GC0303D

DIRECT-DRIVE AUTO-LUBRICATION UPPER &

LOWER FEED LOCKSTITCH SEWING MACHINE

GC0303DCX

DIRECT-DRIVE AUTO-LUBRICATION UPPER & LOWER FEED

LOCKSTITCH SEWING MACHINE WITH THICK THREAD

OPERATION INSTRUCTION / PARTS MANUAL

Please don't adjust and repair the machine by non-professionals,except adjusting stitch.

Specifications subject to change without notice

TYPICAL SEWING MACHINE WANPING MACHINERY CO.,LTD.

ADD: WANPING TOWN, WUJIANG CITY, JIANGSU

PROVINCE, CHINA

TEL: +86-512-63391278

FAX: +86-512-63391371

POST. CODE: 215223

Http://www.typicalwpchina.com

E-mail:[email protected]

2012.4

CONTENTS

Operation Instruction

1 、 Brief introduction ………………………………………………………………………………………………………… 1

2 、 Machine specification …………………………………………………………………………………………………… 1

3 、 Installing the oil pan and safety switch magnet ……………………………………………………………………… 1

4 、 Installing the machine head ……………………………………………………………………………………………… 2

5 、 Installing the knee lifter assy.

…………………………………………………………………………………………… 2

6 、 Adjusting the knee lifter ………………………………………………………………………………………………… 3

7 、 Lubrication ………………………………………………………………………………………………………………… 3

8 、 Test operation …………………………………………………………………………………………………………… 4

9 、 Installing the needle ……………………………………………………………………………………………………… 5

10 、 Removing the bobbin case …………………………………………………………………………………………… 5

11 、 Winding the bobbin thread …………………………………………………………………………………………… 5

12 、 Threading the bobbin thread …………………………………………………………………………………………… 6

13 、 Threading the needle thread …………………………………………………………………………………………… 6

14 、 Adjusting the stitch length ……………………………………………………………………………………………… 7

15 、 Sewing and backtacking ……………………………………………………………………………………………… 7

16 、 Adjusting the thread tension …………………………………………………………………………………………… 8

17 、 Adjusting the presser foot pressure …………………………………………………………………………………… 8

18 、 Adjusting the thread tension spring …………………………………………………………………………………… 9

19 、 Adjusting the upper thread guide …………………………………………………………………………………… 10

20 、 Adjusting the presser foot height ………………………………………………………………………………… 10

21 、 Adjusting the feed dog height ………………………………………………………………………………………… 10

22 、 Adjusting the feed dog angle ………………………………………………………………………………………… 11

23 、 Adjusting the difference of stitch length between the forward and backtacking ………………………………… 11

24 、 Adjusting the tension release ………………………………………………………………………………………… 11

25 、 Adjusting the timing of needle and feed mechanism ……………………………………………………………… 12

26 、 Adjusting the rotary hook lubrication amount ……………………………………………………………………… 12

27 、 Adjusting the height of needle bar and the timing with hook ..........................................................................13

Parts Manual

.....................................................................................................................................13

1、 Casting mechanism ……………………………………………………………………………………………………………16～17

2、 Needle bar and thread take-up mechanism ………………………………………………………………………………18～19

3、 Presser foot mechanism ………………………………………………………………………………………………………20～21

4、 Feed mechanism ………………………………………………………………………………………………………………22～25

5、 Upper feed mechanism ………………………………………………………………………………………………………26～27

6、 Hook mechanism ………………………………………………………………………………………………………………28～29

7、 Lubrication mechanism ………………………………………………………………………………………………………30～31

8、 Accessories …………………………………………………………………………………………………………………… 32～33

Operation Instruction

1. Brief introduction

This machine is designed with link type feed mechanism and link lever thread take-up mechanism and full lubrication by pump. It's suitable for sewing leather, canvas and other heavy weight materials, such as suitcase, car seat, tent, sofa, etc.

3

1

2

2. Main specifications

Model

Applications

Max sewing speed

Max stitch length

Needle bar stroke

Lifting amount of presser feet

Needle

Presser foot By hand lifting height By knee

GC0303D GC0303DCX

Medium & heavy weight materials

2000 s.p.m

1800 s.p.m

8mm

37mm

12mm

3.5-5.5mm

DP×17 23# DP×17 25#

8mm

16mm

Large lubrication hook

Hook

Lubrication

Motor output

Automatic lubrication

750W

4

5

6

3. Installing the oil pan and safety

switch magnet (Fig.1)

1.Insert the two head cushion ② into the front corners of the oil pan ① ;

2.Insert the two head cushion ③ into the back corners of the oil pan ① ;

3.Place the oil pan ④ into the cutouts of table;

4.Insert the two rubber cushion ⑤ into the notches of table.

5.Insert the safety switch magnet ⑥ into the hole of the table near oil pan cutout.

1

-1-

2

5

2

3

2

1

4. Installing the machine head (Fig.2)

1.Insert the knee lifter lifting bar ① .

3

4

2.Insert the two hinges ② into the holes in the machine bed.

3.Clamp the two hinges onto the rubber cushions ③ in the work table, and the place the machine head onto the head cushions ④ which are on the top of the oil pan corners.

4.Tap the rest bar ⑤ into the table hole.

NOTE : Tap the rest bar securely into the table hole, if not, the machine head will not be safe when it is tilted back.

