Upper Feed Dog Timing
(2 of 3)
(Part 1)
5.
To make an adjustment,
locate and loosen the two
hexagon set screws located
near the hand wheel and
bobbin winder assembly that
holds the upper feed upper
shaft unit in place with a 2mm
hex tool
.
4
7
4.
Using step gauge QM39401,
check the clearance between the
dual feed foot and the upper feed
dog.
The clearance should be
4mm.
4mm