Maintenance:
- Remove Covers & Inspect
- Delint & Clean Machine
- Lubricate All Parts
- Deburr Hook
- Deburr Needle Plate
- Replace Needed Parts
Check & Adjust:
- Needle Threader
- Bobbin Winder
- Foot Controller
- Power Cord/Connection
- Thread cutter
- Belt Tension & Condition
- Motor Operation
- Feed Dogs
- Needle Bar
- Presser Foot
- Upper & Lower Tensions
- Electronic Connections
- Timing
Replace:
- Needle
- Thread Cutter Blade
- Light Bulb
As Necessary