2005 Kawasaki STx-12F Jet Ski Factory Service Manual., Page 175Get this manual
ENGINE TOP END 6-7 Specif ications
Item Width: Exhaust Inlet Valve Spring Free Length: Exhaust (Inner) (O(I(OCylinder, Piston Cylinder Inside Diameter Piston Diameter PistonCylinder Clearance Piston RingGroove Clearance: Top Second Piston Ring Groove Width: Top Second Piston Ring Thickness: Top Second Piston Ring End Gap: Top Second
Valve Head Thickness
Standard 0.8 1.2 mm (0.03 0.047 in 0.5 1.0 mm (0.02 0.039 in 38.08 45.97 37.97 45.78 mm mm mm mm (1.499 (1.810 (1.495 (1.802 in in in in
Service Limit 36.7 44.3 36.5 44.2 mm mm mm mm (1 (1 (1 (1 in in in in