i run a 25 hp spirit and i find it runs best between 40- 50 to 1
According the 1977 Suzuki Spirit 25 HP owners manual: 50:1 mix
25:1
I have a 1972 85esl72 Johnson outboard motor and I use a 50:1 ratio.
100-1
50:1
20/1
50 to 1
32:1
50-1
50:1
50:1
40:1
50/1