2003 Kawasaki KLF250 Service Manual., Page 272Get this manual
16-30 ELECTRICAL SYSTEM Ignition System
Crankshaft Sensor Peak Voltage Inspection NOTE
Remove the spark plug cap, but do not remove the spark plug Disconnect: Sensor Wire Connector [A] Crankshaft Set the hand tester [B] to the 10 DC range Connect the peak voltage adapter [C] to the hand tester and crankshaft sensor leads in the connectorSpecial ToolHand Tester: 57001-1394 Recommended ToolPeak Voltage Adapter Type: KEK-54-9-B Brand: KOWA SEIKI Connections:
Crankshaft Sensor Connector Adapter Hand Tester
Be sure the battery is fully charged