Subaru Robin Power Products EX27 User Manual
ENGINES
full line
Overhead Cam
OHV Slant
OHV V-Twin
Rammer
Micro
Engines
Engines
Engines
Engines
Engines
A Solid Investment.
One of the largest engine manufacturers in the world, Subaru Robin produces more than
1.2 million engines annually for every type of market. With industry-leading technology and
Lasting Value.
Excellent Engines
With more than 40 years of superior
operation and quality that’s second to none,
Subaru engines have earned a worldwide
reputation for top-notch performance and
unbeatable reliability. When you buy Subaru
engines, you can count on excellent
value every time.
top-quality components, our engines power everything from rammers, welders and trowels
to generators, pressure washers and fun karts – and everything in between. With a two-year
warranty and an expansive parts and service network, our support after the sale is second to
none. In fact, it’s the most comprehensive, powerful engine package on the market.
• With less recoil pulling force, an electronic ignition system and automatic
decompression, you can rely on easy starting every time.
• High power and torque, extended running time and high compression ratios
ensure premium performance in a broad range of applications.
• Designed with cast-iron cylinder liners, a high-carbon steel crankshaft supported
by steel ball bearings and an electronic low-oil shut-off, Subaru engines are
built to last.
• The strength of the Subaru network remains long after the sale with more than
4,500 Subaru dealers in North America and the support of a two-year limited warranty.
• Subaru engines meet or exceed all current EPA and California emission standards.
OVERHEAD CAM
BENEFITS
Combining advanced technology
with experienced craftsmanship, Subaru Robin’s
EX Series engines are leading the industry.
With four models ranging from 4.5- to 9-horsepower, these engines are superior to competitors in the same class. After all,
it’s the first air-cooled engine line to use advanced chain-driven overhead cam (OHC) technology to ensure more power, less
noise and easy, one-pull starting every time.
ADVANCED TECHNOLOGY
Subaru Robin’s EX Series engines take technology to the extreme. Using chain-driven
overhead cam (OHC) technology, these workhorses provide maximum efficiency,
performance and power, along with minimal noise and emissions.
Extremely easy starting with no kick-back:
• An automatic decompression system offers easier starting, reducing the required pulling force
by 30 to 40 percent.
• EX engines start instantly even at temperatures as cold as -10 C without any
perceptible kick-back.
More power means superior performance:
• Pent roof combustion chamber allows for a high compression ratio of up to 9:1.
EX13
Competitor
0 1 2 3 4 5 6 7 8 (kW)
Less noise:
• 33 percent fewer moving valve train parts than OHV designs and reduced mechanical
noise ensures noise levels a full 2 dbA below competitive models.
EX17
Competitor
EX21
Competitor
Max Power
EX27
Competitor
LONG LIFE AND EASY MAINTENANCE
These engines take a lot of abuse, which is why they were built with
longevity in mind. A cooler running design and heavy-duty interior parts
ensure maximum uptime. When maintenance is performed, EX Series
engines require no special tools and have high parts commonality
between models.
FACTORY OPTIONS
Charging System up to 200 watts*
•
Electronic Low Oil Shut-Off System
•
Key, Tapered or Threaded Shafts
•
Manual or Cable Remote Throttle Control
•
Solenoid-Actuated Idle Control
•
Manual or Remote Control Choke
•
Multiple Air Cleaner Options
•
• The patent-pending cooling design features a slanted cylinder
and 360-degree airflow around both the exhaust and intake
valve stem areas.
• Heavy-duty piston rings and a cast-iron cylinder liner resist
wear and ensure a long engine life.
• A case-hardened steel timing chain allows for precision timing
and maximum durability.
Low-profile Air Cleaner
Accommodates a
compact design for
generator applications.
#1 - Industry leading chain-driven
overhead cam offers superior
power and performance.
#2 - Optimized-capacity
rigid muffler for noise
KEY FEATURES
1 Chain-driven overhead cam
2
2 Optimized-capacity rigid muffler
4
6
3
1
5
3 Dual ball bearing crankshaft support
4 Pent roof combustion chamber
reduction 2 decibels below
competitor models.
#3 - Dual ball bearing crankshaft
support offers maximum stability
under demanding loads.
Extra-large, Extremely Quiet Muffler
Offers exceptional
noise reduction.
Electric Start*
For quick, convenient
and easy starting.
Cyclone Pre-cleaner
Ensures engine
protection even in high
dust environments.
*for 6 hp and above
5 Case-hardened steel timing chain
6 Lubrication holes for the critical
rod journal
#4 - Pent roof combustion
chamber enables optimum intake
and exhaust valve placement for
maximum engine performance
and efficiency.
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