Robin America EH63, Руководство по обслуживанию

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4. GENERAL DESCRIPTION OF ENGINE COMPONENTS
ROBIN EH63D/64D/65D/72D engine is air-cooled, 4-stroke, twin-cylinder, OHV arrangement gasoline engine.
The twin-cylinder is located in the angle of 90 degree; #1 cylinder is in the RH side and #2 cylinder in LH side
as viewed from flywheel (cooling fan) side.
4-1 CYLINDER AND CRANKCASE
The twin-cylinder and crankcase is single piece
aluminum die-casting.
The cylinder liner, made of special cast iron, is
molded into the aluminum casting.
The crankcase has a mounting surface on the output
shaft side, where the main bearing cover is attached.
4-2 MAIN BEARING COVER
The main bearing cover is an aluminum die-casting,
which is mounted on the output shaft side of the
crankcase.
Pilots and bosses are machined on the cover for
direct mounting of the engine onto such machines as
generators and pumps.
It is easy to inspect inside of the engine, after
removing the main bearing cover.
4-3 CRANKSHAFT
The crankshaft is forged carbon steel, and the crank
pin is induction-hardened.
The output end of the shaft has a crankshaft gear
pressed into position.
Engine oil passages are provided onto the journal
and pin portions of crankshaft for lubrication.