2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 96Get this manual

2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 96

Quality of the image is intentionally reduced!

Cylinder head

b Previous contact width

Neway valve seat kit: YB-91044 2 Cut the surface of the valve seat with 45 cutter by turning the cutter clockwise until the valve seat