I think this is my 5th or 6th Johnson with this power head. Didn’t have a reason the remove the cylinders in any of them. They have moved on so I can’t check if the back fire suppressor is still in any of them. I think if I get anymore of these I’ll slide at least one cylinder back far enough to check if they are still in there.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.