Yamaha F100B F100C Outboards Factory Service Manual, Page 119Get this manual

Yamaha F100B F100C Outboards Factory Service Manual, Page 119

Quality of the image is intentionally reduced!

Cylinder head Checking the valve springs
Valve spring tilt limit b: 2.6 mm (0.1 in)

Checking the valves
NOTE: Be sure to keep the valves, springs, and other parts in the order