2003-2004 GP1300R WaveRunner Service Manual, Page 123Get this manual
CYLINDERS
SERVICE POINTS
Cylinder inspection 1Eliminate: Carbon deposits (using rounded scraper 1)
2Check: Cylinder water jacket Corrosionmineral deposits Clean or replace Cylinder inner surface Score marks Replace
3Measure: Cylinder bore "D" (using cylinder gauge) Out of specification Replace cylinder and piston as setNOTE: Measure the cylinder bore parallel to and at right angle to the crankshaftThen, average the measurements