2009 Yamaha F40 Outboard Service Manual, Page 28Get this manual
Fuel system technical dataPower unit technical data
Cylinder head assembly
Item Valve Clearance Intake Exhaust Seat contact width Margin thickness Intake Exhaust Cylinder head Warpage limit Valve spring Free length Tilt Valve stem Diameter Intake Exhaust Runout Valve guide Inside diameter Stem-to-guide clearance Intake Exhaust Position Rocker arm Inside diameter Rocker arm shaft Outside diameter Cam shaft Cam lobe height Intake Exhaust Cam lobe width Runout Journal diameter #1 Journal diameter #2, #3 Cylinder head journal inside diameter Unit Model
F40HEHA F40HEA F40HA
mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in) mm (in)