4-stroke 3 person jet-ski Yamaha WaveRunner
2009 VX

The VX™ is powered by a Yamaha MR-1™ four-stroke engine. This is a compact, ultra-lightweight, four-cylinder, 1052cc, DOHC, 20-valve, liquid-cooled engine for class-leading performance.
Electronic Fuel Injection (EFI): Delivers a smooth, high power output with low fuel consumption and low exhaust emissions.
Specially Designed, One-piece Cylinder and Crankcase Assembly: Provides tremendous engine rigidity that's lighter and stiffer than two-piece designs.
Slant Detection Switch: Electronic switch stops engine and oil pumps immediately if watercraft becomes overturned, protecting motor from water ingestion.
Dry Sump Lubrication: Uses two engine oil pumps to deliver lubricated oil to each moving part with water-jacketed sump and oil backflow protection.
Thermostatic and Pressure Controlled Cooling System: Water flow through the engine is controlled by a thermostat and pressure system and is maintained by a pressure control valve.

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