Yamaha Outboard F15A F9.9C, FT9.9D F15 Service Manual, Page 260Get this manual
CRANKCASE AND CRANKSHAFT
Piston-to-cylinder clearance 1Calculate: Piston-to-cylinder clearance Out of specification Replace the piston and piston rings, the cylinder or bothPiston-tocylinder clearance
Cylinder bore
Piston diameter