52
PFM-4000
Part Number 6Z8303
Timing Procedures
Setting the Walking Foot Mechanism
The walking foot design on the PFM-4000 Flange Machine combines the lower
main feed and the differential feed into one unit. It has a presser foot and a top
feed. The proper timing of these parts is essential to the performance of the
sewing head. Refer to
, and
. Time the walking foot
mechanism in the following order:
1
Adjust the presser foot front or back
2
Set the top feed and presser foot height
3
Adjust the high-speed spring system
4
Set the lower main feed height
Figure 7.8
Presser foot and top feed
Adjusting the Presser Foot Front or Back
For correct spacing of the needles and correct spacing of the spreader when it
passes behind the presser foot extension, you may need to adjust the presser foot.
To adjust the presser foot:
1
Rotate the handwheel so that the spreader is positioned as closely behind the
presser foot as possible without contacting it.
2
Rotate the handwheel so that the needles move in a downward motion
through the slots in the presser foot.
3
Watch the needle movement closely and verify that there is clearance from
the front of the needle bars to the back of the presser foot extension arm.
4
If you must make an adjustment from front to back, go to the back of the
sewing head.
top feed