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General| Engine Type | 2-cylinder, 2-stroke |
|---|---|
| Displacement | 503 cc |
| Bore | 72 mm |
| Compression Ratio | 6.5:1 |
| Stroke | 61 mm |
| Maximum Power | 50 hp |
| Ignition | DCDI |
| Weight (dry) | 32 kg |
| Fuel Type | Avgas |
| Lubrication System | Pre-mix |
| Oil Type | 2-stroke oil |
Manual purpose, safety information, and reference to other documentation.
How to identify and use the engine serial number for inquiries and orders.
Explanation of symbols like WARNING, CAUTION, and NOTE used in the manual.
Critical safety warnings, usage conditions, and operational responsibilities.
Information sources, manual references, and notes on illustration details.
Technical specifications for the 447 UL SCDI and 503 UL DCDI engines.
Technical specifications for the 582 UL DCDI and 582 UL DCDI mod. 99 engines.
Explanation of the type designation composition for different ROTAX engines.
Illustrations showing PTO and lateral views of the 447 UL SCDI engine.
Illustrations showing PTO and lateral views of the 503 UL DCDI engine.
Illustrations showing PTO and lateral views of the 582 UL DCDI engine.
Provides bore, stroke, and displacement data for engine models.
Lists dry weights of engines and components in kilograms and pounds.
Details fuel consumption rates at take-off and continuous performance.
Specifies the propeller shaft rotation direction when viewed from the PTO side.
Explains air cooling for 447/503 UL SCDI engines.
Details the liquid cooling system for the 582 UL DCDI engine.
Details the liquid cooling system for the 582 UL DCDI mod. 99 engine.
Describes fuel-oil mixture and oil injection systems for engines.
Details mixture lubrication, oil injection, and gearbox lubrication.
Explains lubrication for the rotary valve drive and gearbox.
Explains ignition units and generators for 447 and 503/582 UL DCDI engines.
Lists available gear ratios for Type B, C, and E gearboxes.
Covers engine speed, take-off performance, oil capacity, temperatures, and pressure.
Shows engine performance, torque, and fuel consumption curves for 447 UL SCDI.
Shows engine performance, torque, and fuel consumption curves for 503 UL DCDI.
Shows engine performance, torque, and fuel consumption curves for 582 UL DCDI.
Shows engine performance, torque, and fuel consumption curves for 582 UL DCDI models.
Covers coolant, fuel types, mixing procedures, and lubricants.
Mixing ratio of antifreeze/water and coolant specifications.
Lists approved fuels and cautions for fuel usage.
Step-by-step guide for mixing fuel and oil.
Details engine, gearbox, and rotary valve drive lubricants.
Guidelines for pre-operation checks and ensuring readiness.
Essential checks to perform daily before engine operation.
Details pre-flight inspection procedures for the engine.
Instructions and warnings for starting the engine.
Covers warming up and throttle response tests before flight.
Instructions for checking the ignition system before operation.
Guidance on engine operation during flight.
Discusses dangers and precautions related to water exposure.
Information on noise reduction through silencers and mufflers.
Discusses challenges and considerations for winter operation.
Explains types of carburetor icing and remedies.
Procedure for engine stoppage while airborne.
Actions for exceeding engine speed, temperature, and fuel pressure limits.
Procedures for protecting the engine during storage periods.
Detailed steps for preserving the engine for over 4 weeks.
Identifies common issues with fuel and spark, and suggests basic checks.
Addresses engine running with ignition off and knocking under load.
Lists authorized distributors in Austria, Germany, UK, Hungary, Italy, Poland, Romania, etc.
Lists authorized distributors in Canada, USA, and South America.
Lists distributors in China, CIS, India, Indonesia, Iran, Israel, Japan, Korea, UAE.
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