43
80%
○
7) Presser Foot Height
Turn the pulley to adjust the distance between the presser foot
bottom and the sewing fabric to be 0.5mm (thickness of the
thread used) when the needle bar is at the lowest position.
6) Adjustment of Presser Foot Up/Down
Stroke
A. Disassemble the face plate.
B. Turn the pulley to locate the needle bar at the lowest
position.
C. Loosen the hinge screw
①
and turn it
①
in the A direction.
Then stroke grows larger.
D. When the punched mark
③
is on the right side of the outer
circle of the washer
②
, stroke becomes 4mm. When the
punched mark
④
meets the outer circle, stroke becomes
7mm. (Default value is 4mm.)
③
④
②
①
[ Fig. 56]
[ Fig. 57 ]
Winding the bobbin off-center or uneven as shown below can cause thread breaks, skipped stitches,
or thread tangles.
Caution
Too tight tension of the bobbin winding can block smooth pulling of the thread and cause thread
breaks or short tails.
Caution
0.5mm