How often should accumulated lint be removed from inside the dryer cabinet and exhaust vent?
Lint should be removed from inside the dryer cabinet and from the exhaust vent every 2 years, or more often depending on dryer usage. This cleaning should be done by a qualified appliance service or ventilation system cleaner. (Page 5)
From the official Sears W11555817a Electric Dryer Manual Pdf manual, page 5
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