50.1
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 1990 model Force outboard is of a 2 stroke design requiring a 50:1 fuel to oil ratio.
The dry weight of an 85hp Yamaha outboard is 245lbs.
1990
I think the D is for 1990
If not using the oem oil injection system, use a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel. If operating with the oil injection system, supplied with the engine, no additional oil is required.
For the 1990 model, 25 hp Evinrude outboard, use a 50:1 ratio, roughly 1 pint of 2 cycle oil, to six gallons of fuel.
The weight of a Yamaha 85aet or 85a build in 1989 - 1992 is 119 Kg
50/1
If running without oil injection, a 50:1 ratio is required, roughly one pint of 2 cycle oil, to six gallons of fuel.
no - the shaft and splines are too big do you know where there is a 90 yam gearbox for sale
50:1 or 16oz of oil to 6 gallons gas