– 45 –
4-15. Adjusting the disk presser pressure
1) Adjust the disk presser air cylinder pressure
regulation valve
❶
. Pull up nut
❷
. Then, turn
the nut clockwise to increase the disk presser
pressure or turn it counterclockwise to decrease
it. The air pressure has been factory-set to 0.15
MPa at the time of shipment. Adjust it appropri-
ately while checking the actual sewing state.
2) Changing the disk presser
Check the actual sewing operation. Use the disk
presser or the plastic disk presser according to
the condition of actual sewing operation.
A
Disk presser (factory-attached at the time of
shipment)
B
Plastic disk presser
When changing the disk presser with the plastic
disk presser or vice versa, try to position the
disk presser so that its bottom surface is in
parallel with the hook cover. Adjust the height of
the disk presser according to the actual material
thickness (i.e., height) while taking care not to
allow the disk pressers to come in contact with
the intermediate presser.
❶
❶
❷
❷
A
A
B
B
