The main part on your motor that was changed was the rudder.
Your motor originally came with one like this. Easy identifiable
once you know what to look for. Searching – Ole Evinrude –
history- biography – outboard motor -.Super Elto and so on
can provide a lot of info on how Elto Light Twin and other
Elto models came about. As far as knowing and being able
to identify a model year by its parts that comes from investigating
each example you come across learning what is correct and
what isn’t. As far as the operation, here are couple videos I have
done for those that are new to Elto and Super Elto motors.
I hope they give you some basic understanding of how they
function. This is amazing technology for its day as to how well it
works when you consider its moving into its 100th year.
Tubs
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.