Reply To: Evinrude Sportwin Help

[Geer Pyron]

I’ve been working on a lot of these motors lately. Just finished and parted ways with the “Sweet ‘61”. Sad to see it go. Such a nice little motor…
Anyway, I’ve always had the best luck with motors when I take them completely apart. Some will say do as little as possible, but I find myself chasing problems with that approach. Take it apart. Split the case. Easy to free stuck pistons when one actually has access to them. PB Blaster, a wood dowel as fat as the cylinder allows and a hammer. Doesn’t take days of soaking or ovens. When the piston is unstuck, make sure you beat it the right way to get it out. I use a fat dowel with a rounded end to fit in the connecting rod.
And once out, if the rings are stuck, DO NOT break them in your haste. Take your time there. It’s really hard to find rings for that size and era of motor. Dunno why.
Furthermore, taking the whole thing apart allows one to clean it all up, finger hone the cylinders, inspect the bearings, and shoot, even measure how round the cylinders are. You can even blow out the internal oil passages while it’s apart. And if it’s the first one you’ll be doing, it’ll be like that first fish you had to clean!
Why not?
Juss sayin’.

 

JMGP