40:1
pre mixed ration of oil : gas
50/1
I used to have one of them and am pretty sure the ratio was 1/40.
To turn off the "Change Oil" lite turn on the ignition, pump the gas pedal to the floor four times, then start the vehicle.
Fuel ratio: 25 parts gasoline to 1 part oil
In all Craftsman chain saws going back to at least 1990, the oil/gas ratio is 40/1.
Food was divied using ration tickets, and so was oil and sugar.
Per M23S operator's manual, 50 part s gasoline to one part 2-cycle oil. 50:1
If operating the engine without the oil injection system, supplied with the engine, use a 50:1 ratio. When using the oil injection system, no additional oil is required.
I recommend 40:1 with good quality oil.
The correct oil to gas ration for a 1996 Yamaha YZ 125 is 32:1. This means you need to use four ounces of oil for every gallon of fuel.