1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 215Get this manual
7-5 MID UNIT Mount Check upper and lower mountIf excessive wear, corrosion, or other damage is found, replace mount
Water tube Check water tubeIf clog or obstruction is found, clean water tubeIf cracks, corrosion or other damage is found, replace water tubeCheck water tube grommetIf excessive wear or other damage is found, replace grommet