Micro
Don’t let the size of the Subaru Micro series fool you. These engines may be small but they pack a punch. Introduced as the lightest, most compact engine in its class, advanced Subaru technology gives the Micro series high torque and horsepower output for its small size. Featuring three models with horsepower ratings of 1.1 and 1.6, the Micros have a quick throttle response and wide rpm range, meeting the requirements of demanding applications.
Standard Features:
- Powder metal inserted cam gear
- High-carbon steel crankshaft
- Connecting rod with needle bearing inserts
- Hi-temp fluoride oil seal
- Patented oil lubrication system
- Aluminum alloy blocks with cast iron cylinder liner
- Electronic ignition with automatic timing adjustment
- Dual ball bearing supported crankshaft
- Automatic decompression system
- Splash type lubrication
| Models
Download Brochure
Parts Manual
Service Manual
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Overhead Cam Consumer Engines
The Subaru SP Series overhead cam engines lead the industry in technology offering more power, less noise and easy, one pull starting every time. Introduced as the first air-cooled engine series to use advanced chain-driven overhead cam technology, the Subaru SP Series provides maximum efficiency, performance and power with minimal noise and emissions. The engine design is extremely compatible and easy to install, and simply exchanges with most existing slant cylinder engines.
Standard Features:
- Premium Consumer Engine
- EX17 Design Based
- Standard Foam Air Cleaner
- Chain Driven Overhead Cam Design
- 3/4 in key shaft
- Easy Start Recoil Design
- EPA & CARB III Certified for 49 States
- One Year Limited Warranty
- Available Options: 50 State Certified Engine/Dual Element Air Cleaner
| Models
Download Brochure
Parts Manual
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Overhead Cam
With six models ranging from 4.5- to 14-horsepower, the Subaru overhead cam engines lead the industry in technology offering more power, less noise and easy, one pull starting every time. Introduced as the first air-cooled engine line to use advanced chain-driven overhead cam technology, the Subaru EX Series provides maximum efficiency, performance and power with minimal noise and emissions. The engine design is extremely compatible and easy to install, and simply exchanges with most existing slant cylinder engines.
Standard Features:
- Pent Roof Combustion Chamber
- Low Operating Temperature
- 3-year Manufacturer’s Warranty
- Aluminum alloy blocks with cast iron cylinder liner
- Electronic ignition with automatic timing adjustment
- Dual ball bearing supported crankshaft
- Automatic decompression system
- Splash type lubrication
- Fewer moving valve train parts than OHV designs
- Patent-pending 360-degree airflow cooling design
- Heavy-duty piston rings
- Case-hardened steel timing chain
| Models
- EX13
- EX17
- EX21
- EX27
- EX30
- EX35
- EX40
Download Brochure
Parts Manual
EX40 Parts Manual
Service Manual
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Overhead Valve Vertical Cylinder
With a horsepower range of 6.0-11.0 and four models in the family, these air-cooled engines offer great performance at an affordable price, making them suitable for homeowners, recreational user and light-duty professional users. The engines’ compact, lightweight design remains balanced with heavy-duty features that provide for enhanced durability.
Standard Features:
- 3 year limited manufacturer's warranty
- Aluminum alloy blocks with cast-iron cylinder liner
- Electronic ignition with automatic timing adjustment
- Dual ball bearing supported crankshaft
- Automatic decompression system
- Splash type lubrication
| Models
EH12-2 Parts Manual
EH17-2 Parts Manual
EH25-2 Parts Manual
EH12,17,25 Service Manual
EH30,34 Parts Manual
EH30,34 Service Manual
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Overhead Valve Slant Cylinder
Designed for high performance in medium to heavy-duty applications, these engines provide exceptional reliability for professional use. With horsepower ratings of 11.5 and 13.5, the EH36 and EH41 work well in a wide range of applications and offer high performance, easy starts and maximum durability.
