• Model: Rotax 122
  • Manufactured by: Aprilia
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Aprilia 125 Rotax Type 122 Engine: A Detailed Exploration

Introduction The Aprilia 125 Rotax Type 122 engine is a single-cylinder, two-stroke powerplant that was first introduced in 1997. It is a compact and lightweight engine, weighing in at just 27.6 pounds, and produces a maximum output of 15 horsepower at 8,500 rpm. The engine is air-cooled and features a reed valve intake system. Design Features The Aprilia 125 Rotax Type 122 engine is designed with several key features that contribute to its performance and reliability. These features include:
  • Cylinder Bore and Stroke: The engine has a bore of 54 mm and a stroke of 54.5 mm, which gives it a displacement of 124.8 cc.
  • Reed Valve Intake System: The reed valve intake system helps to improve the engine's volumetric efficiency and power output. The reed valves open and close depending on the pressure difference between the carburetor and the crankcase, allowing the engine to draw in more air and fuel.
  • Air-Cooled: The engine is air-cooled, which means that it relies on the flow of air over the cylinder head and barrel to dissipate heat. This cooling system is simple and effective, and it helps to keep the engine running at a consistent temperature.
  • Electronic Ignition: The engine is equipped with an electronic ignition system, which provides a more precise and reliable spark than a traditional points-and-condenser ignition system. This helps to improve the engine's starting and running performance.
  • Six-Speed Transmission: The engine is mated to a six-speed transmission, which provides a wide range of gear ratios for different riding conditions. The transmission is smooth and precise, and it helps the engine to deliver its power efficiently.
Performance The Aprilia 125 Rotax Type 122 engine is a powerful and reliable performer. It produces a maximum output of 15 horsepower at 8,500 rpm, and it has a peak torque of 10.5 lb-ft at 7,500 rpm. The engine is responsive and provides good acceleration, and it is capable of reaching a top speed of over 70 mph. Applications The Aprilia 125 Rotax Type 122 engine is used in a variety of applications, including:
  • Motorcycles: The engine is used in a number of Aprilia motorcycles, including the RS 125 and the Tuono 125.
  • Karts: The engine is also used in a number of karting applications.
  • Industrial Applications: The engine is also used in a variety of industrial applications, such as generators and pumps.
Conclusion The Aprilia 125 Rotax Type 122 engine is a compact, lightweight, and powerful performer. It is a reliable and versatile engine that is used in a variety of applications.

This is a complete repair manual for Aprilia 125 Rotax Type 122 Engine.

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FORMAT: PDF
LANGUAGE: English
Downloadable: YES
COMPATIBLE: All Versions of Windows & Mac
Requirements: Adobe PDF Reader.

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