2009 Yamaha F40 Outboard Service Manual, Page 29Get this manual
Specification Model
F40HEHA F40HEA F40HA
Crankcase assembly
Item Piston Diameter Measuring point Oversize diameter 1st 2nd Piston clearance Ring groove (Top) Ring groove (2nd) Ring groove (Oil) Pin boss inside diameter Pin outside diameter Cylinder Bore Piston ring End gap measuring point Top ring Type Dimension height (B) Dimension width (T) End gap (1) Side clearance 2nd ring Type Dimension height (B) Dimension width (T) End gap (1) Side clearance Oil ring Dimension height (B) Dimension width (T) End gap (1) Side clearance Connecting rod Small end inside diameter Big end inside diameter Big end side clearance Crankpin oil clearance Crankshaft Journal diameter Crankpin diameter Crankpin width Runout Unit mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in)