2005 Kawasaki STx-12F Jet Ski Factory Service Manual., Page 194Get this manual
6-26 ENGINE TOP END Valves
Valve Seat Inspection
tae l) Remcokvte ehveavvaelvseeastiee VurlvacReA]obveatw.een the valve [B] Che ngand valve eat [C]
Measure the outside diameter [D] of the seating pattern
on the valve seatIf the outside diameter is too large or too small, repair the seat (see Valve Seat Repair)Valve Seating Surface Outside Diameter ta.6in nl et .6in
Measure the seat width [E] of the portion where there is