oil % for Merc 350 outboard

[wtp]

Does anybody know what the oil/fuel mixture is for a 1963 merc 350 35hp? I was told 20/1 and then someone else said that was to much oil use 50/1. I don't know what to mix it at. Any help would be great. I don't wanna be half way across the lake and fawl out a plug or be to lean and burn the motor and have to row back to shore.

[tbelisle]

50/1 is the standard when in doubt.

20/1 is way too much. you would end up fouling your plugs and it would smoke like a Muta fuka!

[JT]

There's got to be a dealer somewhere you can call or find the info with a google search. 20/1 is definetely way too much. Hell, even my chainsaw and brush whacker use 32/1.

[tbelisle]

At 32/1, you must change your plugs often or at least have to crank quite a bit before it starts. That seems a little much to me!

[crosshair]

solution.....use current motor as anchor.....
aquire new one!:D

[Martok]

There is a FAQ section on this site that covers what u are looking for

http://www.oldmercs.com/lowerunit.html

[wtp]

maybe this can help others as it kinda helped me.
http://XXX.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=36;t=000007
Don't forget to replace the xxx's in the link. Thanks everyone for the help.

[beanerspeed]

50: 1 is correct for any outboard, merc. o.m.c. ect, new engines have v.r.o. that change the amount through the r.p.m. band, nothing you have to worrie about,you can run 32:1 but it will smoke and not run the best,as a former world champion in F1-BOATS i built my owen motors,and still do for a few people,still hold world rec. 169.53, your motor is not a boat anchor,if it runs and has good compression and a good gear case fix it ! ! ! It can still last for years, if you need help p.m. me, THE OUTBOARD MAN