Adjustment Of Drawing Amount Of Upper Feed Roller - JUKI MS-3580 Serie Manual De Instrucciones

8. Adjustment of drawing amount of upper feed roller

WARNING :
Perform the work after turning OFF the power to prevent accidents caused by the abrupt start of the
sewing machine.
Loosen the nut 5 , tighten the nut 5 after adjusting the clutch connecting rod 4 vertically.
™ When the clutch connecting rod 4 is raised, the amount of draw for the material cloth is increased.
™ When the clutch connecting rod 4 is lowered, the amount of draw for the material cloth is decreased.
1. If the amount of draw for the upper feed roller 1 is too much in conjunction with the sewing feed
amount, the number of stitches is increased.
2. If the amount of draw for the upper feed roller 1 is too less, sewing problem occurs and this is a
cause of feed error. In particular, this problem occurs around the hinged section.
1
4
2
Vertical direction
3
(1) Drawing amount of upper feed roller
The standard amount of draw for the upper feed roller 1 is
defi ned to cause a slight pulling force for the sewing length
(8 stitches/inch) of the feed dog.
The clutch connecting lever 2 and the clutch set 3 are
connected. The amount of draw for the material cloth
can be changed by moving the clutch connecting rod 4
vertically.
− 19 −
5
2
4
3