2004-2005 Kawasaki STX-15F Jet Ski Factory Service Manual., Page 385Get this manual
STORAGE 15-3 Preparation for torage
o Sys Rleemnvteethfe efuelupupmspc(rsee t[he] (Fsueeel FuetleSyscthaptier)PeC lp een em riodic Maintenance chapter)e ll RalfiU.tSe).fuel tank with fresh fuel approximately 10 (2.6 Turn the ignition switch on Push the lanyard key under the stop button, and start the engine and run it in 15 second periods until all fuel in the fuel system is with fresh fuelWait minutes between 15 seconds running periods
CAUTION
Do not run the engine without cooling water supply for more than 15 seconds at time or severe engine and exhaust system damage will occurul Ponl shweitlcahnyafr.d key off the stop button and turn the igniti of Drain the fuel tank Leave the fuel filler cap loose to prevent condensation in the ank