The RL means Factory Remote-Long shaft. I just found this out. It is a factory electric start. I am converting to a short shaft.
Where did you find that info? Remote electric models were not offered until 1990, they were referred to as “REL”. In 1987, OMC offered kits to make engines remote electric start, but that would not be reflected in the model number.
Not that it matters too much, all the part numbers for the various 1987 models are shown in the same parts breakdown.
E15RLCUD is a 1987 15hp Evinrude rope start, long shaft (20″ transom). The electric start on your engine was added as a “kit”.