− 40 −
(28) Clearance provided between the main shaft handwheel and the stator
Standard Adjustment
1 mm
1
Pulley cover
(29) Position of the automatic reverse stitching magnet (Excluding A-SR)
Standard Adjustment
(30) Adjusting the thread tension releasing solenoid (Thread trimmer type only)
Standard Adjustment
™ Max. feed amount
LZ-2290A-SS, A-DS = 5 mm
LZ-2290A-SU, A-DU = 2.5 mm
Standard delivery : 2 mm
™ Max. reverse feed amount
LZ-2290A-SS, A-DS = 4 mm
LZ-2290A-SU, A-DU = 2.5 mm
Standard delivery : 2 mm
™ Presser plate of the thread tension releaser 1 should be engaged with roll pin 2 and auxiliary pin
of the thread tension releaser 3.
™ When the solenoid is pushed by fingers in the direction A, it should move smoothly. Also, when
the solenoid is released, it should smoothly return to its home position.
™ When the solenoid is pushed in the direction A, the tension disk should rise.
Return spring
(Inside the
machine arm)
1
A
2
4
3
1
6
4
5
2
e
4
Apply grease
3