Bernina 820 QE 业主指南

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Special tips f

or embroide

ring

Always keep your sewing computer up to date
See instruction manual chapter 

«Setup-Program/Update»  

 

Updates are available at: www.bernina.com/downloads.

• Practical stitches = increased upper thread tension (higher number) • Decorative 
stitches and embroidery motifs = reduced upper thread tension (lower number)  
• Always adjust the upper thread tension according to the thread features  
• Increase the upper thread tension if necessary when using easily sliding and 
break resistant threads, e.g. cotton, polyester • Reduce the upper thread tension if 
necesssary when using threads which are prone to break easily, e.g. rayon/viscose, 
metallic and polyamid • Adjust the upper thread tension when using a  
different weight bobbin thread
   
Always adjust the upper thread tension according to the fabric 
• Heavy weight/firmer fabrics require an increased upper thread tension  
• Light weight/softer fabrics require a reduced upper thread tension 

 

 

 

If many loops or irregularities occur in the stitch formation:  

 

1. Make sure that the thread is threaded correctly for sewing or embroidering. 

 

2. Please confirm the lower thread tension is set correctly. 
The basic settings are indicated in the bobbin door of the sewing computer as well 
as in the instruction manual see chapter 

«Thread tension».  

 

 
Always adjust the lower thread tension according to the thread  
features  
For slippery and strong threads: Shift the lug at the lower thread  
tension 1-2 points to the right (increased lower thread tension).
With threads which are prone to break easily: Shift the lug at the lower thread  
tension 1-2 points to the left (reduced lower thread tension). 

 

 

 

Silicone oil is a lubricant which dissipates without trace. The thread slippage 
through the needle improves and thread breakages can be reduced.   
• Use BERNINA thread lubricator

Lubricating is not necessary: With easily sliding, tensile threads with smooth 
surface, e.g. polyester, cotton, rayon up to half a year old   

 

Lubricating is recommended: With threads which are prone to break having a 
rough surface, e.g. metallic threads, rayon older than half a year 

 

 

 
Attention: When threads are lubricated using silicone, it may be necessary to  
increase the upper thread tension.   

 

 

• Oil the hook after having used the content of 3 to 4 bobbins. The machine 
screen will display a reminder • Increasing noise of the motor and/or irregular 
stitch formation can also be an indication that oiling is necessary  
• Remove any lint from the hook and the bobbin area, then remove the stitch plate 
• See instruction manual chapter 

«Maintenance/Cleaning»

• Use the straight stitch plate when embroidering • Always use a suitable stabi-
lizer. This ensures proper stability of the fabric in the hoop and prevents the em-
broidery from distorting • Use a water-soluble stabilizer on the right side of pile or 
longfiber fabrics to prevent the threads from sinking into the pile too deeply • See 
manual instruction chapter 

«Preparation/Stabilizer»  

 

 

• High speed when using strong threads and simple embroidery designs • Reduce 
speed when using fine threads or with demanding embroidery projects
    
Further information 

   

Further information, various animation and videos can be found at:  
www.bernina8series.com/US/testdrive, please read the instruction manual or 
watch our Trainings-DVDs.