1999 "EE" 90, 115 FFI, 150, 175 V4, V6 FFI Outboards Service Manual, P/N 787024, Page 138Get this manual
Cleaning and Inspection]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[][3Check the armature on growler for shorted turnsCheck for grounding by using test light or meterInspect armature insulation for indications of overheating or damaged windings Clean off any carbon deposits or foreign matter which may contribute to later windings failureL-''_ _-l