40:1 with high quality 2-stroke oil mix would be fine.
http://store.chainsawr.com/
50:1 is incorrect. That mixture will not allow enough compression and the unit will be very hard to start, if at all. That mixture works well for Sthil products. If using an oil other than McCulloch, the ratio is 40:1. Brand specific McCulloch two cycle oil is 20:1.
25 to 1 is the mixture for the fuel
I use 4oz. per gallon of gas.
i would have to know what kind but it is gennerally 32:1
.025:1, gas to oil
Looks to be 40:1 gas to oil
8 oz of oil per gallon of gas
The proper mixture is 40:1 or 3.2 oz oil to 1 US Gallon of gas.
50:1
Be of proper age, go to the store, and purchase one.
Regulates the amount of fuel to the engine to maintain the fuel/air ratio at the proper mixture
It reads the vibrations that result from the ignition of the air fuel mixture in the engine. The computer uses that information to calculate proper ignition timing.