piston scoring

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  1. F

    Echo CS-590 wont idle, scoring on new piston. Air Leak?

    I recently purchased a "lightly" used Echo CS-590 from an older couple (still had the security tag stuck to the bottom). I took it home and put fresh 50:1 in the tank and fired it up. It popped right away but would only stay running past half throttle. Anything less than half and it would stall...
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