1971 Johnson 125HP outboards Service Manual, Page 88Get this manual
7-8 cRemove drive end head, taking care to avoid damaging bearing in headdRemove commutator head by tapping lightly with rubber malletRemove brushes and spring from holderLift armature from frame and field assemblySee Figure 7-4 CLEANING, INSPECTION AND REPAIR
aInspect the brushes; replace if one-half worn, damaged, or crackedReplace brush springs if weak92.278