Singer 4411, 4423, 4443, 4452, 5511 Service Manual

4411-4423-4432-4443-4452

5511-5523-5532-5554

44S-85SCH

Service Manual

104 73 14-26

2014-02-24

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CONTENTS
1. Namesof principalparts .............................................................................................................	2
2. Removingmethodsof externalparts
2-1 Sewingtable ...........................................................................................................................	3
2-2 Faceplate ...............................................................................................................................	3
2-3 Basecover ..............................................................................................................................	3
2-4 Free arm base .........................................................................................................................	3
2-5 Free arm slab .........................................................................................................................	4
2-6Arm top cover........................................................................................................................	4
2-7 Backcover ..............................................................................................................................	5
2-8 Frontcover .............................................................................................................................	6
3. Adjustingmethodsof each part
3-1 Playof arm shaft ....................................................................................................................	7
3-2 Noisytake up leveradjustment ..........................................................................................	8
3-3 Needledrop positionadjustment .........................................................................................	8
3-4 Heightof presserfoot ............................................................................................................	9
3-5Needleflowatmaximumzigzagwidth ...............................................................................	10
3-6 Needlecenterpositionadjustment ....................................................................................	11
3-7Needlepositiononzigzag ...................................................................................................	12
3-8Automaticneedlethreaderadjustment .............................................................................	13
3-9 Adjustmentof feed rock shaftand feed liftingrock cam .................................................	14
3-10 Heightof needlebar ..........................................................................................................	15
3-11 Timingof needleand hook ...............................................................................................	16
3-12 Distance-needle-hook.......................................................................................................	17
3-13 Playbetweenshuttledrivershaftgear and lowershaftgear ........................................	18
3-14 Playof shuttledrivershaft ...............................................................................................	19
3-15 Feed-dogheight ................................................................................................................	20
3-16 Positionof feed-dogin relationto the needleplate(left to right) .................................	21
3-17 Upperthreadtensionadjustment ....................................................................................	22
3-18 Shuttlehooktensionadjustment .....................................................................................	23
3-19 Motorbelt tension .............................................................................................................	24
3-20 Droppointof needle .........................................................................................................	25
3-21 Forwardand reversestitchingin buttonholesewing
(feedingpitchof reverseand forwardstitchingis not even) ........................................	26
3-22 Buttonholeupperand lowerstitchingproblem .............................................................	27
3-23 Bobbinwindingproblem ..................................................................................................	28

ATTENTION

Be sure to observe the following, as they may well become causes for fire, electric-shock, injuries, and damage to parts.

-Be sure to unplug power source before engaged in disassembly, installation, adjustment.

-In case of installing please pay special care to clamp electrical cords, etc., scars to sheath, mis-circuit, etc.

-Be sure to use regular standard part in replacing.

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1. Namesof principalparts

	1	9	16	23
	2	10	17
	3	11	18	24
	4	12	19	25
				26
	5
		13		27
	6		20
	7		21
	8		22

14

29

15

30

28

1.	Thread tension dial	16.	Horizontal spool pin
2.	Presser foot pressure adjustment	17.	Bobbin winding spindle
3.	Thread take-up lever	18.	Hole for second spool pin
4.	Reverse sewing lever	19.	Handwheel
5.	Thread cutter	20.	Buttonhole stitch balance adjustment slot
6.	Presser foot	21.	Power and light switch
7.	Needle plate cover	22.	Main plug socket
8.	Removable extension table/ accessory storage	23.	Bobbin thread guide
9.	Three needle position dial	24.	Upper thread guide
10.	Bobbin stopper	25.	Face plate
11.	Stitch width dial	26.	Handle
12.	Stitch length dial	27.	Presser foot lifter
13.	Pattern selector dial	28.	Drop feed control
14.	Automatic threader (not on all model)	29.	Foot speed control
15.	One step buttonhole lever (not on all model)	30.	Power cord

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2. Removingmethodsof externalparts

2-1 Sewingtable

Keep the snap-in sewing table horizontal, and pull it in the direction of the arrow. (1)

2-2 Faceplate

-Remove the operation cover (a).

-Loosen the screw (b) and remove the face plate. (2)

2-3 Base cover

-Lay down machine.

-Remove the screws (c, d, e, f, g, h). (3)

-Remove the base cover.

2-4 Freearm base

Remove the screws (i, j) and remove the free arm base. (4)

Basecover

Free arm base

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2-5 Free arm slab

- Remove the screw (k). (5)

- Remove the free arm slab. (6)

Free arm slab

2-6 Armtop cover

Remove the screws (l, m) and remove the arm top cover. (7)

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2-7 Backcover

- Remove the screws (n, o). (9)

- Remove the screw (p). (10)

- Remove the screw (q). (11)

- Remove the back cover. (12)

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2-8 Frontcover

-Remove the screw (r) which deeply inside the machine. (13)

- Loosen the screw (s) about 3mm. (14)

-Remove the pattern select dial (t, u) and remove front cover following direction of arrow. (15)

u

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3. Adjustingmethodsof each part

3-1 Playof arm shaft

- Remove the face plate, arm top cover.

- Loosen the screws (a, b) of arm shaft collar

(d). (1)

- Pull the hand wheel to the right. (2)

- Push the arm shaft collar (d) to right tightly against arm shaft bushing (c), and then fasten and secure the screws (a, b). (1)

- Be sure proper distance between arm shaft collar and arm shaft bushing. (1)

- Be sure arm shaft operates smoothly after adjustment.

- Arm shaft collar and arm shaft bushing being too tightly closed might cause insufficient operation of arm shaft.

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3-2 Noisytake up leveradjustment

-Remove the face plate and front cover.

-Turn around hand wheel, check noisy and movement.

-Remove the screw (a), push take up lever support (b) right to proper location, tight the screw (a). (1)

-If adjustment is too tight, it will be difficult to move during turn around hand wheel.

-If adjustment is too loose, it will be made noisy during turn around hand wheel.

3-3 Needledrop positionadjustment

-Remove the face plate.

-Set the pattern selector dial to " " or " ". Turn the stitch width dial to "0".

-Loosen the screw (a) of needle bar supporter. (1)

-Turn needle bar supporter (b) forward / backward to adjust needle. (1)

Backward (↑) to move needle forward Forward (↓) to move needle backward

-Set needle position above center of needle plate and fasten the screw (a). (1)

*The space between needle and the tip of the shuttle hook holder should be 0.05~0.10 mm.

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