Suzuki DF25/DF30 Four Stroke Service Manual, Page 61Get this manual
3-10 ENGINE CONTROL CKP SENSOR 09930-89240pin connector test cord Peak voltmeter Stevens CD-77 Tester rangeSEN 50 1Disconnect CKP sensor lead wire connector from CDI unit2Connect the test cord as shown3Connect tester probe to sensor lead wires as shownCKP sensor No.1 No.2 Tester probe connection Red (+) Red RedWhite Black () Black WhiteBlack
4Remove all spark plugs5Crank with recoil starter or starter motor, then measure voltageCKP sensor output Red Black RedWhite WhiteBlack or over or over