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50:1
50:1
50 to 1. Use good Oil
50:1
50:1
100:1
50/1
The fuel mixture for a Yamaha 40 hp 2 stroke outboard engine is 50:1, gas, oil mixture. You should use new gas when you get the engine ready for the season.
Most all models of Yamaha outboards can be operated on a 50:1 fuel to oil ratio.
one liter fuel 10 mill oil
An 1985 model, 25 hp Mercury outboard requires a 50:1 fuel, to 2 cycle oil ratio.
oil ratio is 1% Pierre