Tension Unit, Singer (Vintage Original) - NUMBERED fwtheme Pull the cloth taut across

Pull the cloth taut across the flat part of the darner

like later models had

Rivet colors may vary

unscrew it just slightly and adjust the motor up a little bit so your current belt loosens all the way

If your machine's belt slips or squeaks—or looks shiny and glazed—it's likely time for a refresh

Tension Unit, Singer (Vintage Original) - NUMBERED fwtheme Pull the cloth taut acrossOriginal Singer Tension Unit for the Singer 221 and 222 Sewing Machines. Slack Regulator sold separately. It really is a matter of ease and preference, but if your old Singer Sewing Machine, including but not limited to the Featherweight 221, has one of the old style Tension Units then you might consider the option of switching it to a numbered tension unit. You can replace them with an original from another old Singer Featherweight machine, which is