4ozs to 1 gallon
i have a yz 125 and i use 40:1 so 125ml to 1L
30:1
Premix (mix oil and petrol at a certain ratio) Contact you local Yamaha dealer for the best mix.
50:1
91 octane 32-1 ratio
2 strok(gas mixed with oil)
there is no ratio they are oil injected there is no ratio they are oil injected
Oil fuel ratio for z 1983 Yamaha IT should be listed on the oil bottle. The most common ratio is 50:1.
you would mix it at 32.1 ratio which is 4 ounces of oil per gallon
Sign up at myyamaha.com and download the service data sheet for your bike which lists the stock engine oil type and ratio. https://www.yamaha-motor.com/sport/myyamaha/login/L3Nwb3J0L215eWFtYWhhL2hvbWUuYXNweA==/starthere.
the oil fuel ratio is 32 to 1 you should not change ratio even if you do enginge mods keep it the same