Step 1:     Clean, oil and Lubricate

1. Delint inside and wash outside of machine

2. Oil all applicable parts                                               

3. Lubricate all necessary gears and pulleys           

4. Remove and clean tension assembly

 

Step 2:     Check Electrical

 

1. Check light bulb and any pattern indicator lights

2. Check and adjust foot control range

3. Check power cords and wiring for wear

4. Check motor and belt operation

 

Step 3:    Check sewing and feeding mechanisms     

 

1. Check and adjust needle bar and hook timing  

2. Check and adjust pendulum timing                          

3. Check and adjust Feed dog and stitch length

4. Check and adjust stitch width                                       

5. Check and adjust bobbin case clearances

                                                                                     

 

1. Check bobbin winder and b/w stop

2. Check and adjust top tension

3. Check and adjust bobbin tension

4. Check and adjust stretch stitches

5. Check and adjust buttonhole balance