jonsered oil/gas mixture ratio is 50 to 1.
The 451 is a 25:1 mix or 5.12 oz of oil to a gal of gas.
25 to 1
it's electric...there is no gas
50-1 ratio most definitely.
50:1
40:1
50"1 with the proper oil
most chainsaw gas/oil mixtures is 32/1
The perfect gas oil mixture for the jonsereds 49SP is 1:40 !
50 to 1 is the best for all 2 cycles,
50:1 with the appropriate two cycle oil.
Mix 1/2 pint (8oz.) for every gallon of gas. 16:1 Ratio