Subscribe to Our Youtube Channel
Related Manuals for Singer HD633 M Series
Summary of Contents for Singer HD633 M Series
- Page 1 4411-4423-4432-4443-4452 5511-5523-5532-5554 44S-85SCH HD633xM-CP635xM-HD636xM HD638xM Service Manual 104 73 14-26 2022-11-08...
-
Page 2: Table Of Contents
CONTENTS 1. Names of principal parts ......................2 2. Removing methods of external parts 2-1 Sewing table ..........................3 2-2 Face plate ..........................3 2-3 Base cover ..........................3 2-4 Free arm base ........................3 2-5 Free arm slab .........................4 2-6 Arm top cover ........................4 2-7 Back cover ..........................5 2-8 Front cover..........................6 3. Adjusting methods of each part 3-1 Play of arm shaft ........................7 3-2 Noisy - take up lever adjustment ..................8 3-3 Needle drop position adjustment ..................8 3-4 Height of presser foot ......................9 3-5 Needle flow at maximum zigzag width ................10 3-6 Needle center position adjustment..................11 3-7 Needle position on zigzag ....................12 3-8 Automatic needle threader adjustment ................13 3-9 Adjustment of feed rock shaft and feed lifting rock cam ..........14 3-10 Height of needle bar ......................15 3-11 Timing of needle and hook ....................16 3-12 Distance-needle-hook ......................17 3-13 Play between shuttle driver shaft gear and lower shaft gear ........18 3-14 Play of shuttle driver shaft ....................19 3-15 Feed-dog height ........................20 3-16 Position of feed-dog in relation to the needle plate (left to right) ........21 3-17 Upper thread tension adjustment ...................22 3-18 Shuttle hook tension adjustment ..................23 3-19 Motor belt tension . -
Page 3: Names Of Principal Parts
1. Names of principal parts 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. -
Page 4: Removing Methods Of External Parts
2. Removing methods of external parts 2-1 Sewing table Keep the snap-in sewing table horizontal, and pull it in the direction of the arrow. (1) 2-2 Face plate - 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). -
Page 5: Free Arm Slab
2-5 Free arm slab - Remove the screw (k). (5) - Remove the free arm slab. (6) Free arm slab 2-6 Arm top cover Remove the screws (l, m) and remove the arm top cover. (7) ... -
Page 6: Back Cover
2-7 Back cover - Remove the screws (n, o). (9) - Remove the screw (p). (10) - Remove the screw (q). (11) - Remove the back cover. (12) ... -
Page 7: Front Cover
2-8 Front cover - 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) -
Page 8: Adjusting Methods Of Each Part
3. Adjusting methods of each part 3-1 Play of 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). -
Page 9: Noisy - Take Up Lever Adjustment
3-2 Noisy - take up lever adjustment - 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. -
Page 10: Height Of Presser Foot
3-4 Height of presser foot - Remove the face plate and lift up presser bar lifter lever (a). (1) - Loosen the screw (b) of presser bar bracket. - Place the gauge (c) (6.0~6.2mm) on top of needle plate. (3) - Pull down the presser bar lifter lever so bottom of presser foot and top surface of gauge would meet. -
Page 11: Needle Flow At Maximum Zigzag Width
3-5 Needle flow at maximum zigzag width - Remove the face plate, back cover and front cover. - Set the pattern selector dial to " ". Turn the stitch width dial to "6". - Set the needle bar at its lowest point when it 3-5mm swings to left. -
Page 12: Needle Center Position Adjustment
3-6 Needle center position adjustment - 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 driving rod pin (b). (1) - Adjust the needle bar driving rod pin (b) position, clockwise needle will turn left, counter clockwise needle will turn right. -
Page 13: Needle Position On Zigzag
3-7 Needle position on zigzag - Remove the face plate, back cover and front cover. - Set the pattern selector dial to " ". Turn the stitch width dial to "6". Set the needle position dial to middle. - Adjust the needle by turning screw (a) of zigzag regulator crank complete clockwise / counter-clockwise. -
Page 14: Automatic Needle Threader Adjustment
3-8 Automatic needle threader adjustment - Remove the face plate and turn hand wheel to raise needle bar to its highest position. - Loosen the screw (a) of the threader stopper (b). (1) - Move the stopper (b) upward and the threader hook will become higher. Move the stopper (b) downward and the threader hook will become lower. -
Page 15: Adjustment Of Feed Rock Shaft And Feed Lifting Rock Cam
3-9 Adjustment of feed rock shaft and feed lifting rock cam - Remove the cord reel cover and free arm cover. - Turn the hand wheel to make the needle at its lowest point. - Check if the feed lifting rock cam (a) and the screw (b) of feed rock cam (c) are parallel. - If the screw of feed rock cam are not parallel: Loosen the screw (b) of feed rock cam (c) -
Page 16: Height Of Needle Bar
3-10 Height of needle bar - Remove the needle plate. - Set the pattern selector dial to " " or " ". Turn the stitch width dial to "0". - Remove the screws of rotary hook plate (a, b) and rotary hook plate, and take out the shuttle hook (c). -
