2004-2005 Kawasaki STX-15F Jet Ski Factory Service Manual., Page 98Get this manual
3-50 FUEL SYSTEM (DFI) Fuel Injectors (Service CodeCharacter-41, 42, 43, 44InJ1, InJ2, InJ3, InJ4)
Injector Voltage Inspection
i Turnnntehcet iagniitgotn lsvwilttcmeOeFrF[.A] to the connector [B], with ia Co needle dapterosett the a
Special ToolNeedle Adapter Set: 57001-1457 Injector Power Source Voltage to,(+ Meter () Battery () Terminal
u is Terrnththesitgnitbounttow.itch ON and push the lanyard key und op Pushing the start button, run the engine seconds at idling to measure the injector power source voltage
Wait 15 seconds before using the starter againPower Source Voltage at Injector Connector Standard: Battery Voltage