What Sewing Machine Manuals Say About Maintenance: A Model-Specific Audit of Cleaning, Oiling, and Service
The maintenance instruction that matters is the one tied to the exact machine, not a habit carried over from another model. In a fixed audit of five official records from Brother, Janome, and Singer, the permitted owner actions ranged from specific oiling instructions to explicit no-owner-oiling language, while cleaning and service boundaries also differed. The … Read more