What is the oil to gas ratio for a husqvarna 137?

The Husqvarna 137 chainsaw requires a fuel mixture of 50:1, which means 50 parts gasoline to 1 part two-stroke oil. This translates to using 2.6 ounces of oil per gallon of gasoline. It's important to use high-quality two-stroke oil to ensure optimal performance and longevity of the chainsaw. Always consult the owner's manual for specific recommendations.