1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 388Get this manual
DF40DF50 "K1" (01) model 13-52 Check for continuity between the commutator and the armature coreshaftReplace armature if continuity is indicatedCheck for continuity between the adjacent commutator segmentsReplace armature if no continuity is indicated09930-99320Digital tester Tester rangeBRUSHES (Continuity)
Armature core
Commutator Shaft
Check the length of each brush09900-20101Vernier calipers Brush length: Standard17.0 mm (0.67 in) Service limit10.0 mm (0.39 in) If brushes are worn down to the service limit, they must be replacedBRUSH HOLDER Check brush holder continuity09930-99320Digital tester Tester rangeBrush holder continuity(Continuity) +