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2-1.
General Engine Description
O-200-D and X model engines are four-cylinder, four-stroke reciprocating aircraft
engines, designed for fixed pitch, ground adjustable, or electric constant speed propellers.
Cylinder displacement of 200 cubic inches is achieved with a 4.06 inch bore and a 3.88
inch stroke. O-200 series engines are equipped with carburetors and an updraft induction
system.
The engines are designed with a wet sump, positive displacement oil pump installed in the
accessory case. When properly maintained, under normal operating conditions, the desired
oil pressure is maintained by a pressure relief valve located in the accessory case. Engine
cranking is accomplished by a geared starter mounted on the accessory case.
A gear driven alternator is installed on the accessory case. The engine is equipped with
two gear-driven magnetos. The downdraft exhaust system is supplied by the
manufacturer.
O-200 series engines have six bolt propeller flanges.
O-200-D & X Series Engine Installation and Operation Manual
3 January 2017
Chapter 2. Engine Description
Figure 2-1. Engine Features - Typical
Engine Description
2-1
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