Suzuki 2002-2005 DF4/DF5/DF6 4-Stroke Outboards Service Manual, Page 75Get this manual
6-8 POWER UNIT 4Remove the gasket, the dowel pins and the push rods from the cylinder block
5Remove the valve adjusting lock nuts 1, then remove the pivot nuts and the rocker arms 3
6Using the special tools, remove the valve cotters while compressing the valve spring09916-14510Valve lifter 09916-14910Attachment 09916-84511Tweezers