Left End Position Of The Hooked Knife - Duerkopp Adler 550-12-12 Service Instructions Manual

8.3 Left End Position of the Hooked Knife

1
2
In the left end position of the hooked knife the knife plate should not hit
the table top.
The cutting position for the needle thread and the gripping position for
the hook thread are to be set.
Caution Risk of Injury !
Turn off main switch before adjusting.
Left end position
–
Bring the needle bar in the high position.
–
Unhook the tension spring 4.
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Manually move the knife operating bar 1 to the right.
The knife plate should hit the table top.
–
Set the stop 3 to lever 5 and screw tight.
–
Hook the tension spring 4 in again.
Cutting and gripping position
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Bring the needle bar in its high position.
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Unhook the tension spring 4.
–
Loosen screws 2 and set the hooked knife to the left.
Move the knife operating bar 1 by hand.
During travel to the left end position the lower thread and the
thread of the upper thread loop lying at the back of the hook should
jump in front of the tip of the hooked knife.
–
Align the hooked knife sideways and tighten screws 2.
Move the knife operating bar 1 by hand.
With the smallest and the greatest stitch length the hooked knife
should lead only the lower thread and the thread of the upper
thread loop lying at the back of the hook to the counter knife.
–
Hook tension spring 4 in again.
3
4
5
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