1995 Johnson/Evinrude Outboards 40 thru 55 2-Cylinder Service Manual, Page 280Get this manual
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[[] 4Remove pinion and base
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Before disassembly, scribe marks on frame and end caps for reference during reassembly
[]] 5Remove the two thru bolts and separate componentsCleaning and Inspection 1Inspect the brushes; replace if one-half worn, damaged, or crackedReplace brush springs, if weak2Clean commutator with 300 grade emery clothIf commutator surface is unevenly worn or pitted, turn on latheRemove any trace of oil or metal dust from commutator
3Check the armature on growler for shorted turnsCheck armature for grounding by using test light or meterInspect armature insulation for indications of overheating or damaged windingsClean off any deposits of carbon or foreign matter which may contribute to later failure of the indings
4Check permanent magnetsMagnets should attract steel or iron objects held inside the frameWeak magnets will cause excessive RPM on No Load Current Draw, Electric Starter test