3

2

3

5. Installing the knee lifter assy. (Fig.3)

Insert the knee lifter assy. ① into the shaft ② under the oil pan, and slightly tight the screw ③ .

1

-2-

6. Adjusting knee lifter(Fig.4)

1.Lower the presser foot ② by turning the presser foot bar lifter ① .

2.Loosen the nut ③ .

3.Turn the screw ⑥ to adjust the bracket ⑤ to

2mm play.

4.Securely tighten the nut ③ .

5.Loosen the nut ⑦ .

6.Turn the screw ⑧ until the distance between the end of the screw and bracket is approximately 8mm.

7.Turn the adjusting screw ⑧ to adjust, so that the presser foot is at the desired position within a distance of 16mm above the needle plate when the knee lifter plate ④ is fully pressed.

8.After adjustment, tighten the nut ⑦ .

7. Lubrication(Fig.5)

1.Oil amount

Please fill the oil according to the mark indicated on the oil pan. Mark (A) means the highest position. Mark (B) means the lowest position. If the oil amount is lower than the Mark (B), oil will not be pumped and machine will be jammed.

2.Fill the oil

Please fill the 18# sewing oil into the oil pan until to the Mark (A)

3.Change the oil

① Uninstall the screw (C), and drain out the used oil

② Clean the oil pan, and tighten the screw (C ), fill the fresh oil again according the requirement.

1

2

2

3

16mm

A B

O

H

L

6

7

8mm

C

4

4

8

2mm

5

5

-3-

6

A C

8. Test operation(Fig.6)

Carry out the test operation when start up a new sewing machine for the first time, or restart after a long period of non-use.

Remove the rubber cap (A) on the top of the arm and face plate, fully lubricate the parts showed by the arrows.

Install the face plate again, lift the presser foot and operate the machine at a lower speed of

1000-1500spm, and observe the oil running through the oil gauge window.

After one month, then the speed can be increased according to the different sewing operation.

-4-

9. Installing the needle (Fig.7)

1.Turn the machine pulley to move the needle bar ① to its highest position;

2.Loosen the screw ②

3.Insert the needle ③ in a straight line as far as it will go, making sure that the long groove on the needle is at the left, and then securely tighten the screw ②

1

2

3 Groove leftward

7

10. Removing the bobbin case(Fig.8)

1.Turn the machine pulley to lift the needle bar to its highest position. Pull the latch ① of the bobbin case upward and then put the bobbin into the bobbin case, finally insert the complete bobbin case with bobbin into the hook shaft.

2.To remove the bobbin case, pull the latch and draw the bobbin case out of the hook.

1

Long groove in needle

Front

8

2

11. Winding the bobbin thread (Fig.9)

1.Turn the power on;

2.Place the bobbin ① onto the bobbin winder shaft ② ;

3.Wind the thread several circles around the bobbin in the direction indicated by arrow;

4.Push down the bobbin presser arm ③ ;

5.Lift the presser foot;

6.Depress the treadle, the winding operation will start;

7.Once finished, the bobbin presser arm ③ will recover automatically.

＊ If the thread winding is not neat and even, loosen the screw ④ to adjust the position of bobbin winder base.

＊ Turn the screw ⑥ to adjust the bobbin winding amount

● Tighten the screw to increase the winding amount;

● Loosen the screw to decrease the winding a mount.

Note:

The proper winding amount should be around

80% of the bobbin capacity.

-5-

6

3

80%

Standard thread winding amount

4

2

9

10

2

3

1

12. Threading the bobbin thread (Fig.10)

1.Turn the machine pulley to lift the needle to its highest position;

2.The bobbin thread should be right twist, place the bobbin into the bobbin case;

3.Pass the thread through the slot ① and spring plate ② , and finally pull it out of the notch ③ ;

4.Check that the bobbin should turn clockwise if the thread is pulled;

5.Hold the latch ④ , and place the bobbin case in the hook.

4

13. Threading the needle thread (Fig.11)

Raise the thread take-up lever to its highest position. This will make threading easier and will prevent the thread from coming out at the sewing start.

11

1

2

1

10

4

3

5

11

9

8

7

6

Threading as below if the resistance of thread is large

4

3

5

12

13

14

50mm thread trails

50mm

-6-

11

9

8

7

6

14. Adjusting the stitch length (Fig.12)

While press the stopper ② , turn the stitch length dial ① to make the number on the dial align with the mark on the stopper ② . The number is the stitch length in mm.

＊ The larger the number, the longer the stitch length will be.

＊ When turn the dial from a larger setting to a smaller setting, it will be easy to turn if the reverse lever ③ is pressed down.

1

3

PUSH

I

4

2

3

5

6

8

7

15. Sewing and backtacking (Fig.13)

1.Turn the power on;

2.Depress the treadle to start sewing.

When the reverse lever ① is pressed or the backtacking button is on during sewing, the feed will be reversed. After release, the feed will recover to normal.

1

2

PUSH

I

3

4

6

5

8

7

2

12

13

2

2

-7-

16. Adjusting the thread tension (Fig.14)

Normal stitch

14

Needle thread

Bobbin thread

● Stitch seam when needle thread tension is too weak

●

● increase the needle thread tension decrease the bobbin thread tension

● Stitch seam when needle thread tension is too strong

●

● decrease the needle thread tension increase the bobbin thread tension

2

Bobbin thread

1

Decrease increase

<Bobbin thread tension>

Adjust by turning the screw ① until the bobbin case drops gently by its own weight while the thread end coming out of the bobbin case is held.

