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Reciprocating engine. Four Cylinders. Normally aspirated — The air intake is not boosted with devices such as turbo or super chargers. Direct drive — No gear reduction box is used.
Direct connection from the crank shaft to the prop. Air cooled Engine has cooling fins on it but no liquid cooling — no radiator Horizontally opposed cylinders. Engine accessories devices driven by the engine : 2 vacuum pumps — supply suction to both heading and attitude indicators. Alternator 2 magnetos — powers two separate ignition systems.. Engine instruments Oil pressure indicator The pressure in a pressure line from the upper front of the engine case is translated to an electrical signal displayed on the oil pressure gauge.
Minimum pressure lower red line : 20 PSI. Normal operating range green arc : 50 — 90 PSI. Maximum pressure: upper red line PSI. Oil temperature indicator Resistance type probe located in the accessory case of the engine. An electrical signal from the probe is translated to a temperature reading. Low oil pressure annunciator — illuminates when oil pressure drops below 20 PSI. Activated by an automatic pressure switch located on the rear of the engine accessory case.
Mechanically driven by the engine. Includes an hour meter. Normal operation range green arc : — RPM. Multiple widths of the green arc indicate recommended power settings at sea level, 5, feet and 10, feet respectively. Engine Lubrication system Oil lubricates the internal engine parts reducing metal to metal friction.
Assists in cooling of the internal engine parts. Oil dipstick is located at the right rear of the engine. Oil quantity in sump: quarts on the dipstick. Approved oil types: Aviation grade straight mineral oil: first 50 hours break-in of a new engine.
Does not include detergent additives. Aviation grade Ashless Dispersant oil: must be used after first 50 hours. This oil includes detergents that help clean the engine. SAE oil grade depends on outside temperature. Refer to POH.
The engine will not run without oil! Check oil level at least 5 qt. During flight, check the engine gauges periodically, a low oil pressure and high oil temperature combination indicates that you have a problem; the engine will not run for much long. Refer to emergency procedures section in POH.
Residual oil returns to the sump by gravity flow.
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