Subaru Robin Power Products R600 manual 7-2ENGINE

7-2 ENGINE

7-2-l CYLINDER and CRANKCASE

The cylinder and the crankcase of the engine are of an one-piece aluminum die-cast design. The cast iron cylinder liner is cast-fitted inside the cylinder. Both the intake and exhaust ports are positioned at the lateral side of the cylinder and these ports are formed by using a mold with die-cast cores. The crankcase has its joint face located on the generator side.

7-2-2 MAIN BEARING COVER

The main bearing cover is aluminum die-cast and is mounted on the generator side. By removing the main bearing cover. the interior of the engine can be inspected.

7-2-3 CRANKSHAFT

The crankshaft is constructed of forged carbon steel. The crankpin is induction-hardened and has a pressure-fitted crank gear located on the generator side of the engine.

7-2-4 CONNECTING ROD and PISTON

The connecting rod is constructed of forged aluminum alloy with both the major and minor ends utilized as bearings. The oil scraper and cap for the major end are cast together. The aluminum alloy casting piston has two compression rings and one oil ring.

7-2-5 CAMSHAFT

The camshaft is constructed of special cast iron and has intake and exhaust valve drive cams. each of which engageswith the cam gear. An exclusive aluminum alloy is used on each end of the camshaft in the place of bearings.

7-2-6 VALVE ARRANGEMENT

The intake valve is installed at the oil port side and the exhaust valve at the generator side.

7-2-7 CYLINDER HEAD

The cylinder head is die-cast aluminum and has Ricardo type combustion chamber featuring greater volume capacity for improved combustion efficiency. For easier spark plug maintenance. the cylinder head is positioned at an angle to allow greater access.

7-2-8 GOVERNOR

The centrifugal weight type governor ensures constant engine speed, regardless of load fluctuations (the governor is mecha- nically linked to the governor drive gear).

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