2006-2010 Suzuki DF150 / DF175 4-Stroke Outboards Service Manual, Page 159Get this manual
ENGINE ELECTRICAL
Check for continuity between adjacent commutator segmentsReplace armature if no continuity is indicated! 09930-99320: Digital testerTester range:(Continuity)
BRUSHES Check the length of each brush! 09900-20101: Vernier calipers Brush length: Standard: 16.0 mm (0.63 in) Service limit: 12.0 mm (0.47 in) If brushes are worn down to the service limit, they must be replaced