1993 Johnson Evinrude "ET" 60 degrees LV Service Manual, P/N 508286, Page 242Get this manual
Cleaning and Inspection 1,4l 1Inspect the brushes; replace if damaged, cracked, or one-half wornReplace brush springs, if weak2Clean the commutator with 300-grade emery clothIf commutator surface is unevenly worn or pitted, turn it on latheRemove any trace of oil or metal dust from commutator G5l r:J6l 3
Check the armature on growler for shorted turnsCheck for grounding by using test light or meterInspect armature insulation for indications of overheating or damaged windingsClean off any carbon deposits or foreign matter which may contribute to later windings failure