1991 Yamaha 85 hp

[Jonburrows]

Can anyone tell me to oil/gas mixture for this 1991...85 HP...thanks

[robert graham]

I would use 50:1 mixture....or about 2.6 ounces of 2 stroke oil per gallon of gas.

[boscoe99]

I suspect that you have a C85 and not an 85. There was no 85 HP Yamaha offered by Yamaha USA in 1991.

If the motor is really a C85 model then the fuel to oil ratio is indeed 50:1 as robert suggests.