Page 17: Timing Of Needle And Hook
3-11 Timing of needle and hook - Remove the face plate. - Set the pattern selector dial to " " . Turn the stitch width dial to "6". - Set the needle bar at its lowest point. Place a clamp (a) around the needle bar, slightly tighten its screw (c). -
Page 18: Distance-Needle-Hook
3-12 Distance-needle-hook - Remove the face plate, front cover, back cover and needle plate. - Set the pattern selector dial to " ". Turn the stitch width dial to "6". - Take off the shuttle hook. - Set the needle towards the lowest point of right side and lift it, make sure space between needle and the tip of the shuttle hook holder is 0.05~0.10mm. -
Page 19: Play Between Shuttle Driver Shaft Gear And Lower Shaft Gear
3-13 Play between shuttle driver shaft gear and lower shaft gear - Remove the free arm cover and needle plate. - Take off the shuttle hook. - Loosen three set screws (a, b, c) of the lower shaft gear (d) and move the lower shaft gear to right or left against axial direction. -
Page 20: Play Of Shuttle Driver Shaft
3-14 Play of shuttle driver shaft - Remove the needle plate. - There are 2 gauges (a, b) for testing the 0.5 mm 0.3 mm play of shuttle driver shaft. (1) - When you turn the hand wheel counter- clockwise, the shuttle hook (c) will move to 1.0 mm 0.6 mm rotary hook plate (d), and generate the play... -
Page 21: Feed-Dog Height
3-15 Feed-dog height When the feed dog is in it's highest position it should be 0.9 to 1.05 mm above the surface of the needle plate. - Set the stitch length dial to "4". .~.mm - Remove the presser foot and free arm cover. -
Page 22: Position Of Feed-Dog In Relation To The Needle Plate (Left To Right)
3-16 Position of feed-dog in relation to the needle plate (left to right) - Remove the cord reel cover and free arm cover. - Loosen the screw (e) of the feed crank shaft (d) that is on the right side. (1) - Loosen the screw (b) of the feed crank shaft (c) that is on the left side. -
Page 23: Upper Thread Tension Adjustment
3-17 Upper thread tension adjustment - Set the dial tension (a) to "4". (1) - Use a dial tension gauge (150g) (b) to take measurement. (1) - Put dial tension thread into gauge's hook and pull, the standard range should be 70~80g. - Remove the face plate, back cover, and front cover. -
Page 24: Shuttle Hook Tension Adjustment
3-18 Shuttle hook tension adjustment - Remove the needle plate. - Use a dial tension gauge (50g) (a) to take measurement. (1) - Put dial tension thread into shuttle hook (b)(the same way as inserting the bobbin) and pull it out, the standard range should be 10~14g. -
Page 25: Motor Belt Tension
3-19 Motor belt tension - Remove the back cover, front cover and test tension of motor belt using belt tension gauge (a). Its standard measurement should be 100g. (1) - Adjusting the belt adjusting plate (b) to regulate the improper belt's tension. The way to adjust is as following: Loosen the screws (c, d) of adjusting plate (b), and then move it to up, the belt will... -
Page 26: Drop Point Of Needle
3-20 Drop point of needle - Set pattern selector dial to " ". - Place a piece of blank paper on top of the needle plate and use presser foot to secure paper by pressing presser bar lifter lever down. - Adjust the speed limiting adjustment lever to the slow speed and step on the foot controller lightly. -
Page 27: Forward And Reverse Stitching In Buttonhole Sewing (Feeding Pitch Of Reverse And Forward Stitching Is Not Even)
3-21 Forward and reverse stitching in buttonhole sewing (feeding pitch of reverse and forward stitching is not even) - Sew the right side by setting the selector dial at " " and then the left side by setting at " " (only for 4411/5511). - Set the pattern selector dial to "... -
Page 28: Buttonhole Upper And Lower Stitching Problem
3-22 Buttonhole upper and lower stitching problem - Remove the back cover. - Set the pattern selector dial to " " (only for 4411/5511). - Set the pattern selector dial to " ". - Set the stitch length dial at "0.5" to "1". - While buttonhole upper or lower stitching, remain the same distance tacking without delivering cloth. -
Page 29: Bobbin Winding Problem
3-23 Bobbin winding problem - Place empty bobbin on spindle and push it to the right. - Put the thread into the spool rod, and put the spool rod cover on it. - Lead thread from spool to back side of thread guide (a) by following the indication. - Wind thread clockwise around bobbin winder tension disc. - Page 30 030Q5D0001(B)(EN)_SINGER 4411.4423.4432.4443.4452(Q250.Q50.Q60DST) 5511.5523.5532.5554(Q25.Q50.Q60DST) 44S(Q50DST) 85SCH(Q60DST)
Need help?
Do you have a question about the HD633 M Series and is the answer not in the manual?
Questions and answers
How do I remove a broken needle & replace
To remove and replace a broken needle on a Singer HD633 M Series sewing machine:
1. Turn off the machine and unplug it.
2. Turn the handwheel to raise the needle to its highest position.
3. Loosen the needle clamp screw using a screwdriver or your fingers.
4. Carefully remove the broken needle by pulling it downward.
5. Insert a new needle with the flat side facing the back.
6. Push the needle up as far as it will go into the needle clamp.
7. Tighten the needle clamp screw securely.
This answer is automatically generated