2008 Yamaha WaveRunner FX SHO / FX Cruiser SHO Service Manual, Page 172Get this manual
Oil cooler, oil pump assembly, and drive gear
Oil cooler assembly check
CAUTION:
The oil cooler assembly should not be disassembled1Check: Oil cooler assembly Cracksdamage Replace the oil cooler assembly Oil cooler holding pressure Cannot be maintained Replace the oil cooler assembly