Standard Features:
- Cast iron cylinder liner
- HotSpark® electronic ignition with automatic timing adjustment
- Dual ball bearing supported crankshaft
- Automatic decompression system
- Splash-type lubrication
- Aluminum alloy block
- Quiet, low-tone muffler
- Forged steel crankshaft
- Unique balancer system
| Models
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Parts Manual
Service Manual
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V-Twin Standard
Featuring six models ranging from 18 to 25 horsepower, the V-Twin cylinder series engines are the workhorses of the Subaru engine line. This engine series provides maximum versatility offering models with horizontal or vertical PTO shafts, allowing engines to be used for an even greater variety of industrial and construction equipment. Compared to conventional side-valve engines, Subaru’s V-Twin provides smooth, reliable torque throughout the rpm range, improved breathing room at high rpm and low fuel consumption.
Standard Features:
- Aluminum Alloy Block with Cast Iron Cylinder Liner
- Electronic Ignition System
- Heavy-duty ball bearing support
- Three year limited manufacturer’s warranty
- Full pressure lubrication system with trochoid-type oil pump
- Large capacity air cleaner and dual elements
- Forged steel crankshaft
- Electronic low-oil pressure system
| Models
- EH63
- EH63V
- EH64
- EH65
- EH65V
- EH72
Download Brochure
Parts Manual
Service Manual
Accessory Catalog
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V-Twin Electronic Fuel Injection
A high performance v-twin model that is only 4mm higher than the current 25hp.The new EH72 FI offers easy and surefire start-up performance as well as excellent running performance. The EFI engines run on a open-loop system, which utilizes an electronic control unit (ECU)
Standard Features:
- High Power Output
- Low Fuel Consumption
- No Choke Operation
- Easy Start at Cold Temperatures
- Excellent Response and Acceleration
- Automatic High Altitude Adjustment
- Low Emission (Meets EPA & CARB Tier3)
- Same Envelope Size as Carbureted Engine
- Large Ball Bearing on PTO Side
- Large Dual Element Air Cleaner
- Full Flow Spin On Oil Filter
- 12V Heavy Duty Electric Starter
- Cast Iron Cylinder Liners
- Hot Spark Electronic Ignition
| Models
Download Brochure
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V-Twin LP/NG
Subaru EH72 25hp LP/NG is a keyed shaft v-twin engine optimized to run on vapor withdrawal LP or natural gas. This engine is EPA and CARB certified for both stationary or portable applications.
Standard Features:
- Optimized for LPG/NG Gaseous Fuels
- Quick Changeover from LP to Natural Gas Fuel
- Hardened Valve System
- Auto Choke
- 30 Amp Charging System
- Throttle Body Fuel System
- Fuel Regulator and Electronic Ignition System
- Cast Iron Cylinder Sleeves
- Large Ball Bearing on PTO side
- Large Dual Element Air Cleaners
- Full Pressure Lubrication
- Full Flow Spin-On Oil Filter
- 12V Heavy Duty Electric Starter
- Key Switch with Low Oil Pressure Shut-off and Light
- EPA and CARB Tier 3 Emission Standards Certified 2009 for both Stationary and Portable Applications
- 3 Year Limited Warranty
| Models
Download Brochure
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Overhead Valve for Rammer
Designed with specific rammer engineering requirements, these engines feature overhead valve (OHV) upright cylinder technology to provide continuous rated power for demanding rammer applications. Rammer engines are easy starting and lightweight, yet built for high power, high stress and high performance.
Standard Features:
- Aluminum alloy blocks with cast iron cylinder liner
- Lightweight design
- Vibration proof breather mechanism
- Reinforced casting parts
- Heavy-duty casting with cross bracing
- Vertical cylinder design
- Electronic ignition with automatic timing adjustment
- Dual ball bearing supported crankshaft
- Automatic decompression system
- Splash type lubrication
| Models
EHO9 Parts Manual
EH12-2 Rammer Parts Manual
EH09-12 Service Manual
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