Adjusting The Stitch Length - JUKI DLN-6390 Manual De Instrucciones

4. Adjusting the stitch length

WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
2
1
4
6
8
1. Be sure to adjust the scale of feed dial to the needle feed amount corresponding to the cloth
feed amount of the selected gears. If the cloth feed amount is different from the needle feed
amount, unexpected trouble will be caused.
2. As a matter of convenience, the scale of stitch length dial is indicated up to "0". However, the
minimum stitch length of this sewing machine is 2.1 mm. Do not set the scale of the feed dial to
less than 2.1 mm.
Simultaneously perform procedures 1 and 2 below to
change the stitch length.
1 Change of needle feed amount : Turning of the feed dial
2 Change of cloth feed amount
Be sure to adjust the scale of the feed dial to the stitch
length which has been set with the cloth feed amount
adjusting gear for operation.
Perform the procedures below to change the stitch length.
<Change of cloth feed amount>
1) Remove screw 1 and remove cover 2 .
＊ Remove cover 2 in the rear direction.
2) Loosen screw 3 and remove U-Gear 4 .
3) Loosen screw 6 and remove L-Gear 5 .
4) Select from the table below the "Gear" corresponding
3
＊ There is a pitch indication seal showing the relation
A
5) Fully push U-Gear 4 corresponding to the stitch length to
5
6) In the state that the presser foot is lowered, adjust
7
<Change of needle feed amount>
7) Adjust the scale of feed dial 7 adjusted to the stitch
* Numerals on the
scale denote mm.
＊ When stitch length is changed to a small one, needle
– 23 –
to the stitch length to be changed.
between the gear and the stitch length in the accessory
box. Paste it at the position you desire and refer to it
when replacing the gear.
be changed in the direction A until the end is reached, and
tighten screw 3 . (Tightening torque : 3 to 5 N·m)
L-Gear 5 corresponding to the stitch length to be
changed to the end plane of U-Gear 4 to determine
the position, and tighten screw 6 to fi x it.
(Tightening torque : 3 to 5 N·m)
When the position of L-Gear 5 in terms of
U-Gear 4 is slipped, unexpected trouble
will be caused. So, be careful.
length corresponding to a set of gears (U-Gear and
L-Gear) which has been replaced to dot 8 engraved
on the sewing machine.
thread may slip off the needle at the start of sewing. In
this case, change the setting of SC-921 from "soft-start
1st stitch" to "2nd stitch". For the details, refer to the
Instruction Manual for SC-921.
: Replacement of the feed
amount adjusting gear