Adjusting The Presser Bar Pressure; Adjustment Of The Bobbin Presser Unit - JUKI LBH-1790AN Instruction Manual

3. Adjusting the presser bar pressure

WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the fol-
lowing work after turning the power off and ascertaining that the motor is at rest.
The presser bar pressure should be set on a pattern-by-pattern basis.
1) Set the mode to the input mode.
Under the input mode where SET READY LED 
goes out, change of the pattern is enabled.
If the current mode is the sewing mode, press
READY key ❷
to the input mode.
2) Invoke "S090 Presser bar pressure"
Press EDIT key ❽
LECT key ❻
to select presser bar pressure A.
Increasing the set value of S090 will increase the
presser bar pressure to help prevent puckering.

4. Adjustment of the bobbin presser unit

WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the fol-
lowing work after turning the power off and ascertaining that the motor is at rest.
9.5 to 15 mm
❶
❸
to change over the mode
. Then, press ITEM SE-
❷
– 70 –
A
 ❷
Loosen nut ❶ and adjust the position with stopper
spring ❷ so that the distance from the front end of
machine bed to bobbin presser ❸ is 9.5 to 15 mm
when the sewing machine stops. Then tighten nut ❷ .
❽ ❻ ❼