Made by Scot/McCulloch. Not same as 1965 and later 4 hp mechanically.
Check magneto plate for brand and model. Several magneto manufactures supplied
the small engine makers including outboards. Condenser that fits space
available with a long enough lead need only be within a range of mfd to work
Coils may be available, if not a reasonable alternative is to use a coil that
will fit even if lamination need to be altered. Points often can be polished and
cleaned up. You may even find a complete magneto at an outboard a swap meet if you
know what you are looking for and keep your eyes open.
First thing is to look at magneto plate for brand and model information.
Good. Now that you know what you are looking for DOUBLE CHECK the outboard model
and the magneto model. There are several vendors on AOMCI site who may be able to supply
what you need from a parts motor "out back" Place a wanted to buy ad on AOMCI free
ad site. McCulloch bought Scott Atwater so prior Scotw Atwater may have same
Lastly be sure the motor you intend to repair has no major issues before you buy parts.
Sometimes an old outboard is beyond help.