Honda Outboards BF40A/BF50A Service Manual, Page 424Get this manual
BF40A-BF50A 1) Apply grease to the oil seal lip, Check the oil seal lip.lf the oil seal lip is damaged, replace the front bracket as assembly2) Expand the brushes and install the armature taking
[1] ARMATURE
care not to damage the oil seal, Remove the burrs at the armature shaft with fine emery paper before assembly Make sure that the brush springs are in place
FRONT BRACKET
[2] BRUSH SPRING
[4] OIL SEAL LIP
3) Apply grease to new motor O-ring and install it on
the front bracket4) Make sure there is no metallic part (e.gwasher, etc