1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 88Get this manual
3-33 ENGINE CONTROL SYSTEM
INSPECTION
PRECAUTION ON SYSTEM INSPECTION
To prevent an unexpected engine start, perform the following before proceeding with any CRANKING tests When performing tests not related to fuel injector operationDisconnect all fuel injector wire connectors When performing tests related to fuel injector operationRelieve fuel pressure in line(See page 5-2 Disconnect high pressure fuel pump wire connector located on fuel vapor separator
Always turn ignition switch "OFF" and disconnect battery cables when wires are being disconnected or connected Hold and pull connector pieces when disconnectingDo not pull wires