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To check:
1 Set the upper feed adjusting dial at “0”.
Remove the belt cover and base cover (see pages 1 and 3).
2. Turn the power switch on and select ( ) stitch.
3. Press the needle up/down button twice to raise the needle,
and the upper feed dog position will be initialized.
Press the presser foot lifter button to lower the presser foot.
4. Check if the clearance between the upper feed link shaft
and upper feed lower shaft is 2.5 mm.
If not, adjust it as foloowes.
Mechanical Adjustment
Upper feed dog (1)
The clearance between the upper feed link shaft and upper feed lower shaft should be 2.5 mm when the upper feed adjusting
dial is set to "0".
Upper feed adjusting dial
Drop feed key
Needle up/down button
Presser foot lifter button
2.5 mm
Upper feed link shaft
Upper feed lower shaft
View from the belt cover side
Upper feed lower
shaft rear arm
Upper feed link shaft
Upper feed lower shaft
Upper feed adjusting arm (1)
Setscrew
View from the bottom
To adjust:
Loosen the setscrew (use an Allen wrench of 2 mm width
across flats) on the upper feed adjusting arm (1).
Adjust the clearance between the upper feed link shaft and
upper feed lower shaft to 2.5 mm.