QMP16SU Service Manual
| 33
Adjusting the Presser Bar Height (Internal Adjustment)
Tools: 3 mm handle hex wrench, 0. 5 mm feeler gauge
Check
When the needle bar is in its lowest position, the
sewing foot should be no higher than 0.5 mm
above the needle plate. It is permissible for the
hopping foot ring to lightly touch the needle plate.
0.5 mm feeler gauge
Â
IMPORTANT
: Check this before resetting the presser bar height in case the machine owner has
changed the foot height. Having the presser bar height and foot at the wrong height can cause
stitch problems, including skipped stitches.
Adjust if necessary
Tool: 3 mm hex wrench, 0.5 mm feeler gauge
1. Turn the hand wheel until the needle bar is at
its lowest position.
2. Place the 0.5 mm feeler gauge (part #
QM40133) under the hopping foot with the
machined edge up.
3. Loosen screw C through the machine front
cover
4. Wiggle the presser bar up or down to the
desired position.
Screw C access hole
5. Tighten screw C by pushing down lightly on the
tool blade towards the table while tightening.
This ensures that the hopping-block mechanism
contacts the appropriate lifting lever and
eccentric.
6. Confirm the ring of the foot is centered on the
needle when the screw is tightened.
Screw C
Shown with front cover off
