Official Singer overlock sewing machine parts

How to replace the On/Off switch on your Singer overlock sewing machine

• Unplug the sewing machine's power cord from the wall outlet.
• Remove the screws securing the belt cover to the sewing machine and pull the belt cover off.
• Remove the screws securing the On/Off switch to the mounting bracket. Remove the terminal block mounting screws and remove the terminal block. Disconnect the On/Off switch wires from the terminal block and remove the On/Off switch.
• Connect the new On/Off switch wires to the terminal block. Reinstall the terminal block and screws. Position the new On/Off switch on the mounting bracket and reinstall the mounting screws.
• Position the belt cover on the sewing machine and reinstall the belt cover mounting screws.

What to do when your Singer overlock sewing machine won't turn on

A power supply failure, bad outlet cord or a failed On/Off switch can prevent the sewing machine from powering up.

Check the power supply first. Plug a lamp or other small appliance into the electrical outlet that you're using for the sewing machine to make sure the outlet works. If the electrical outlet is dead, reset the house circuit breaker for the outlet. If the outlet still doesn't work, try using a different outlet to power the sewing machine.

If the electrical outlet is okay, unplug the sewing machine and check the outlet cord for damage. Replace the cord if it's damaged.

If the outlet cord is okay, check the On/Off switch for continuity using a multimeter (with the sewing machine still unplugged). With the switch turned to the 'on' position, the meter should measure near 0 ohms of resistance through the On/Off switch. If the meter measures infinite resistance, replace the On/Off switch because it's preventing the sewing machine from getting power.