The correct fuel mix is:
Age
Less than 60 days old
Oil to fuel ratio
1:50 (2% oil in the fuel mixture) when using original Husqvarna two-stroke oil (recommended)
1:33 (3% oil in the fuel mixture) when using other brand's two-stroke oil
⚠️CAUTION:
Small errors can influence the ratio of the mixture drastically when you mix small quantities of fuel. Measure the quantity of oil carefully and make sure that you get the correct mixture.