Suzuki DF200/DF225/DF250 V6 4-Stroke Outboards Service Manual, Page 115Get this manual
ENGINE CONTROL SYSTEM
[Low pressure side] 1Install the emergency stop switch lock plate in position2Turn ignition switch ON and check for fuel pump operating soundFuel pump operating sound: Sounds for approx6 seconds only
1Low pressure fuel pump
FUEL INJECTOR OPERATING SOUND (CRANKING) 1Remove the collector assembly(See page 6-3, 6-6) 2Touch sound scope or long blade screw driver to fuel injector body as shown3Crank engine and check for injector operating soundInjector operating sound: "Click" 4Reinstall the collector assembly(See page 6-5, 6-7