1992-1998 Kawasaki PWC Jet Ski Service Repair Manual., Page 135Get this manual
Lubrication
A two-cycle engine is lubricated by mixing oil with the fuelTherefore, various lubricated as the fuel mixture passes through the crankcase and the cylinderOn the 300 and the 650 engines, oil injection delivers oil the intake manifoldOn the 440 Series and 550 Series engines, oil is mixed with the gasoline in the fuel tank in the old manner
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