Adjusting The Amount Of Alternate Vertical Movement - JUKI DP-2100 Engineer's Manual

(9) Adjusting the amount of alternate vertical movement

1. State of feed foot and presser foot at the time of delivery
Cam rod position
Amount of alternate vertical movement of feed foot
Clearance at lower dead point of feed foot
Amount of alternate vertival movement of presser foot
Clearance at lower dead point of presser foot
2. Relation between amount of alternate vertical movement and max. sewing speed
Amount of vertical
movement of feed foot (mm)
Amount of vertica
movement of presser foot (mm)
Max. sewing speed (rpm)
(Caution) When changing the amount of alternate vertical movement, change max. sewing speed.
When it is not changed, components breakage or damage occurs and the life of the
machine is excessively shortened.
6
2
1
Standard Adjustment
Less than 0.3
2.7
3,500
Hole A
3
Top feed arm lowest position
0.2 to 0.3 mm
0.1mm
Approximately 2.7 mm
0.1mm
1 2
Up to 1.5
1.5
2,600
5
4
− 14 −
3 4
Up to 2.5 Up to 3.5
2.5 3.5
2,000 1,600
4
Be careful of parallel