<Needle thread tension>

After adjust the bobbin thread tension, adjust the needle thread tension so that a good, even stitch seam is obtained.

1.Lower the presser foot;

2.Adjust by turning the thread tension nut ② .

Decrease

1

5

2

Increase

Decrease

4

3

Increase

15

17. Adjusting the presser foot pressure

(Fig.15)

<Adjusting the presser foot pressure>

1.Loosen the lock nut ① ;

2.Turn the adjusting screw ② to adjust the pressure of presser foot, if it's not enough, please turn the screw ⑤ to increase the pressure.

＊ The pressure should be as week as possible, but strong enough so that the material doesn't slip.

3. Tighten the nut ① .

<Adjusting the walking foot presser>

4. Loosen the nut ③ ;

5. Turn the screw ④ clockwise to increase the pressure, on the contrary, turn the screw ④ counterclockwise to decrease the pressure;

6. Tighten the nut ③ .

-8-

18. Adjusting the thread tension spring

(Fig. 16)

★ The standard position of the thread tension spring ① is 5-8mm above the upper surface of the thread guide ③ when the presser foot ② is lowered.

1.Lower the presser foot ② ;

2.Loosen the screw ④ ;

3.Turn the thread tension bracket ⑤ to adjust the spring position;

4.Tighten the screw ④ .

★ The standard tension of the spring is 0.3-0.6N.

5.Push the needle thread with your finger until it is slightly higher than the thread tension bracket

⑤ and so that the upper thread is not pulled out;

6.Pull the needle thread down until the spring ① is at the same height with the upper surface of thread guide ③ , and then measure the tension of the spring.

7.Insert a screwdriver into the slot of the thread tension stud ⑥ , and turn the stud to adjust the tension of the spring ① .

Note:

If using a tension gauge ⑦ to measure the tension, take the reading from the scale on the side of the red line.

16

1

3

1

3

5 ~ 8mm

3

2

5

4

5

0.3 ~ 0.6N

0.8

0.4

0.2

0.1

(N)

6

Scale

7

-9-

17

Increase Decrease

2

1

19. Adjusting the upper thread guide

(Fig. 17)

The standard position of upper thread guide ① is where the screw ② is in the center of the adjustable range of upper thread guide.

To adjust the position, loosen the screw ② and move the thread guide.

If stitch the heavy materials, move the thread guide leftward. (To increase the thread take-up tension)

If stitch the light materials, move the thread guide rightward. (To decrease the thread take-up tension)

18

3

4

2

1

19

1

1.2mm

3

2

8mm

20. Adjusting the presser foot height

(Fig. 18)

The standard height of presser foot ① is 8mm when it is lifted by hand.

1.Loosen the screw ③ to lift the presser bar

2.Put a measurement gauge with 8mm height under the presser foot;

3.Loosen the screw ④ and adjust the height of presser foot;

4.Tighten the screw ④ .

21. Adjusting the feed dog height (Fig. 19)

1.Set the stitch length maximum, when the feed dog ① is at its highest position above the needle plate, the standard height is 1.2mm

2.Loosen the screw ② and turn the feed lifting arm ③ to adjust the height of feed dog.

-10-

22. Adjusting the feed dog angle (Fig. 20)

The standard angle of the feed dog is: when the feed dog is at its highest position above the needle plate, the Mark on the feed bracket shaft is on the horizontal position.

1.Turn the machine pulley to lift the feed dog to its highest position;

2.Loosen the screw ⑦ ;

3.Turn the feed bracket shaft in the direction of the arrow within a range of 90 with respect to the standard angle position.

＊ In order to prevent puckering, lower the front of the feed dog (Fig. A)

＊ In order to keep the materials straight, raise the front of the feed dog (Fig. B)

4.Securely tighten the set screw ⑦ .

It's necessary to adjust the feed dog height again after this adjustment.

(Fig. A)

5

(Fig. B)

23. Adjusting the difference of stitch length between the forward and backtacking (Fig. 21)

1.Remove the back cover;

2.Loosen the screw ① and turn the connecting stud ②

＊ Turn the stud ② clockwise, the forward stitch length will be longer and the backtacking stitch length will be shorter;

＊ Turn the stud ② counterclockwise, the forward stitch length will be shorter and the backtacking stitch length will be longer;

3.Tighten the screw ① .

24. Adjusting the tension release (Fig. 22)

The opening time of the thread tension discs can be adjusted.

Remove the rubber cap on the rear of arm, and turn the screw ① , then the thread release cam

② can be moved left or right.

Move the cam rightward, the release time will be slow

Move the cam leftward, the release time will be quick.

1

Mark

7

1

Standard

Lower the front

Raise the front

2

1

2

20

21

22

-11-

23

2

24

1

4

6

6

5

A

7 8

B

A

B

25. Adjusting the timing of needle and

feed mechanism (Fig. 23)

The standard timing is when the feed dog is lowered from its highest position until it is flush with the top of the needle plate ② , and the needle eye ③ is also aligned horizontally with the surface.

