At the time of manufacture there existed both 32:1 and 50:1 oils, but the latter is generally recognized as the proper mixture with a quality two stroke oil made for that ratio. Always best to use a name brand oil from a manufacturer of two cycle equipment.
Oh, the parts breakdown is the link below.
It should tell you the ratio on the saw.
32:1
fuel mixture for homelite chain saw
50:1 with an oil made for that ratio
40:1 owner's manual for a homelite st 185 trimmer says 32:1
gennerally Homelites runs a fuel/oil mixture of 32:1
50 to 1. 1 gallon of gas to 2.6 oz of 2-cycle engine oil.
32:1 32to1 ratio is was we run on all the homelite chainsaws and blowers that we repair in my shop
25:1
35:1 is the fuel mix ratio
50:1, meaning Homelite weed eaters with a 2-cycle engine require a mixture of 2.6 ounces of 2-cycle engine oil for every 1 gallon of gasoline. The mixture will stay fresh for up to 30 days, but should not be used beyond that period.
The mix of fuel to oil ratio is 16:1