JUKI LK-1903A-305 Instruction Manual page 26

(3) When the type of lower plate 1 that materal does not come n close contact wth throat plate 2 s used,
needle thread on the wrong sde of materal may be rolled n the seams regardless of needle thread play
or sewng length.
(4) For LK-903A (button sewng), the thread clamp s set to the moton prohbted n the state of standard
delvery due to the aforementoned (2) and (3). For (memory swtch No. 35) wth cross-over sttch (
etc.) or X shape (
ths case, t s recommended to use the thread clamp.
(5) When the thread clamp s used, and bobbn thread at the sewng start appears on the rght sde of materal,
reduce thread tenson at the sewng start (2 to 3 sttches) and bobbn thread becomes less conspcuous.
[Example of settng] Tenson of  to 2 sttches at the sewng start s "20" when sewng tenson settng s "35".
* For the settng of tenson at the sewng start, refer to
OPERATION OF THE SEWING MACHINE
1
, etc.), needle thread on the wrong sde of materal becomes easy to be rolled n. In
(ADVANCED).
(Wrong side)
2
5. Settng the pattern thread tenson of [6]
23
－ －
Needle thread
,