The answer to your question is "yes".
Tecumseh says 24:1
A lot of people run them with less oil to avoid "the drip"
Running her at 24:1 is the safe answer.
If you object to the excessive smoke and oil dripping out of the exhaust, lean out the fuel oil mixture to something you're comfortable running with.
I personally have had no problems running old Tecumseh's at 50:1 with a quality synthetic oil. Some guys run an even leaner mix than that.