1996-2006 Yamaha 115-140HP Outboards Service Manuals, Page 77Get this manual
Quality of the image is intentionally reduced!
IPOWR Ia I
Piston-Cylinder clearance Cylinder bore Piston diameter
Piston ring 1 Inspect: Piston ring WornOamaged-Replace2 Measure: Piston ring side clearance Out of specification-R