Cylinder
Piston Ring
Feeler Gauge
ENGINE DISASSEMBLY / ASSEMBLY
4.392004 Four Stroke PWC Service Manual
Engine Inspection Procedures
Piston Inspection
Measure piston pin boss inside diameter.
S Out of specification: Replace piston
Measure piston pin outside diameter.
S Out of specification: Replace piston pin
Confirm piston--to--cylinder clearance specification.
S Out of specification: Replace piston pin
Measure installed ring end gap.
S Out of specification: Replace rings or
cylinder block