Singer M3330 User Manual - Page 34

Maintenance Attention: Disconnect the machine from the electrical supply by removing the plug from the main socket. When cleaning the machine, it must always be disconnected from the electrical supply. Remove the needle plate: Turn the handwheel until the needle is fully raised. Open the hinged front cover and unscrew the needle plate screws with the screw driver. (1) Cleaning the feed teeths: Use the brush supplied to clean the whole area. (2) Cleaning and lubricating the hook: Remove the bobbin case. Snap the two hook retaining arms (3) outwards. Remove the hook race cover (4) and the hook (5) and clean with a soft cloth. Lubricate at the point (6) (1-2 drops) with sewing machine oil. Turn the handwheel until the hook race (7) is in the left position. Replace the hook (5). Replace the hook race cover and snap back the two hook retaining arms. Insert the bobbin case and bobbin and replace the needle plate. Important: Fabric lint and threads must be removed regularly. Your machine should be serviced at regular intervals at one of our service centers. 27