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Evinrude outboard gas oil ratio. However this ratio wont work for all small engines and in fact using the incorrect ratio can cause the spark plugs to foul become saturated with gasoline. The late model 25 Evinrude suggests operating on a 1001 ratio. Fuel mixture for Evinrude 15 hp.

A - The following is generally true. For new two-stroke boat motors there is usually a break-in time that requires a richer oil to gas mix meaning you need to add more oil. Most two-stroke engines that are used for boats require a 501 ratio although there are a number of exceptions.

Outboard boat motors with two cycles manufactured by Johnson and Evinrude after 1964 require a 2 percent fuel to oil mixture. Just so what is the fuel to oil ratio for Evinrude. The standard ratio for most small engines is 321 or 32 parts fuel to 1 part two cycle oil.

Stick with 501 for the 1964 and newer motors. That is 50 parts fuel to 1 part oil and 100 parts fuel to 1 part oil respectively. Use 16 ounces of TCW-3 rated oil to six gal.

I just bought an 85 15 horse and my motor has a sticker on it calling for 1001 mix. The CE in your model number says it is a 1989so that would use a 501 mix. High performance usage racing requires a ratio of 251.

1958 and prior used 201 1959 thru 1963 used 241 1964 and newer use 501. Ad Find China Manufacturers Of Outboard Motors. Ounces of Oil to be Added.