recent I had purchased a boat with a 60hp Howard Johnson out board nedded to know the proper fuel mixture and oil
Yamaha recommeded 20/1
The 1978 model, 80 hp Mercury requires a 50:1 ratio, roughly one pint of 2 cycle oil, to six gallons of fuel.
40 parts gasoline one part two cycle oil
the right mix is 50:1
50:1
The fuel to oil ratio should be 32:1
switch up the air fuel mix on the carb or maby the spark plug is bad
100 to 1 100 mls of oil to 5 litres of fuel, use premuim fuel and good quality 2 stroke oil
.80 for 1 qt.
50:1 ratio 16 oz 2 stroke marine motor oil to every 6 gallons of gasoline this is most common I use this mix ratio in my 80 hp mercury spitfire
I Have the same bike, and i use 32:1 but that's just me. I believe it depends on what you are using it for. Im not 100% sure that that is stock.
32:1