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What is the fuel mix ratio for a 1987 Yamaha yz 250?

Anonymous

∙ 12y ago

Updated: 10/21/2022

it is 32:1 4 ounces oil to 1 one gallon gas make sure you have a ngk b10Eg spark plug too to ignite the gas / oil properly some people use the 40:1 ratio too but that ratio might spell danger for your piston

Wiki User

∙ 12y ago

What else can I help you with?

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