– 19 –
4-9. Adjusting the amount of the alternating vertical movement of the walking
foot and the presser foot
* The scale markings on the stitch dial are shown in mm.
Adjust the amount of the alternating vertical movement
of the walking foot and the presser foot using dial
❶
.
Turn the dial clockwise to increase the amount of the
alternating vertical movement of the walking foot and
the presser foot, or counterclockwise to decrease it.
❶
WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-
ing work after turning the power off and ascertaining that the motor is at rest.
4-8. Position of the counter knife and adjustment of the knife pressure
(LS-2342S-7, 2342H-7)
5 to 6 mm
[Position where the knife
pressure starts to be
developed.]
❶
❷
❸
[Initial position]
❶
❸
Both top ends
align with each
other.
1) Move the moving knife
❶
by hand to its forward
travel end.
2) Loosen setscrews
❷
in the counter knife and move
the counter knife
❸
to the right or left to adjust the
position.
3) To adjust the knife pressure, move the counter knife
❸
and adjust so that the knife pressure is devel-
oped from the position where the top end of the
moving knife is spaced 5 to 6 mm from the top end
of the counter knife.
When the moving knife moves to its back-
ward travel end, the top end of the moving
knife aligns with the top end of the counter
knife. At this time, the moving knife pro-
duces a play of 0.5 to 1 mm in the moving
direction.
Make the knife pressure as low as possible
to such an extent that both needle and bob-
bin threads can be trimmed.
