trying to figure out the year for my old evinrude ouboard and the correct fuel mix

i just bought it and don't know much about it. the serial number is 6702d e05726. i need to figure out the year and the correct fuel mixture. thanks!!

Re: trying to figure out the year for my old evinrude ouboard and the correct fuel mi

Looks like you have a 1967 there....

Re: trying to figure out the year for my old evinrude ouboard and the correct fuel mi

1967 6hp Fisherman

They say you can run them on 50-1, but I personally would richen that up a little, as I believe it has the bronze sleeve bearings, but may be roller in the 6. Modern oils dont foul the plugs like they use to, if it were mine Id be running 40-1 or 30-1, but that is me.

Re: trying to figure out the year for my old evinrude ouboard and the correct fuel mi

In that year the 6 horse already had needle bearings.and you can safely run it on 1:50. The 4 horse and below were continued up to the mid seventies with the sleeve bearings and should be run on a 1:24 mix

Re: trying to figure out the year for my old evinrude ouboard and the correct fuel mi

oops, double post

Re: trying to figure out the year for my old evinrude ouboard and the correct fuel mi

ok thanks a lot! now i have another problem...i had the motor running last night with the little gas that was in the can that came with it. today i mixed the 50:1 and put some gear oil in the bottom of the motor and now it won't start....did have some problems with the spring coming off when pull starting it but seems to be staying on now but will not start

Re: trying to figure out the year for my old evinrude ouboard and the correct fuel mi

There is a thread in the FAQs "Outboard WOnt Start", follow it and let us know what you find

Re: trying to figure out the year for my old evinrude ouboard and the correct fuel mi

rolmops said:

In that year the 6 horse already had needle bearings.and you can safely run it on 1:50. The 4 horse and below were continued up to the mid seventies with the sleeve bearings and should be run on a 1:24 mix

Click to expand...

Yep, exactly right. The 6hp was actually a more improved 5 1/2. They put needles in the 5 1/2 most of the way in 1961, but when the 6hp came out, it was fully jeweled like the bigger motors. Also like you said, the lightwins and JW's were all bushing type motors and needed a bit more oil. 24:1 and richer. The later 60's models did add the top crank needle bearing set up, because the top crank journal was prone to failure and splattering oil all through the ignition system. Top bearing failure was typically cased by the oil tube that came from the bottom bearing, either breaking away or clogging with hardened oil.

Re: trying to figure out the year for my old evinrude ouboard and the correct fuel mi

And......Failure of the lower main bearing carbon seal allows water entry into the lower bearing, then that hose pipes the water up to the top bearing, wearing it out. Then somebody blames it on the oil.

The situation wasn't helped much when they changed the motors so you don't have to pull the powerhead to change a water pump. Now the seal never gets any attention or inspection. Not that many people ever did it right when they did pull the powerhead.