MID 60's Evinrude gas/oil mix??

Post by **DaveH** » Sun Jun 11, 2006 7:04 am

YEP, I put this in the motor forum as well... *laughs*

OK so my big question is this; I have just received an old 9.9hp (or 10?)Evinrude. It's from somewhere circa 1963-1965 or so I'd say. Great motor for sure!!

Question is, what's the oil/gas mix I should be using, and what TYPE of oil should I be using??

I really wanna get this figured out so I can try starting her, and seeing what other kind of work she needs!

Thanks!!

PS...if it IS a 10hp and not a 9.9, do I have to register it?? Or do I just need the operator card? I can't remember what the rule is. The boat is 14ft

Post by **BLR** » Sun Jun 11, 2006 8:21 am

good day, if it's a 10 horse u gotta register the "boat" that it's on. And the mix is probably 25-1 but I'd check with a marine dealer to confirm. If it's and older 10 horse it could be 32-1 etc. etc.

bonne chance

Post by **Mountain Man** » Sun Jun 11, 2006 8:30 am

-- ------------------------------------------------------------------------------
Here is an older post I left for some else. Good Luck.
"I found a couple of web sites for you to check out. I read that it might say under the cover of your motor. Anyway check these sites "

http://www.maxrules.com/fixfaq.html#manual

http://www.outboardrepairs.com/oil_mixture/

Back to top

Post by **Woodsman** » Sun Jun 11, 2006 9:43 am

10 hp was built up to 1963. 24 to 1 gas/oil ratio.
9.5 hp from 1964 until at least 1970. 50 to 1 gas/oil ratio.
9.9 not built in the 60's.
If you can post the model # I should be able to identify the year.

Good Luck

Post by **Jebby** » Sun Jun 11, 2006 11:41 am

i have a 1954 johnson 10 horse.... i run it at 24:1 its a lil smokey but it runs great and its way better to have a lil much oil than not enough

Post by **Woodsman** » Sun Jun 11, 2006 3:34 pm

Jebby wrote:i have a 1954 johnson 10 horse.... i run it at 24:1 its a lil smokey but it runs great and its way better to have a lil much oil than not enough

24:1 is the correct mixture required by the manufacturer. These motors used cams(bushings) instead of bearings & require the higher level of lubrication.
In 1964 the replaced the 10 hp with the 9.5 hp which used actual bearings which allowed the use of the 50:1 mixture.

Best Wishes