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Overview
A candid two-minute clip of an owner checking the air filter on a high-hour BX25 (2,200+ hours) and deciding it's finally time to replace it rather than blow it out again. The whole video is essentially that inspection moment, holding the filter up to sunlight to gauge dirt buildup, with no replacement steps shown. Best for owners curious about filter condition at very high hours.
Posted by the This Old Man channel, which appears to be an individual owner sharing quick, unscripted maintenance moments from their own machine.