Bombardier SeaDoo 1998 factory shop manual, Page 93Get this manual
Section 04 ENGINE Subsection 05 (TOP END)
Read the measurement on the cylinder bore gaugeThe result is the exact pistoncylinder wall clearanceNOTE: Make sure the cylinder bore gauge indicator is set exactly at the same position as with the micrometer, otherwise the reading will be false
RingPiston Groove Clearance
717 and 787 Engines Using feeler gauge, check clearance between rectangular ring and grooveIf clearance exceeds specified tolerance, replace pistonNOTE: Ringpiston groove clearance can be correctly measured only on rectangular ring which is bottom ring
F00B09A
1Use the micrometer to set the cylinder bore gauge 2Dial bore gauge