2006-2010 Suzuki DF150 / DF175 4-Stroke Outboards Service Manual, Page 142Get this manual
ENGINE ELECTRICAL
60 ampmain fuse line 1Disconnect battery cables from battery2Disconnect output lead wire connector from rectifierregulator
3Inspect continuity between the red output lead wire of rectifierregulator and "B" terminal of starter motor magnetic switch4If no continuity is indicated, replace fuse andor main harness
1Starter motor magnetic switch "B" terminal