572xp fuel mixture

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  1. S

    550XP mark 2 / 572 fuel mixture with pipe

    Greetings, Picked up these two saws over winter, great overall saws. 550 has 18" bar and 572 has 24". I have run about 5-6 tanks of fuel through the 550 and only about 1 through the 572. I have been using 50:1 ratio as the dealer suggested. Echo power blend oil. 89 octane fuel unfortunately...
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