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The 451 is a 25:1 mix or 5.12 oz of oil to a gal of gas.
its 40:1. Check the specs for this saw at: http://www.acresinternet.com/cscc.nsf/ed1d619968136da688256af40002b8f7/801048d6175e831988256b6b00189180?OpenDocument
25 to 1 is the mixture for the fuel
50-1
50/1
I recently acquired this saw and the fuel mixture listed on the cap is 16:1
It should tell you the ratio on the saw.
what is the fuel/oil mixture for a stil chainsaw model 1629
The 1962 Solo Rex (125cc) instruction manual states the fuel mixture ratio is 24:1. Lennyboy.
1 gal gas + 2cycle engine oil
50-1 ratio most definitely.
The carb on a McCullouch chainsaw can be adjusted by turning the idle mixture screws. This controls how much fuel and air are mixed inside the carburetor.