50:1
Mixture is 40:1.
40:1 is a good mixture.
This ratio is 40:1.
40:1 ratio
Mac 310 fuel/oil ratio is 40:1
40 / 1
40-1
40:1
The mix is 1:40 for stihl oil and 1:25 for other branded oils.
I recommend 40:1 with good quality oil.
For the 1995 model 40 hp Evinrude, mix at a 50:1 ratio.
40:1 stock ratio to run richer if plug tends to foul 32:1