Factory says 100:1 but reccomended by users is 50:1
oil ratio is 1% Pierre
Most all models of Yamaha outboards can be operated on a 50:1 fuel to oil ratio.
An 1986 model Yamaha outboard requires a 50:1 ratio, roughly one pint of 2 cycle oil, to six gallons of fuel.
The 1997 model, 6 hp Yamaha outboard, requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
If not using oil injection, the 115 hp Yamaha outboard will require a 50:1 ratio.
ratio 50:1
50 to 1
A non oil injected, 1990 model, 2 stroke Yamaha outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
The correct ratio for 1991 85hp Yamaha is 1:50. 1 liter of oil for 50 liters of fuel.
A 175hp Mercury outboard requires a 50:1 fuel to oil ratio.
Depends on year. My 1986 believe it or not states 100/1 right on the motor.
The non oil injected model 60 hp Yamaha outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.