Brother Z-8550A Manuale Proprietario

 

 

Z-8550A, 8560A 

79 

When sewing stretch materials and materials with long pile, 
you can make minute adjustments to the floating amount for 
the presser foot (1) in accordance with the material. 

1. Turn the sewing machine pulley by hand to move the 

feed dog (2) below the needle plate (3). 

2.  Use the lifting lever to lower the presser foot (1). 
3.  Loosen the nut (4). 
4. Use a hexagon wrench to turn the adjusting screw (5) to 

adjust the floating amount. 
• To raise the presser foot (1) …Turn the adjusting 

screw (5) clockwise. 

• To lower the presser foot (1) ...Turn the adjusting 

screw (5) counterclockwise. 

5.  Tighten the nut (4). 

*  After making the adjustment, sew a piece of material to 

check the floating amount. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 

If the machine starts running at low speed when your foot is 
simply resting on the treadle, or if the treadle pressure is felt 
to be too weak, adjust the position (a to c) at which the 
treadle spring (1) is hooked onto the treadle lever (2). 

* a is the weakest position, and it becomes gradually 

stronger at b and c respectively. 

 

1.  Loosen the nut (3) and turn the bolt (4). 

*  When the bolt (4) is tightened, the treadle operation 

becomes heavier, and when it is loosened, the 
operation becomes lighter. 

2.  Tighten the nut (3). 

 

Remove the nut (5), and then move the connecting rod joint 
(6) from the position in figure A to the position in figure B. 
The treadle stroke will then be increased by approximately 
30 %. 
At this time, the treadle forward and backward depression 
sensitivity will change, so readjust if necessary. 

 
 
 
 

3807M

3533M

Higher 

Lower

3534M

2302M

Floating amount