2004-2005 Kawasaki STX-15F Jet Ski Factory Service Manual., Page 179Get this manual
6-8 ENGINE TOP END Special Tools and Sealant
C-2 Valve Seat Cutter, 45 57001-1116 5:
Valve Spring Compressor Assembly: -2 1
Valve Seat Cutter, 32 57001-1120
Top Dead Center Finder: -4 2