Adjusting The Knife Unit - JUKI DDL-9000C-S Series Engineer's Manual

(9) Adjusting the thread trimming unit
WARNING :
Be sure to turn the power OFF before the following work in order to prevent personal injury due to
unintentional starting of the sewing machine.

4) Adjusting the knife unit

1. For checking the knife unit
❶
Standby state of the knife
Far end of the hole in
loop spreading knife
❶ aligns with the tip of
thread trimming knife ❷
❶
Aligning state of salient portion of loop
spreading knife and thread trimming knife
Standard adjustment
❷
Fig.1
❶
❷
A
A
Fig.2
– 56 –
The distance from center of
needle A to the tip of loop
spreading knife ❶
S type : 5.5 to 6.5 mm
H type : 5.0 to 6.0 mm
❶
❷
❶
2.5 to 3mm
State of engagement of knife
A
❷
❷
A
Fig.3