The required mix is 24:1 but you have to read the manual carefully as it says one quart of oil to a full tank of gas, which is six US gallons. That makes a 24:1 mix but further on the manual says ‘for ease of measurement’ to mix one half pint of oil with one gallon of gas, which is for smaller amounts. I’m assuming the company figured it was easier for the average Joe to measure out a half pint instead of one third of a pint of oil. This would allow for a bit of error on the users part to protect the motor in case in case they didn’t measure out enough oil.
Hello. I often wonder what it meant to a full tank of gas. Because you have 6 gallon tanks and the 5 1/2 and ten horse motors usually used a 4 gallon tank.