Yamaha Outboard F15A F9.9C, FT9.9D F15 Service Manual, Page 92Get this manual
SPEC Item
MAINTENANCE SPECIFICATIONS (FT9.9D)
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) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in)
Seat width (C) Margin thickness (D) Intake Exhaust Stem outside diameter Intake Exhaust Guide inside diameter Stem-to-guide clearance Intake Exhaust Stem runout limit VALVE SPRING Free length Free length limit Tilt limit PISTON Piston-to-cylinder clearance Piston diameter (D) Standard Measuring point (H) Pin boss inside diameter Oversize piston diameter 1st 2nd PISTON PIN Outside diameter PISTON RINGS Top ring Type Dimensions (B T) End gap (installed) Wear limit Side clearance (installed) 2nd ring Type Dimensions (B T) End gap (installed) Wear limit Side clearance (installed)