1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 127Get this manual
5-3 FUEL SYSTEM
FUEL LINE
REMOVALINSTALLATION
Pay special attention to the following steps when removing or installing fuel hoses
The components after the high pressure fuel pump remain pressurized at all timesTo protect against fuel spray, relieve fuel line pressure before disconnecting or removing components