The perfect gas oil mixture for the jonsereds 49SP is 1:40 !
25 : 1
.025:1, gas to oil
Looks to be 40:1 gas to oil
I use 4oz. per gallon of gas.
50:1
jonsered oil/gas mixture ratio is 50 to 1.
8 oz of oil per gallon of gas
i would have to know what kind but it is gennerally 32:1
1 gal gas + 2cycle engine oil
The 451 is a 25:1 mix or 5.12 oz of oil to a gal of gas.
Two cycle engines have an oil gas mixture and if there is too mush oil to gas you will see it burn as white or gray smoke That or your valves are bad.