Found this link via Google and it answers your question. I have just purchased a 1990 waverunner LX and was looking for the same info. A PWC mechanic did tell me 32:1 ratio. http://www.dansmc.com/2stroke_oil.htm I own a Yamaha 1989 Wave runner, and the fuel to Oil ratio is 50:1. Hope this helps, i guess there is a bit of a difference between the 1990 adn 1989.
TURBO
on any engine good compression would be anything over 100psi, though really good can be up to 150+ anything under 90psi and your engine will not run.
The ratio should be 40:1 unless you have installed aftermarket domes, in which case the ratio would be 32:1.
It would be wise to.At 32:1 ratio
the safest mixture would be 32 to 1
I would run a mix of 32:1 with 89 octane fuel.
The fuel to oil ratio for a 2000 model, 15 hp Yamaha outboard would be 50:1. Roughly 1 pint of 2 cycle oil to 6 gallons of fuel.
Amazon was the cheapest place I found to buy the Mizuno waverunner. They have them in new and used condition. However, you can contact Mizuno direct and ask them if they have any outlet stores. Since this is a very popular shoe, they may not. Also I would ask if they would provide you a coupon to purchase your first pair.
the blaster
On my 1986 it 200 i run the good klotz oil at 50:1 but if u run a cheaper oil i would run a 36:1 or 40:1 ratio the klotz is expensive but is the way to go because it extends engine life and smells good too
Yamaha motorcycle parts can be purchased in a variety of locations. One important location would be a Yamaha dealership or an automotive store is that is authorized to sell parts and products from Yamaha for motorcycles.
For monohybrid cross the genotype ratio in f2 generation would be 1:2:1 and phenotype ratio would be 3: 1