Duerkopp Adler 609 Service Instructions Manual page 35

No. Subject
Thread trimmer
13.
14.
Drive
15. Knife-carrier drive and
thread-pulling knife
16. Hook shaft and knife
carrier
Thread trimmer
17.
18. Control cam
19. Counter knife
20.
Thread guiding sheet
Bobbin winder
21.
22.
Bobbin winder function
23.
Bobbin fill quantity
Chap. Correct setting
7.
7.2 Play (clearance) for the tie-rod
crank = 0.1 mm.
7.3 The edge of the counter knife overlaps the
cutting edge of the thread-pulling knife by
about 1 mm, at the end of the cutting
process.
The tip of the thread-pulling knife is located
axially at the middle of the needle.
7.4 There is smooth operation with minimal
axial backlash.
7.
7.5 When the thread lever is at its highest
position, the thread must be cut.
The control cam should not touch the
crank during the sewing process.
7.6 The cutting edge of the counter knife
must overlap the cutting edge of the
- thread-pulling knife by about 0.5 mm
7.8 The thread must be securely cut with
the least possible pressure.
7.9 Lower thread light, upper thread does
not become jammed.
8.
8.1 When the trigger level is swivelled in,
the driver wheel drives the bobbin
winder wheel.
8.2 The bobbin winder switches off
automatically when the bobbin is
filled up to approx. 0.5 mm below the
edge of the bobbin.
Adjustment
Set the play/slack.
Rotate the knife
carrier.
Move the knife
carrier axially.
Set the setting
collars and the drive
elements tightly
together.
Turn the control cam.
Align the counter
knife.
Adjust the cutting
pressure with the set
screws.
Re-sharpen if
necessary.
Move the thread
guiding sheet.
Move the driver
wheel on the shaft.
Small adjustments:
Adjust the trigger
lever using the
adjusting screw.
Large adjustments:
Adjust (turn) the cam.
31
GB