 x 65
Displacement (cc) 653 653 720 720 720
Maximum Output (HP/RPM) 20.5/3600 SAE Test Code J1940 (Gross) 22.0/3600 SAE Test Code J1940 (Gross) 25.0/3600 SAE Test Code J1940 (Gross) 25.0/3600 SAE Test Code J1940 (Gross) 28.0/3600 SAE Test Code J1940 (Gross)
Lubrication Type Pressure System Pressure System Pressure System Pressure System Pressure System
Oil Capacity (oz./cc) 52oz./1550cc 52oz./1550cc 52oz./1550cc 52oz./1550cc 52oz./1550cc
Fuel Tank Capacity (qt./L) N/A N/A N/A N/A N/A
Dimensions (LxWxH) mm 317 x 477 x 475 317 x 477 x 475 317 x 477 x 475 317 x 477 x 475 317 x 477 x 475
Dry Weight (lbs./kg.) 97/44 101/46 101/46 101/46 101/46
SP-170 SP-210 EA175V EA190V
Type Chain-Driven OHC Chain-Driven OHC Vertical Chain-Driven OHC Vertical Chain-Driven OHC
Bore X Stroke (mm) 67 x 48 67 x 60 68 x 48 68 x 52
Displacement (cc) 169 211 174 189
Maximum Output (HP/RPM) 5.7/4000 SAE Test Code J1349 (Net) 7.0/4000 SAE Test Code J1349 (Net) 4.5/3600 SAE Test Code J1349 (Net) 5.5/3600 SAE Test Code J1349 (Net)
Lubrication Type Splash with Chain Carry Splash with Chain Carry Splash with Chain Carry Splash with Chain Carry
Oil Capacity (oz./cc) 20oz./600cc 20oz./600cc 20oz./600cc 20oz./600cc
Fuel Tank Capacity (qt./L) 3.8 qt./3.6 L 3.8 qt./3.6 L 1 qt./1 L 1 qt./1 L
Dimensions (LxWxH) mm 304 x 354 x 335 311 x 366 x 335 397 x 360 x 268 425 x 360 x 290
Dry Weight (lbs./kg.) 33/15 35/16 29/13 29/13

905 Telser Road
Lake Zurich, IL 60047, USA
tel: [phone] |toll free: 800-277-6246
email: [email protected]
web: www.subarupower.com
PUB-ENGFL rev. 03/2012
History of Innovation
Future of Excellence
Using an engine indoors can kill you in minutes!
Engine exhaust contains carbon monoxide. This is a
poison you cannot see or smell. Never use inside a home
or garage, even if doors and windows are open. Only use
outside and far away from windows, doors and vents.
Subaru is a division of Fuji Heavy Industries Ltd.,
headquartered in Tokyo, Japan. Fuji is a global
manufacturing company of diversified premium
brand products. Total annual sales exceed $17 billion.
There are four main divisions: Subaru Automotive,
Aerospace, Eco Technologies and the Industrial
Products Division. All divisions share a common
history of innovation that brings added value to the
Company’s premium products.
Subaru industrial engines and equipment have
earned a reputation throughout the world for high
performance and durability in the most demanding
applications. Subaru is the fourth largest engine
manufacturer in the world, with annual production
exceeding 1.2 million engines.
Advanced engineering, high technical expertise
and state-of-the-art robotic manufacturing
are hallmarks of Fuji, which proactively shares
technology between divisions in order to stay on
the cutting edge, lead competition and provide
customers with outstanding products.
In recent years, Fuji has earned a worldwide
recognition for technical advances in its Subaru
automobiles, such as Subaru’s All Wheel Drive
(AWD) system, horizontally opposed engines and
the turbo-charged 300 horsepower WRX STI
performance car. Fuji has built its solid reputation
on 60 years of success.
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