Displaying sections and components for the Ariens 946501 (ST622) - Ariens 22" String Trimmer, 6hp Tecumseh (SN: 050000 - 050000)

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Fuel/Oil Mixture

Check your owner's manual for the proper gas-to-oil mixture. For almost all modern two-stroke engines, a 50-to-1 mixture is recommended. This leaner mixture is possible due to improvements in the quality of modern mix oil. That requires about 2 1/2 oz. of oil for every gallon of gasoline.