RE: 23cc Engine break-in
let it warm up a bit...just drive it..say 15 to 20 minutes..let cool down get cold...check the the cylinder head bolts are tight
run again.......let it rip you should br ok.....oil/gas mix..25:1...thats 5oz oil to 1 gallon of gasoline....
you may have to make minor adjustments to the carb..Best to you have fun..Slawhammer