Adjust by changing the phases of feed cam and eccentric wheel UD

1.Remove the rear cover

2.Turn the machine pulley in reverse direction, set the second screw ④ on the gear of upper shaft as reference mark, make the third screw

⑤ of eccentric wheel UD slightly lower than the reference mark screw ④ ;

3.Continue to turn the machine pulley, set the second screw ⑥ of eccentric wheel UD as reference mark, make the third screw ⑦ of feed cam slightly higher than the reference mark screw ⑥ .

4.If need a non-timing position, loosen the three screws of eccentric wheel UD, adjust the eccentric cam ⑧ in the direction of arrow (A) or

(B)

To increase the tension of thread, turn the eccentric cam ⑧ to direction (A)

To avoid the needle bent, turn the eccentric cam

⑧ to direction (B)

5.After adjustment, tighten all of the screws.

Oil amount

Small Big

26. Adjusting the rotary hook lubrication

amount (Fig. 24)

Tilt back the machine head, and turn the oil adjustment screw ① to adjust the hook oiling amount.

1

-12-

27. Adjusting the height of needle bar

and the timing with hook (Fig. 25)

When the needle bar ① is at its lowest position, the top reference line (A) on the needle bar should be aligned with the bottom edge of the needle bar bush ② .

1.Turn the machine pulley to lower the needle bar to its lowest position;

2.Take out the rubber cap ③ ;

3.Loosen the screw ④ , and move the needle bar

① to proper position;

4.Tighten the screw ④ ;

5.Close the rubber cap ③ .

Lift the needle bar ① from the lowest position, when the second reference line (B) on the needle bar is aligned with the bottom edge of the needle bar bush ② , the tip ⑤ of the hook should be aimed at the center of needle ⑥ .

1.Turn the machine pulley to raise the needle bar ① from its lowest position until the reference line (B) is aligned with the bottom edge of the needle bar bush ②

＊ When the needle bar moves up 2mm, the clear ance between the upper of needle hole and the hook tip should be 1.3-1.8mm

2.Loosen the screw ⑦ , and make the hook tip aimed at the center of needle ⑥ , the clearance between the hook tip and needle should be

0.05mm

3.Tighten the screw ⑦ .

3

1

B

DP X 17

2

6

5

6

0.05mm

5

28. Adjusting the oil pump (Fig. 26)

If the oil is not circled observed from the oil gauge window at a lower sewing speed, turn the oil adjustment plate ① to cover the oil hole.

1

0.5 ~ 1.0mm

2

25

1

4

A

DP × 17

1.3~1.8mm

2

7

2.0mm

26

-13-

27

3

5

6

Upward

Downward

4

A

Left

Smaller

Larger

7

8

Right

1 2

Needle plate

C

1

2

29. Adjusting the lifting amount of

presser feet (Fig. 27)

1.Vertical movement of presser foot and walking foot

★ The presser foot ① and walking foot ② move vertically one after another

★ Usually the stroke of walking foot and presser foot is same or the stroke of walking foot is slightly lower.

Place the thread take-up lever at the lowest position, and lower the presser bar lifter, loosen the screw ③ and move the upper feed lifting cam

④ .

Move it rightward to make the stroke of two feet be equal

Move it leftward to make the stroke of presser foot be smaller.

2.Adjusting the lifting amount of presser feet

Adjust the lifting amount of two feet to match the materials to be sewn.

Loosen the screw ⑤ , and move the screw upward to increase the lifting amount or move the screw downward to decrease the lifting amount.

3.Adjusting the forward/backward clearance of the two feet

To keep the front groove of presser foot not strike the rear of the walking foot, the clearance of C must be kept about 3mm.

Loosen the screw of feed arm R, and then turn the feed rock shaft ⑥ to adjust.

4.Adjusting the feed amount of walking foot

(Fig. A)

★ The standard ration of feed amount between feed dog and walking foot is 1:1

The feed amount of walking foot can be adjusted to suit for the materials to be sewn.

Loosen the nut ⑦ , and move the slide block ⑧

Upward: decrease the distance L to make the feed amount be smaller

Downward: increase the distance L to make the feed amount be larger

-14-

30.Clean (Fig. 28)

1.Raise the presser foot;

2.Remove the two screws ① and needle plate ② ;

3.Clean the feed dog with a soft brush;

4.Install the needle plate ② by two screws ① .

5.Turn the machine pulley slowly and check if the needle drops into the hole center of needle plate

★ If not

● Check if the needle is bent

● Loosen the screw ① , and reinstall the needle plate ②

6.Turn the machine pulley and lift the needle above the needle plate, check if the needle tip is blunt, if yes, change a new one.

7.Tilt back the machine head

8.Remove the bobbin case ④

9.Clean the hook with a soft cloth and check if the hook is worn out

10.Take out the bobbin from the bobbin case, and clean the bobbin case with a soft cloth

11.Insert the bobbin into the bobbin case and place the bobbin case back into the machine

12.Clean the dust on the filter (A) of oil pump.

