2004-2006 Kawasaki 900 STX Jet Ski Service Manual, Page 89Get this manual
ENGINE TOP END 6-9 Engine Top End
gasket on the cylinder head Place new cylinder headgasket must face upward and The "UP" mark [A] of the arrow mark [B] must face forward
Install the cylinder headTemporarily tighten the cylinder head nuts [A] and tighten
them with specified torque in accordance with the sequence numbersThe tightening sequence numbers are marked on the cylinder headInitial Torque for Temporal Tightening Cylinder Head Nuts: 7.8 Nm (0.80 kgfm, 69 inlb) TorqueCylinder Head Nuts: 29 Nm (3.0 kgfm, 22 ftlb)
Start the engine to check for fuel and oil leaks, exhaust leaks, and excessive vibrationWARNING