What Evinrude do I have?

Bill Montgomery

Recruit
Joined
Nov 7, 2010
Messages
2
I recently purchased a 1960 Thompson Sea Coaster complete with what I was told is a 1961 28 HP Evinrude of the same age. The cowling says it's a Speeditwin, but I see no mention of Speeditwin Evinrudes newer than 1950 on this site. The only number I can find is molded into the casing under the carb. It is 309065. The 6 is somewhat suspect. Any guesses?
 

JimS123

Fleet Admiral
Joined
Jul 27, 2007
Messages
8,336
Re: What Evinrude do I have?

The first 28 Speeditwin was a 1962. Model 28202 short shaft and 28203 long. My book says they were only made 62-64.
 

bitterboater

Petty Officer 1st Class
Joined
May 7, 2009
Messages
214
Re: What Evinrude do I have?

The model and serial number should be on the mounting casting. Where it clamps to the transom. There should be a small plate with these two numbers on it. That will tell you what you have and what the HP is of the motor is.
 

JimS123

Fleet Admiral
Joined
Jul 27, 2007
Messages
8,336
Re: What Evinrude do I have?

If the plate is gone, there should be a quarter sized silver freeze plug on the powehead with the model and serial numbers.
 

Bill Montgomery

Recruit
Joined
Nov 7, 2010
Messages
2
Re: What Evinrude do I have?

Thanks for your replies. I'll look where you told me for the numbers.

I have no idea whether or not the motor runs. It turns when you pull the starter cord so I guess nothing in the power end is frozen, The motor itself is reasonably clean, though the paint is often down to primer and sometimes to bare metal. There's lots or corrosion on the gizmo that attaches the motor to the boat and replacing it would be nice, though I expect I could sandblast it into reasonable shape after I replace one of the screw clamps which is broken and the steel bolts that adjust the angle which are badly rusted. It's obvious someone was using a vice grip in place of the missing handle for tightening and I would have to saw off the chewed up end to get it through the gizmo without butchering the threads female threads. (I wish I know what that part was called.)

The cowling is in good shape except the latch that holds it on to the motor is broken. The obvious questions are whether or not it's worth refurbishing and are parts available to do it. I'd like to do it myself, but I have to admit my skills are more oriented to wood working and computers that tearing into engines. Any advise is welcome.
 

dwco5051

Commander
Joined
Sep 14, 2008
Messages
2,524
Re: What Evinrude do I have?

The nice thing about those old motors is anyone with an IQ greater than their belt size can work on them with the help of a good manual. Pretty simple, no electronics. Search this site for starting old motors that have sat for a while to get an idea of where to start.

The biggest problem will be corroded or loose wiring connections and corroded bolts if you really have to do a tear down.

Good luck and use this site to ask questions. You will find a lot of help.
 
Top