Suzuki DF25/DF30 Four Stroke Service Manual, Page 82Get this manual
4-12 ELECTRICAL STARTER MOTOR RELAY Two methods can be used to test starter motor relay09930-99320Digital tester Method 1Disconnect all cableslead wires from starter motor relay2Measure resistance between relay wiring leadsTester range(Resistance) B YG
Tester probe connection RedYellowGreen Black Black
Starter motor relay solenoid coil resistance3.5 5.1 If measurement exceeds specification, replace starter motor relayMethod Connect the wiring leads of the relay to battery (12V) and check relay operationTester range(Continuity)