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Understanding Jet Ski Supercharger Maintenance and Rebuild: The PWCParts.com Guide If you ride a modern supercharged Sea-Doo, Yamaha SVHO, or Kawasaki Ultra, the single most important piece of hardware behind your hole-shot is bolted to the top of the engine: the supercharger. It cranks intake pressure well beyond atmospheric, stuffing more air into the cylinders so your PWC can make 230, 260, or …