Singer 160 User manual
Service Manual
104 73 23-26
26 Sep 2011
160 model
Page 2/41
Original issue
Sept.2010
Service Manual
160
Model
INDEX
1. Disassembling of covers
2. Test mode
3. Adjustment of feed dog height
4. Needle bar height
5. Needle threader height
6. Presser foot height and direction
7. Needle position at zigzag stitching
8. Clearance between needle and shuttle
9. Needle timing to feed dog
10. Needle timing to shuttle hook
11. Adjustment of take-up lever timing to needle
12. Adjustment of meshing position of gears for thread take-up
lever
13. Adjustment of thread tension
14. Tension of timing belt
15. Motor belt tension
16. Retaining bracket for bobbin case
17. Origin point positioning of zigzag bight
18. Stitch length
19. Needle stop at highest position
20. Electronic component area
*ACPowerboard
*CPU board-1
*Switch board-1
21. Wiring diagram
Page 3/41
Original issue
Sept.2010
Service Manual
160
Model
1. Disassembling of covers
(1) Face cover side
Remove screw A.
Remove screw Ｂ.
A
B
Page 4/41
Original issue
Sept.2010
Service Manual
160
Model
1. Disassembling of covers –continued--
(2) Bottom side
Remove a screw on front cover.
Remove a screw inside of access
hole of front cover.
Don’t remove screws above and
below the access hole
Remove cap for fine adjustment on assembly.
Page 5/41
Original issue
Sept.2010
Service Manual
160
Model
1. Disassembling of covers –continued--
(3) Back cover side
Remove two self-tapping screws.
Remove two self-tapping screws
Remove self-tapping screw.
Page 6/41
Original issue
Sept.2010
Service Manual
160
Model
1. Disassembling of covers –continued--
Pre-tension unit is removed.
(4) Front cover side
Loosen screw A.
A
Remove screws (A & B) on pre-tension unit.
B A B
Page 7/41
Original issue
Sept.2010
Service Manual
160
Model
1. Disassembling of covers –continued--
Open back and front covers.
Push up front cover to open by inserting
small screw driver between front and
back covers.
Open mating portion of front and back
covers by pushing back cover with small
screw driver.
Open
front cover with
smallscrewdriver.
Remove front cover.
Page 8/41
Original issue
Sept.2010
Service Manual
160
Model
2. Test mode with warning function deactivated
This test mode is used to operate machine without threading, while sensors for
thread breakage, presser foot lever and bobbin thread are deactivated.
1. While pushing three switch buttons 1, 3 & 5 at control panel at the same time,
turn on sewing machine.
２．Release three switch buttons after beep sound is heard.
Machine runs with any desired button selected by using foot control.
1 3 5
Page 9/41
Original issue
Sept.2010
Service Manual
160
Model
2. Test mode -- continued --
1. Push bobbin winder to the right
2. Push and hold reverse switch
in place.
3. Turn on power switch.
4. Release bobbin winder while
pushing reverse switch, just after
power switch is turned on.
Note: See next page
Page 10/41
Original issue
Sept.2010
Service Manual
160
Model
2. Test mode -- continued --
Release bobbin winder by the time when LED is lit at extreme right line.
After entering test mode, the machine beeps and LED turns off.
Test mode
*Test mode 1 (Button ①)
Maximum zigzag width at 7 mm
No feed
*Test mode 2 (Button ②)
2.4 mm feed
Needle in the center position
*Test mode 3 (Button ③)
For aging (shaking down)
Zigzag width at 7 mm
2.4 mm feed forward and backward
Note: use foot controller for running
machine.
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