Suzuki DF25/DF30 Four Stroke Service Manual, Page 74Get this manual
4-4 ELECTRICAL FUSE CASEFUSE 09930-99320Digital tester Tester range(Continuity)
Fuse 1Remove the fuse from fuse case2Inspect fuse and replace with new 25-amp fuse if needed
Fuse case 1Disconnect all wires of fuse case2Check continuity between WhiteRed lead wire with plate terminal and the other two lead wiresTester range(Continuity)
If no continuity is indicated, replace fuse case
RECTIFIERREGULATOR
09900-25002Pocket tester Tester range1k (Resistance) 1Disconnect all lead wires of rectifierregulator2Measure resistance between leads in the combinations shown