need help with fuel mixture!!!

[dcf]

howdy, I just bought a 1965 6.5hp envinrude fisherman outboard, and am wondering the fuel/oil mixture ratio. The guy I got it from couldn't remember if it was 25:1 or 50:1. Any help would be great. I looked all over the motor looking for it but couldn't find anything.

THANKS!!!

[mooseknuckle]

50:1 is your winner.

[dcf]

thanks a BUNCH!!!!!

[jusfloatin]

POST-1964 JOHNSON/EVINRUDE/GALE - The official stance on 1964 and newer OMC engines is to run them 50:1 and it's a good rule of thumb to follow on the bigger motors. OMC also renegged on the late 1980s 100:1 recommendation on the smaller (4-35hp) motors, bumping them back to 50:1. I've found that the smaller (3, 4, 5, 6hp) motors from post 1964 up into the mid-1970s may appreciate a bit of extra oil as they still have some bronze sleeve bearings. I run 40:1 in my '72 4hp, as I have a pile of holed blocks, burned cranks and twisted rods that were run at 50:1.

1960-1964 JOHNSON/EVINRUDE/GALE - 18hp and up can run at 40:1, as they are mostly jeweled motors at this point. Anything smaller run it at 24:1.
Pre 1960 - any size, run it 24:1. If it's used for racing or high performance, double up the oil...


This is taken from Iboats.