The proper fuel mixture for a Yamaha Tri-Z 250 is typically a 32:1 ratio of gasoline to two-stroke oil. This means for every 32 parts of gasoline, you should mix in 1 part of two-stroke oil. It's important to use high-quality oil designed for air-cooled two-stroke engines to ensure optimal performance and engine longevity. Always refer to the owner's manual for specific recommendations based on your model year.
yamalube at 32:1
Most all models of Yamaha outboards can be operated on a 50:1 fuel to oil ratio.
Shop Manual says 50:1
According to yamaha, it's 32\1 or 40/1.
Fuel mixture ratio for Yamaha rt100?
The fuel and oil mixes by itself. Why would you need to do it yourself.
one liter fuel 10 mill oil
The 1984 model, 200 hp Yamaha requires a 50:1 ratio.
Yamaha has been oil injected since they began. If you need to mix yet, run 50/1
oil ratio is 1% Pierre
The. Mix is 20 to 1 it will run well on that. With 91 octane gasoline
32 to 1 which is one gallon of gas to 4 onces of oil