1998-2004 Yamaha WaveRunner XL700 XL760 XL1200 Factory Service Manual, Page 92Get this manual
'''''''''''''''''''''' _ '''''' SERVICE POINTS Cylinder inspection 1Eliminate: Carbon deposits Use rounded scraper CD
2Inspect: Cylinder water jacket Mineral depositsCorrosion Clean Cylinder inner surface Score marks Repair or replaceUse #600800 grit wet sandpaper
3Measure: Cylinder bore "D" Use cylinder gaugeOut of limit ReplaceNOTE:Measure the cylinder bore "D" in parallelThen, find the average of the measurement