2005 Kawasaki STx-12F Jet Ski Factory Service Manual., Page 155Get this manual
4-20 ENGINE LUBRICATION SYSTEM Oil Pump Sprocket, Oil Pump and Oil Pressure Relief Valve
Oil Pressure Relief Valve Inspection
eo ROmPve: (see Oil Pan Removal) il an Relief Valve [A]
o eiCheitcikn twitshea wfotheevnalovreo[tAerslsidetsrosd, ootdhlsyewhfeitncpusesing od of an ei om back to ts seat by spring [B] force
Inspect the valve in its assembled state