Changing The Amount Of Alternate Vertical Movement Of Walkingfoot And Presser Foot - JUKI Sewing Machine Instruction Manual

24-2 Changing the amount of alternate vertical movement of walking
foot and presser foot
WarNING :
turn o�� the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
(1) State of walking foot and presser foot at the time of delivery
Amount of alternate vertical movement of walking foot
Clearance at lower dead point of walking foot
Amount of alternate vertical 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 walking foot (mm)
Amount of vertical movement of presser foot (mm)
Max. sewing speed (sti/min)
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.
Cam rod position Top feed arm lowest position
0.2 to 0.3 mm
Approximately 2.7 mm
1 2
Up to
Less than 0.3
1.5
2.7 1.5
3500 2600
172
– –
0.1mm
0.1mm
3 4
Up to Up to
2.5 3.5
2.5 3.5
2000 1600