50:1 as recommended by the manufacturer
THE ONE IK HAVE RUNS AT A 32:1 fuel/oil mixture
50:1
3.2 ounces per gallon
Usually this is written on the fuel tank cap or on a sticker nearby. Go check on the unit.
50 to 1. 1 gallon of gas to 2.6 oz of 2-cycle engine oil.
50:1 is pretty universal these days, if in doubt go 3 oz. oil to a gallon of fuel,
40:1
The air mixture screw does that.
The carburetor on a Weed Eater Featherlite SST25 is adjusted by turning the screws on the side of the carburetor. They control the idle mixture and idle speed of the engine.
50:1 -Matt
If you use Stihl genuine two stroke mix, then the ratio is 50:1 eg 500ml to 25 litres fuel
usually 32:1