4

1

3

4

5

1

28

2

2

1

-15-

A

Parts Manual

1. Casting mechanism

37

38

35

36

2

17

2

24-1

24-2

24-3

25

24

6

1

6-1

6-2

6-4

6-5

6-3

12

11

14

28

3 5

26

19

7

13

4

8

5

18

5

10

16

30

15

9-8

27

9-11

9-7

9-6

9-1

9

9-5

9-4

9-3

9-10

9-2

34

29

23

31

32

21

20

22

33

-16-

35

36

37

38

31

32

33

34

26

27

28

29

30

23

24

24-1

24-2

24-3

25

9-4

9-5

9-6

9-7

9-8

9-10

9-11

10

11

12

13

14

15

16

17

18

19

20

21

22

No . Part number

5

6

6-1

6-2

6-3

6-4

6-5

7

8

9

3

4

1

2

9-1

9-2

9-3

1KT1-002

7WF4-004

22T1-003C5

22T1-014

22T1-003C6

36T2-006D

36T2-006D1

36T2-006D2

22T2-009E3

2KT2-011

36T2-006D4

20T1-004

7WF4-015

33T4-008C

11WF4-006

22T1-012F1

22T1-012F2

33T4-008C1

11WF4-006A

22T1-012F4

22T1-012F5

22T1-012F6

22T1-012F7

22T1-012F8

22T1-012F10

22T1-012F11

22T1-013

1KT1-003

22T2-004

36T2-004

36T2-005

2KT4-002

2KT4-003

7WF4-030

7WF4-005

1WF3-025

7WF4-013

283WF1-001

7WF4-001

7WF4-006

20T1-013F2

20T1-013F3

33T4-012-A

11WF4-004

22T1-020

258WF1-007

92WF2-027

52WF2-043

36WF2-031

258WF1-005

1WF5-019

273WF1-005

273WF1-006

22T1-006

22T1-007

1. Casting mechanism

Name

Face plate

Screw

Thread guide

Thread guide

Screw

Thread guide assy.

Thread guide

Pre-tension stud

Tension disc

Tension spring

Adjusting screw

Set screw

Thread guide

Thread tension bracket assy.

Thread tension bracket assy.

Tension stud

Tension nut

Tension spring

Tension spring

Disc presser

Disc, tension

Thread take-up spring

Thread tension bracket

Set screw

Stopper

O ring

Set screw

Cover

Screw

Thread retainer

Screw

Tension release pin

Tension release stud

Rubber plug

Ruler plate

Screw

Bed leg

Washer, spring

Arm

Arm

Bed

Slide plate assy.

Slide plate

Spring plate

Screw

Needle plate

Needle plate

Screw

Bobbin thread winder assy.

Screw

Cutter

Screw

Bobbin thread tension assy.

Screw

Motor cover

-17-

Screw

Back cover

Seal

Screw

Washer

Qt.

0303D 0303DCX

2

1

1

/

3

1

1

2

1

1

1

/

4

4

1

1

2

1

1

1

4

5

1

4

1

1

2

1

1

1

1

1

1

1

1

1

1

2

1

/

1

1

1

1

/

1

1

1

2

1

1

1

1

1

3

1

1

1

1

3

2

1

/

1

3

1

1

2

1

1

/

1

4

4

1

1

2

1

1

1

4

5

1

4

1

1

2

1

1

1

1

1

1

1

1

1

1

2

1

1

1

1

1

/

1

1

1

1

2

1

1

/

1

1

3

1

1

1

1

3

Remark

GB93 6

GB/818 M5X25

2. Needle bar and thread take-up mechanism

37

38

36

11

10

33

31-2

31-1

39

23

34 35

8

9

32

-18-

2. Needle bar and thread take-up mechanism

32

33

34

35

36

37

38

39

27

28

29

30

31

31-1

31-2

20

21

22

23

24

25

26

13

14

15

16

17

18

19

No . Part number

7

8

9

10

3

4

5

6

1

2

11

12

271WF2-001

22T3-001A2

22T3-002B1

22T3-002B2

4WF1-006A

4WF1-002

J0.0.40

258WF2-004

273WF2-001

258WF2-007

33T1-004B

11WF1-001B

33T1-002

J0.0.5

4WF1-007A

33T1-006C3

22T2-005B3

33T1-006C2

20T2-007

22T2-008

22T2-011

2KT1-002

258WF2-002

33T1-017

22T2-015

22T2-017

2KT1-003

33T1-013

22T2-019

33T1-015H

22T8-001A8

22T8-001A9

33T1-005

22T1-010

258WF2-003

19WF3-005

6K2-043

Name

Upper shaft

Robber cap

Collar

Screw

Bush, L

Bush, M

Set screw

Bearing, R

Oil seal

Hand wheel

Screw

Thread take-up lever set

Thread take-up lever set

Support shaft

Set screw

Thread take-up crank

Screw

Screw

Screw

Screw

Bush, needle bar, upper

Robber cap

Bush, needle bar, lower

Friction wheel

Needle bar

Thread guide

Needle

Needle

Set screw

Guide

Slide block

Screw

Needle bar clamp assy.

Needle bar clamp

Set screw

Washer

Felt

Shaft coupling

Screw

Screw

Spring washer

Washer

Screw

Qt.

