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50:1
It should tell you the ratio on the saw.
50-1 ratio most definitely.
jonsered oil/gas mixture ratio is 50 to 1.
The best mixture ratio for this model is 50:1. You can also get away with 40:1.
what is the fuel/oil mixture for a stil chainsaw model 1629
I recommend 40:1 with good quality oil.
The 1962 Solo Rex (125cc) instruction manual states the fuel mixture ratio is 24:1. Lennyboy.
The perfect gas oil mixture for the jonsereds 49SP is 1:40 !
The fuel mixture is 50:1. If you are using a cheap oil, you should consider mixing it 40:1.
If using an oil other than McCulloch, the ratio is 40:1. Brand Specific McCulloch two cycle oil is 20:1.
With current fuels and oils, generally everything is now 50:1 using a name brand oild made for the ratio.