Husqvarna E10 User manual

Service Manual
104 72 72-26
Made in Sweden
11 Aug 2010

2 104 72 72-26
ATTENTION
Be sure to observe the following, as they may well become causes for fire, electric-shock, inju-
ries, 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.
CONTENTS
Products specification................................................................................................................3
Names of principal parts.............................................................................................................4
Removing methods of external parts........................................................................................5
Adjustments:
Lower thread tension..................................................................................................................8
Upper thread tension ..................................................................................................................9
Presser bar height and alignment............................................................................................10
The centre position of the needle in the feeding direction....................................................11
Height of needle bar..................................................................................................................12
Turning movement of the needle in zigzag and the play of the worm gear ........................13
The centre position of the needle in straight stitching..........................................................14
Needle position of zigzag .........................................................................................................15
Play of arm shaft........................................................................................................................16
Clearance between needle and hook.......................................................................................17
Play between shuttle driver shaft gear and lower shaft gear................................................18
Distance adjustment between shuttle driver shaft gear and lower shaft gear....................19
Timing of needle and hook.......................................................................................................20
Setting the feed lifting in relation to the needle .....................................................................21
Feed dog height.........................................................................................................................22
Clearance between feed dog and the needle plate – Front to Back.....................................23
Clearance between feed dog and the needle plate – Side ways...........................................24
Stretch stitch balance...............................................................................................................25
Buttonhole - the colums, cutting space.................................................................................26
Buttonhole - the colums, feed balance...................................................................................27
Buttonhole - bar tack, zero feeding .........................................................................................28
Motor belt tension .....................................................................................................................29
Bobbin winding..........................................................................................................................30

104 72 72-26 3
Products specification
Machine style Free arm
Size of machine(mm) L x W x H 374x160x275
Weight (kg) 6.7(only machine)
Max rotation speed (rpm) 750 ± 50
Motor power / Light power (W) North America 60W / 10W Europe 70W / 15W
Motor type AC
Needle position Center and right position
Zigzag out-breaking device Multiple-player cams conversion type
Hook system Semi rotary hook
Thread take up lever Slit type
Presser foot lift Two-steps type
Needle threader No
Needle plate Screw fixing type
Upper thread tension adjust device Top of upper plate inclusive turning knob
Bobbin winder Self releasing with automatic stop
Reverse Press down type
Press-bar pressure regulating device Option
Kinds of stitches 19
Dials 2
Stitch length adjust device Dial type
Max. length of stitch (mm) 4.2
Max. width of zigzag (mm) 4.6-4.8mm
Face plate upper plate Plastic
Sewing table Coupled with accessories / Spare parts box
Lamp Inclusive within face cover
Speed control device Controller
Power supply switch Pulsating, two steps
Protective cover Option
Nos. of accessories Option
ITEM E10

4 104 72 72-26
Names of principal parts
1. Thread tension dial
2. Presser foot pressure
3. Thread take-up lever
4. Thread cutting
5. Presser foot
6. Needle plate
7. Sewing table/ Accessories box
8. Bobbin stopper
9. Stitch length dial
10. Stitch display
11. Reverse sewing lever
12. Spool pin
13. Bobbin winder
14. Hole for second spool pin
15. Hand wheel
16. Patten selector dial
17. Power switch
18. Main plug socket
19. Bobbin thread guide
20. Upper thread guide
21. Handle
22. Presser foot lever
23. Foot speed control
24. Power cord
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

104 72 72-26 5
Removing methods of external parts
Face cover
- Remove the screw (a).
- Remove the face cover.
Free arm cover
- Remove the screw (b) and free arm cover.
Base cover
- Lay down machine.
- Remove 3 screws (c, d, e).
- Remove free arm base cushion rubber (f).
- Remove the base plate.
a
b

6 104 72 72-26
Back cover
- Remove the face cover, free arm cover, and
base cover first.
- Lift handle and remove 4 screws (g, h, i, j).
- Loosen screw (k) about 3mm.
- Remove the back cover.

104 72 72-26 7
Front cover
- Remove the face cover, free arm cover,
base cover and back cover first.
- Remove the screw (l).
- Loosen screw (m) about 3mm.
- Remove the pattern selector dial.
- Remove the front cover following direction
of arrow.