0303D 0303DCX

1

2

1

1

1

1

1

1

1

/

1

1

1

1

1

1

4

1

1

4

4

4

2

1

1

1

2

1

1

1

1

1

1

1

2

/

1

1

2

1

1

1

1

1

2

1

1

1

1

1

1

1

1

/

1

1

1

1

1

4

1

1

4

4

4

2

1

1

1

2

1

1

1

1

1

1

1

2

1

/

1

2

1

1

1

1

Remark

φ20xφ42x12

DPX17 23#

DPX17 25#

GB/T65 M5X20

GB/T859 5

GB/T95 5

-19-

3. Presser foot mechanism

28

21

27

22

11

30

29

-20-

3. Presser foot mechanism

No . Part number

29

30

4WF3-002

241WF5-001

233WF6-002

233WF6-003

11WF3-001

33T3-006

233WF6-005

233WF6-004

7WF3-004

Name

Presser bar lifter

Screw

Lifter crank

O ring

Lifter lever

Guide plate

Screw

Screw

Collecting rod

Screw

Lever

Spring, extension

Knee lifter bar

Spring hook

Shoulder screw

Bush

Presser bar

Guide bracket

Screw

Spring, compression

Adjusting screw, presser

Adjusting nut, presser

Presser foot, inside

Presser foot, inside

Screw

Thread guide

Screw

Adjusting spring

Adjusting screw

Finger guard

Washer

Qt.

0303D 0303DCX

1

/

1

/

Remark

GB3452.1

4.5×1.8G

GB97.1 4

-21-

4. Feed mechanism

76

-22-

4. Feed mechanism

23

24

25

26

27

35

36

36-1

36-2

37

38

39

28

29

30

31

32

33

34

40

41

42

7

8

9

10

11

12

13

3

4

5

6

14

15

16

17

18

19

20

21

22

No . Part number

1

2

20T3-008

75WF4-001

36T4-001A1a1

75WF4-005A

51T5-001A6

36T4-001A2

J0.0.50

4WF2-002

61-04-01/B504

22T2-019

7WF2-004

7WF2-002

22T3-002B1

22T3-002B2

4WF2-006

82T2-003C1a10-2

36T5-008E5

22T6-008D3

68WF3-011

22T6-007

7WF2-003

51T5-013

36T4-018H1D1

75WF4-003

7WF2-001

J0.0.5

22T6-008D3

4WF2-012

7WF2-012

75WF4-003

20T2-031

22T5-010D4

258WF4-002

22T5-004

258WF4-003

7WF2-009

1KT3-002

22T5-013

2KT3-003

2KT3-003a

2KT3-003b

2KT3-002

43

44

45

36T5-007D1

33T2-030-A

36T5-007D2

4WF2-004A

75WF2-004

36T5-007D4

36T5-007D5

36T5-012

Feed dog

Feed dog

Feed bar

Feed bar

Washer

Shaft

Screw

Feed rock arm

Screw

Screw

Feed shaft

Retaining ring

Bush, L

Collar

Set screw

Feed rocker arm

Stud

Set screw

Screw

Feed lifting arm

Pin

Bush, M

Washer

Feed lifting arm

Feed lifting arm

Shaft

Screw

Screw

Connecting stud

Feed regulator

Feed regulator

Screw, L

Screw, S

Bush

Shaft

Rubber cap

Pin assy. Lever

Spring, extension

Screw

Reverse stitching lever assy.

Reverse stitching lever

Spring hook pin

Shaft

O ring

O ring

Name

Stitch length dial

Stitch length plate

Stitch length plate

Support bush

Screw

Positioning pin

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

/

/

1

1

1

1

1

/

1

2

2

2

1

1

1

1

1

1

4

1

2

2

2

2

1

1

Qt.

0303D 0303DCX

1

/

/

1

1

2

1

1

/

1

1

2

1

/

1

1

1

1

1

1

1

4

1

2

2

2

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

/

1

1

1

1

1

1

/

1

1

2

2

2

/

Remark

GB894.1 15

14×2.4

4. Feed mechanism

76

-24-

61

62

67

68

69

70

63

64

65

66

71

72

73

74

75

76

77

78

4. Feed mechanism

No . Part number

55

56

57

58

59

60

50

51

52

46

47

48

49

53

54

22T5-009

7WF2-006

36T3-003D

2

36T5-008E

1

4WF2-009A

4WF2-009B

82T2-003C1a10-1

36T5-008E4H02

36T5-008E5

21WF1-060

36T5-008E4H01

36T5-008E6

36T5-008E7

36T5-008E8

36T5-008E9

36T5-008E10

75WF4-006

5WF1-002

22T6-008D3

5WF1-001

7WF2-005

36T5-011

36T3-003D

1

36T3-003D

2

36T3-004

22T3-009D1C

2KT3-008

2KT3-009

2KT3-006

2KT3-004

2KT3-005

J0.0.35

2KT3-007

17WF4-021

J0.0.40

Name

Spring

Stopper pin

Set screw

Feed cam

Feed connecting rod

Connecting rod

Stud

Link

Set screw

Set screw

Link

Shaft

Screw

Screw

Shaft

Feed regulator crank

Feed regulator crank

Pin shaft, L

Screw

Pin shaft, R

Stopper

Spring

Eccentric wheel

Screw

Holder

Feed lifting rod

Spring

Spring hook

Pin

Plate

Screw

Screw

Pin shaft

Screw

Screw

Qt.

