This engine comes with a 3 year Residential and 1 year Commercial Use Warranty
Heavy-duty piston rings coupled with a cast-iron cylinder liner resist wear and ensure a long engine life.
Chain-driven Overhead Cam design offers superior power and performance
with an automatic decompression system to reduce the required pulling
force by 30 to 40 percent, and ensure starting on the first pull.
Forged high-carbon steel crankshaft provides maximum reliability under demanding loads, thus providing longer engine life.
The drop forging process increases the strength and durability of the
crankshaft by re-aligning the molecules in the steel. This process
hardens the complete crankshaft. Most engines use cast-iron steel
Hardened steel rocker arms with precision tappet adjusters are used for greater durability and reduce service requirements.
The illustration shows the straight intake port on the right side of
the picture. The lower resistance to the flow of the air/fuel mixture
improves the power, efficiency and lowers emissions. Overhead Cam (OHC)
technology allows the intake and exhaust valves to be positioned for
Overhead Cam (OHC) technology and the Pent-Roof combustion chamber
allow the Subaru EA175 vertical shaft engine to use a higher compression ratio of 9:1.
The higher compression ratio increases the power produced for a given
size engine. It also improves efficiency and overall performance.
The camshaft and the sprocket are made of special sintered alloy and
constructed as a single piece. The camshaft is provided with a separate lobe for the intake and exhaust valve . The decompression release lever is
mounted on the sprocket end side.
Ball bearing crankshaft support offers maximum stability under demanding loads.