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General| Displacement | 1211 cc |
|---|---|
| Bore x Stroke | 79.5 mm x 61 mm |
| Compression Ratio | 9.0:1 |
| TBO (Time Between Overhaul) | 2000 hours |
| Engine Type | 4-cylinder, 4-stroke |
| Power Output | 80 hp |
| Cooling System | Liquid/air-cooled |
| Fuel Type | Avgas 100LL or unleaded automotive gasoline |
| Oil Capacity | 3 liters |
| Fuel System | 2 carburetors |
| Oil System | Dry sump forced lubrication with separate oil tank |
| Reduction Gear Ratio | 2.43:1 |
| Max Continuous Power | 75 hp (56 kW) |
Outlines the manual's purpose: familiarize owners with basic operating instructions and safety information.
Explains the importance of the engine serial number for identification, parts ordering, and modifications.
Defines symbols (Warning, Caution, Note) used throughout the manual to highlight critical information.
Provides crucial safety advice for flight operations, engine limitations, pilot qualifications, and maintenance.
Lists essential ROTAX technical documents and manuals for continued airworthiness and maintenance.
Details the engine's type designation, including configuration, certification, and propeller shaft types.
Illustrates and labels the engine's cylinders from lateral and top views for identification.
Presents key engine dimensions like bore, stroke, displacement, and compression ratio for different models.
Lists dry weights for various engine configurations (2/4, 3) and optional equipment like alternators.
Provides fuel consumption data in liters per hour for take-off and continuous performance settings.
Specifies the propeller shaft rotation direction when viewed from the power take-off side.
Explains the closed-circuit liquid cooling system for cylinder heads and ram-air cooling for cylinders.
Illustrates the fuel flow path from the tank to carburetors, including filters and fuel pump.
Describes the dry sump lubrication system, including oil pump, oil filter, and oil tank.
Details the engine's dual ignition system, generator, and charging coils for ignition circuits.
Covers propeller gearbox reduction ratios and the integrated overload clutch functionality.
Lists gear ratios for hydraulic governors or vacuum pumps driven via the propeller reduction gear.
Specifies operating speeds, performance limits, and conditions for engine types 912 UL/A/F and 912 ULS/S.
Details specifications and recommendations for coolants, fuels, and lubricants used with the engine.
Provides step-by-step instructions for daily checks, pre-flight procedures, engine start, and take-off.
Outlines procedures and warnings for handling unusual engine behavior and emergencies during flight.
Provides recommendations for protecting valve guides against corrosion during periods of non-operation.
Explains the procedure for reporting engine malfunctions or occurrences to the manufacturer via a form.
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