0303D 0303DCX

1

1

3

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

/

2

2

1

1

2

/

1

1

1

1

3

1

2

1

1

1

3

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

2

/

2

1

2

/

1

1

1

1

3

1

2

1

Remark

-25-

5. Upper feed mechanism

25

26 23 22

55

54 53 54

55

46

52 51 43 49

62 63

42

66

15

20

27

19

31

21

19

6

3 4

18

55 58

17

5

60

14

1

16

9

29

32

59

33

28

1

24

30

57 55

67 47

56

61

37

48 26

39

38

40

41

45

50

44

64

11 65

34

13

21

12

9 10

2

7

8

35 36

-26-

5. Upper feed mechanism

15

16

17

18

19

20

21

22

23

24

25

8

9

10

11

12

13

14

31

32

33

34

35

36

37

26

27

28

29

30

57

58

59

60

61

62

63

64

65

66

50

51

52

53

54

55

56

44

45

46

47

48

49

38

39

40

41

42

43

67

3

4

1

2

5

6

7

No . Part number

7WF5-001

7WF5-002

7WF5-003

7WF5-004

7WF5-005

7WF5-006

11WF5-001

61-04-01/B316

7WF5-008

7WF5-009

7WF5-010

7WF5-011

7WF5-012

7WF5-013

7WF5-014A

233WF5-023

1WF4-032

22T2-019

7WF5-018

7WF5-019

7WF5-020

7WF5-050

7WF5-021

7WF5-022

7WF5-023

7WF5-024

7WF5-025

258F3-005

81WF6-003

81WF6-004

241WF3-001

7WF5-030

22T6-008D

3

7WF5-031

5WF4-002

61-04-01/B504

36T5-008E

5

5WF4-001

7WF5-032

22T2-005B

3

7WF5-034

7WF5-037

7WF5-038

7WF5-039

241WF3-003

241WF3-005

7WF5-042

7WF5-049

7WF5-043

7WF5-044

7WF5-045

61-04-01/B308

22T3-002B

1

22T3-002B

2

1KT2-004

241WF3-004

7WF5-048

33T2-030-A

7WF5-035

1WF5-024

241WF3-002

241WF3-006

1 W F 5 - 0 2 4

16WF3-031

Name

Nut

Collar

Nut

Washer

Roller shaft

Roller

Walking foot

Walking foot

Screw

Screw

Washer

Clamper

Link

Shoulder screw

Lever

Shaft

Roller shaft assy.

Crank

Screw

Screw

Lever guide

Screw

Feed lifting arm crank, L

Pin

Nut

Screw

Nut

Bracket

Link

Screw

Feed lever

Spring, compression

Guide shaft

Holder plate

Connecting rod

Screw

Rod guide

Feed rocker arm

Screw

Set screw

Stud

Eccentric wheel

Screw

Connecting rod

Shoulder screw

Connecting rod

Shoulder screw

Feed lifting arm crank, R

Bush, M

Screw

Retaining ring, C

Washer

Feed arm

Feed lifting shaft

Bush

Screw

Collar

Screw

Bush, L

Upper feed shaft

Screw

O ring

Oil felt

Spring

Bracket

Screw

Pin

Screw

-27-

Qt.

0303D 0303DCX

4

1

2

1

1

1

1

1

2

1

1

1

4

2

1

1

1

1

1

2

1

1

1

1

1

2

1

1

2

1

1

1

2

3

1

1

1

2

1

1

1

1

1

1

1

1

2

1

1

1

1

1

2

2

1

1

1

1

/

1

1

2

1

1

1

1

1

1

1

2

1

1

1

1

1

4

1

2

1

1

1

1

1

2

1

1

1

4

2

1

1

1

1

1

2

1

1

1

1

1

2

1

1

2

1

1

1

2

3

1

1

1

2

1

1

1

1

1

1

1

1

2

1

1

1

1

1

2

2

1

1

1

/

1

1

1

Remark

GB/T95 6

GB93 4

GB/T117 4×20

GB894.1 25

GB/T879.1 3×8

6. Hook mechanism

-28-

30

29

6. Hook mechanism

24

25

26

27

20

21

22

23

28

29

30

31

16

17

18

19

13

14

15

No . Part number

5

6

7

8

1

2

3

4

9

10

11

12

15WF1-001

ZOA140379

22T2-005B3

ZOA140380

ZOA140383

ZOA140382

2KT1-015

2KT1-008

J0.0.40

33T1-028R

11WF4-007

33T1-027

33T1-008J

11WF4-008

36T4-008D1

22T4-001A1a2

22T4-001A1a1

4WF1-005

22T4-005

22T4-006

22T4-002B1

J0.0.35

4WF1-004

J0.0.5

36T4-015

36T4-016

22T4-010

22T9-006

33T1-029

22T4-015

22T4-007C2

22T4-003

Name

Vertical shaft

Bevel gear, upper shaft

Set screw

Bevel gear, vertical shaft, U

Bevel gear, lower shaft

Bevel gear, vertical shaft, L

Bush, vertical shaft, U

Bush, vertical shaft, L

Screw

Bobbin case

Bobbin case

Bobbin

Hook assy.

Hook assy.

Lower shaft

Filter

Screw

Bush, lower shaft, L

Adjusting screw, oil

Adjusting spring

Collar

Screw

Bush, lower shaft, R

Screw

Plunger

Spring

Holder plate

Screw

B/case holder position bracket

Screw

Washer

Oil tube

Oil seal

Qt.

0303D 0303DCX

1

1

1

1

2

1

2

1

1

1

1

1

1

1

1

1

/

1

1

1

1

1

1

1

1

1

8

1

/

1

1

2

1

1

1

1

1

2

1

2

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

8

1

1

/

1

/

2

Remark

GB93 6

-29-

7. Lubrication mechanism

31

15

-30-

32

7. Lubrication mechanism

No .

