2004-2006 Kawasaki 900 STX Jet Ski Service Manual, Page 207Get this manual
ELECTRICAL SYSTEM 14-41 Sensors
Unscrew the cap [A], and pull out the speed sensor connector [B] with the grommet [C] Disconnect the speed sensor connectors (see Wiring Diagram)
Connect the battery and tester leads to the sensor as shownSpecial ToolHand Tester: 57001-1394
hand slowly Rotate the waterwheel by 25 DC range, measure the Set the hand tester to output voltage of speed sensorGR (+), BKW () 10 V; twice rotation (Rotate it slowly