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1 Powder metal inserted cam gear
2 High-carbon steel crankshaft
with ball bearings on both ends
3 Connecting rod with needle
bearing inserts
4 Hi-temp fluoride oil seal
5 Automatic decompression system
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4
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KEY FEATURES
BENEFITS
2
#3 - Connecting rod with needle
bearing inserts offers true
bearing support to provide
dependable performance in the
toughest applications.
#2 - High-carbon steel crankshaft
with ball bearings on both ends
ensures ultimate reliability
in heavy load applications.
#1 - Powder metal inserted cam
gear ensures extra protection
for added durability and extended
performance life.
#4 - Hi-temp fluoride oil seal
ensures maximum protection.
MICRO 4-CYCLE
Try not to let the
name mislead you.
For as small as the Micro engines are in size, they’re more than huge in power and performance. The lightest and most compact
engine series in its class, Subaru Robin’s Micro engines showcase advanced technology and engine design all in one compact,
efficient unit.
Easy-to-carry Micros are ideal for handheld equipment, such as backpack
blowers, mini-tillers, water pumps and cement screeds, among many other
applications. At just 8 pounds, these quiet, compact engines are easy to
maneuver and maintain. The result is less operator effort and fatigue, which
ultimately means higher productivity.
With high torque and horsepower output, these state-of-the-art compact
engines provide a lot of bang for the buck. The Micros feature quick
throttle response and a wide rpm range with low vibration. The unique
lubrication system with a separate oil chamber ensures smooth and
stable running throughout a full range of operating positions.
• Introduced as the lightest and most compact 4-cycle engine
in its class.
• The unique lubrication system, with a separate oil chamber,
guarantees a smooth, stable-running engine throughout a wide
range of operating positions.
• The Micro 4-cycle OHV design combined with an automatic
decompression system provides an easy pull and reliable starting.
• Quick throttle response and wide rpm range meet the
requirements of demanding applications.
• Compared to a 2-cycle engine, the Micro 4-cycle OHV design
emits one-tenth the emissions and uses half as much fuel.
• Heavy-duty crankcase design with hard chromium plate cylinder
and forged steel rocker arm ensures maximum reliability.
ULTRA LIGHT AND WELL BALANCED
POWERFUL AND RESPONSIVE
LUBRICATION SYSTEM
The Subaru Micro engines are designed to run in a wide range of positions.
The patented oil lubrication system is elegant in its engineering simplicity.
The natural pressure changes in the crankcase caused by the piston
movement in the cylinder are harnessed to pump the oil throughout the
engine. Oil is pumped from a reservoir in the base of the engine through
a network of one-way valves for reliable lubrication and long engine life
without the need to keep the engine level.
Oil Separator
Check Ball
Oil Tank
Cam Gear Chamber
Rocker Chamber
Blow–by (Oil Mist) Flow
Oil Flow