2 8

2 9

3 0

3 1

3 2

2 3

2 4

2 5

2 6

2 7

1 6

1 7

1 8

1 9

2 0

2 1

2 2

8

9

1 0

1 1

1 2

1 3

1 4

1 5

6

7

4

5

1

2

3

Part number

1 5 W F 4 - 0 0 3

1 5 W F 4 - 0 0 6

1 5 W F 4 - 0 0 7

1 5 W F 4 - 0 0 4

2 2 T 8 - 0 0 7

2 2 T 8 - 0 0 8 A

2 2 T 8 - 0 0 9

1 5 W F 4 - 0 0 5

7 W F 4 - 0 1 6

2 2 T 8 - 0 1 2

2 2 T 8 - 0 1 3 D

2 4 2 W F 1 - 0 0 4

2 2 T 8 - 0 1 6

2 0 T 4 - 0 0 6

4 W F 4 - 0 0 5 A

2 2 T 1 - 0 0 3 C 3

2 2 T 1 - 0 0 3 C 4

2 2 T 1 - 0 1 5

2 2 T 1 - 0 1 6

2 2 T 1 - 0 1 7

2 2 T 1 - 0 0 8

2 4 1 W F 1 - 0 0 5

1 3 W F 2 - 0 3 5

2 4 1 W F 1 - 0 0 6

2 2 T 1 - 0 0 6

2 2 T 1 - 0 0 7

7 W F 4 - 0 1 1

3 3 T 3 - 0 0 6

Name

Pump body

Big gear, pump

Small gear, pump

Screw

Cover

Throat plate

Filter set

Screw

Shaft

Screw

Setting plate

Screw

Oil tube, U

Tube assy.

Tube carrier

Screw

Oil tube, L

Oil wick

Rubber cap

Rubber cap

Rubber cap

Rubber cap

Rubber cap

Oil gauge window

Back cover

Rubber cap

Packing

Screw

Washer

Oil stopper

Screw

Washer

Qt.

1

1

8

8

1

1

1

1

1

1

4

2

1

1

1

1

1

1

1

1

2

1

3

1

2

1

1

3

1

1

1

1

Remark

GB/T67 M3×10

GB/T68 M3×10

GB93 4

-31-

8. Accessories

13

12

9

10

11

8

25

29

30

39 28

31

29

30

27

34

26

32 33

38

35

36 37

-32-

40

7

2 0

2 1

2 2

2 3

2 4

2 5

1 4

1 5

1 6

1 7

1 8

1 9

1 0

1 1

1 2

1 3

6

7

8

9

2 6

2 7

2 8

2 9

3 0

3 1

3 2

3 3

3 4

3 5

3 6

3 7

3 8

3 9

4 0

8. Accessories

No . Part number

1

2

3

4

5

3 3 T F - 0 1 0

3 3 T F - 0 1 4

3 3 T F - 0 1 3

3 3 T F - 0 1 2

3 3 T 1 - 0 2 7

1 2 9 W F 1 - 0 1 6

4 W F 5 - 0 0 1

2 2 T 9 - 0 0 1 A 2

2 2 T 9 - 0 0 1 A 3

2 K T 9 - 0 0 8

4 W F 5 - 0 0 2

2 2 T 9 - 0 1 2

3 3 T F - 0 1 1

2 2 T 9 - 0 0 7 F 1

2 2 T 9 - 0 0 7 F 2

1 K T 5 - 0 0 4

1 K T 5 - 0 0 3

1 F - 0 1 2

4 F - 0 0 7

1 K T 5 - 0 0 7

2 2 T 9 - 0 0 1 A 6

2 2 T 9 - 0 0 1 A 7

2 2 T 9 - 0 0 1 A 8

2 2 T 9 - 0 0 1 A 9

2 2 T 9 - 0 0 1 A 1 0

2 2 T 9 - 0 3 6

2 2 T 9 - 0 0 3 B 3

2 2 T 9 - 0 0 3 B 2

2 2 T 9 - 0 0 3 B 5

2 2 T 9 - 0 0 3 B 6

2 2 T 9 - 0 0 3 B 7

2 2 T 9 - 0 0 3 B 8

Name

Accessory bag

Screw driver, S

Screw driver, M

Screw driver, L

Needle

Needle

Bobbin

Band

Oil pan

Screw

Washer

Packing, oil pan

Lifter bar, knee

Magnet

Oil pot

Head hinge

Cushion, head hinge

Head cushion, L

Head cushion, S

Oil tank

Thread stand assy.

Head rest

Wrench

Wrench, 2mm

Wrench, 3mm

V-belt

Lifter shaft

Spring

Bracket

Adjusting screw

Adjusting nut

Screw

Bracket

Screw

Lifter bar

Knee lifter plate

Stopper

Screw

Cover, K-lifter plate

Retaining ring

Safety switch magnet

-33-

Qt.

0303D 0303DCX

1

1

1

1

1

1

1

1

2

1

1

1

1

1

1

1

1

1

2

1

1

2

2

1

1

2

2

1

1

1

1

3

1

1

4

-

3

1

1

1

1

1

1

1

1

3

1

1

-

4

3

1

1

1

1

1

1

1

1

1

1

2

2

1

1

2

2

1

1

2

2

1

1

1

1

1

1

1

1

1

1

1

Remark

DPX17 23#

DPX17 25#

2 GB/T5356-1998

3 GB/T5356-1998

2.5 GB/T5356-1998

GB896 9

Φ8×3.5