2005 Kawasaki STx-12F Jet Ski Factory Service Manual., Page 112Get this manual
3-64 FUEL SYSTEM (DFI) Throttle Lever, Cable and Case
ia bl Desmssvemthee cthrelitp r[ot]t,leflcaswashers [B], pin [C], throttle ic at leverD] and return spring [E] rom he case [F]
Throttle Case AssemblyInstallation
shownInstall the control lever to the case