I don’t think the plastic cap actually came on
motors when they were new but was a
replacement. However aluminum caps that
size can be found on Cub’s, Mate’s, and some
4266 Pals at the end of the production of
that model. 4207, 4253, and EARLY 4266
Pal motors have a cap that is larger.
I’ll get you pictures tomorrow of the cap
I believe your looking for.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.