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4-3. Presser foot (Active presser device)
WARNING :
Do not place anything under the presser foot when turning the power ON. If the power is turned ON while
placing something under the presser foot, the sewing machine displays E910.
1. To avoid personal injury, never put
your fingers under the presser foot.
2. Be aware that the presser foot pres
-
sure varies when the presser foot or
the throat plate is changed.
1. Be sure to input a positive value on the operation panel in the case the micro-lifter function is not
used. If not, the presser foot is slightly raised and the feed dog is unable to provide a sufficient effi
-
ciency of feed.
2. In the case of using the micro-lifter function, the efficiency of feed is likely to be insufficient. To
achieve the sufficient efficiency of feed, reduce the sewing speed or help feed the material by hand.
4-3-1. Presser foot pressure
The presser foot pressure is displayed in section
A
on the panel. (Example of display : 100)
[How to change]
1) Display the presser foot pressure entry screen
by pressing
❶
.
Input value on the panel
Presser foot pressure
(Reference)
0
Approx. 80 N (8 kg)
5
(Factory-setting at the
time of shipment)
Approx. 100 N (10 kg)
2) Change the presser foot pressure as desired
by pressing
❷
. (Range of input values on the
panel is from -20 to 200.)
* Refer to the following for a rough indication of
the input value on the panel and the presser
foot pressure.
3) Confirm your entry by pressing
❸
.
Then, the sewing screen is displayed.
If the power to the sewing machine is turned ON while the material, etc. is placed under the presser
foot, the presser stepping motor will generate a specific sound during origin retrieval. It should be
noted that this phenomenon is not a fault.
❷
❸
❶ A
4-3-2. Micro-lifter function
Sewing while lifting the presser foot by very small amount is enabled by inputting a negative value on the
panel.
* Refer to the table shown below for a rough indication of the relation among the value input on the panel,
the presser foot height and the presser foot pressure.
Input value on the panel Presser foot height
Presser foot pressure
(Reference)
0
0 mm
Approx. 80 N (8 kg)
-20
Approx. 5 mm
Approx. 140 N (14 kg)
*1 The presser foot height 0 mm means the state the sole of presser foot comes in contact with the top surface of
throat plate.
*2 The presser foot pressure varies when the presser foot or the throat plate is changed.
*3 Range of input values on the panel is from -20 to 200.
