1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 167Get this manual
POWER UNIT 6-24
DISASSEMBLY
1Remove tappets with shims
2Using valve lifter and attachment, remove valve cotters while compressing valve spring09916-14510Valve lifter 09916-14910Attachment 09916-84511Tweezers