2003 Kawasaki KLF250 Service Manual., Page 281Get this manual
ELECTRICAL SYSTEM 16-39 Electric Starter System
Connect the hand tester [A] and 12 battery [B] to the starter circuit relay [C] as shownIf the relay does not work as specified, the relay is defectiveReplace the relayTesting Relay Hand Tester Range: Criteria: When battery is connected When battery is disconnected Relay Coil Terminals [1] and [2] Relay Switch Terminals [3] and [4]