8 104 72 72-26
Lower thread tension
Check
Set the bobbin in the bobbin case and pass a thread through the tension spring.
The lower thread tension should be between 25 and 40 grams when pulling the thread in the
direction of (A).
Adjustment
1. If the lower thread tension is too tight, turn the adjusting screw in the direction of (C).
2. If the lower thread tension is too loose, turn the adjusting screw in the direction of (D).
(A)
( D )
( C )

104 72 72-26 9
Upper thread tension
Check
Acorrect interlacing of the upper thread and the bobbin thread (cotton thread 50/2 or synthetic fiber thread 100/35) must
take place approximately in the middle of the fabric at straight and zigzag stitch setting with the tension dial at “4”.
alt. Check
The standard upper thread tension should be between 60-70 grams when pulling a cotton thread 50/2 or synthetic fiber
thread 100/35 with the tension dial at “4”. The presser foot should be lowered when checking the upper thread tension.
Adjustment
1. Remove the face cover and the front cover.
2. Turn the adjusting nut (B) in the direction of (C) when the upper thread tension is too tight.
Turn the adjusting nut (B) in the direction of (D) when the upper thread tension is too loose.
3. Attach the front cover.
( B )
( D )
( C )

10 104 72 72-26
Presser bar height and alignment
Check
1. Raise the presser foot lever (A).
2. The distance between the presser foot (C) and the needle plate (D) should be 6.0-6.2 mm.
Adjustment
1. Remove the face cover.
2. Remove lamp bracket.
3. Raise the presser foot lever and loosen the 3mm Allen screw (E) on the side of the presser bar holder.
Adjust the distance between the zigzag foot (C) and the needle plate (D) to 6.0-6.2 mm.
4. Tighten the screw (E) securely.
5. Attach the lamp bracket and face cover.
NOTE! When you tighten the screw (E), make sure that both sides of the presser foot are parallel to the feed dog slots
(F) on the needle plate.
( B )
(A)
( E )
6.0- 6.2 m
m
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104 72 72-26 11
The centre position of the needle in the feeding direction
Check
1. Set the pattern selector dial to straight ”A”.
2. Insert a new #90 needle
3. Set the needle so the needle eye is just above the needle plate
4. The needle shall pass through the centre of the needle hole (D) in the feeding direction.
Adjustment
1. Remove the face cover.
2. Set the pattern selector dial to straight ”A”.
3. Set the needle so the needle eye is just above the needle plate.
4. Loosen the 2mm Allen screw (A) of needle bar supporter (E).
5. Move needle bar supporter (E) forward / backward to adjust needle.
Backward (C) - to move needle forward.
Forward (B) - to move needle backward.
6. Set the point of needle so it passes through the centre of the needle hole (D) in the feeding direction.
7. Tighten screw (A) of needle bar supporter (E).
NOTE! This adjustment affects the ”Clearance between needle and hook” adjustment.
(A)
( C )
( B )
( E )
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12 104 72 72-26
Height of needle bar
Check
1. Set pattern selector dial to straight "A".
2. Remove shuttle hook holder.
3. Set needle at its lowest point.
4. Check that the point of the needle and the bottom surface of shuttle hook will align.
Adjustment
1. Remove the face cover
2. Set pattern selector dial to straight "A".
3. Remove the shuttle hook holder.
4. Set needle at its lowest point.
5. Loosen 2mm Allen screw (A) of needle bar bracket.
6. Adjust height of needle by moving the needle bar upward / downward.
7. Stop at the position when the point of the needle and bottom surface of shuttle hook will align.
8. After adjustment, tighten screw (A) of needle bar bracket.
9. Re-assemble the shuttle hook holder accordingly.
10. Attach the face cover.
(A)

104 72 72-26 13
Turning movement of the needle in zigzag and the play of the worm gear
Check 1
The needle should start swinging when the needle tip is 5 - 10 mm above the needle plate (G) and should stop swinging
10 - 5 mm before entering into the hole of needle plate.
Check 2
It is impossible to obtain an equally large play in one rotation of the cog wheel, but it should be as small as possible at
the tightest spot during the revolution.
Rotate the cogwheel (C) back and forth and check the play. It should be zero or as small as possible.
Adjustment
1. Remove the face cover, fre arm cover, base cover, back cover and front cover.
2. Select the zigzag stitch ”C” and set the width at “Max”.
3. Turn the hand wheel to set the needle bar at the right needle position.
4. Loosen the 2mm Allen screws (a, b).
5. Insert the Allen key into one of the Allen screws (a,b).
6. Turn the hand wheel so that the needle tip comes 5 - 10 mm above
the needle plate (G) in upward travel as shown.
- If needle flow is less than 5 mm, turn arm shaft worm gear (D) toward back (K).
- If needle flow is more than 10 mm, turn arm shaft worm gear (D) toward front (M).
7. Tighten the 2 Allen screws.
8. Check the swing of the needle.
9. Check that setting play of worm gear (D) sideways hasn’t changed.
If so …
Loosen the 2 Allen socket screws (a, b) again and move the worm gear:
- to increase the backlash, move the worm gear (D) to the direction of (E).
- to decrease the backlash, move the worm gear (D) to the direction of (F).
10. Tighten the 2 Allen screws.
11. Re-check “Turning movement of the needle in zigzag” again.
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14 104 72 72-26
The centre position of the needle in straight stitching
Check
1. Set pattern selector dial to straight "A".
2. Insert a new #90 needle.
3. The point of needle (C) shall pass through the centre of the needle hole (D) in the needle plate.
Adjustment
1. Set pattern selector dial to straight “A”.
2. Remove plate (A).
3. Loosen screw (a) than adjust screw nut (b).
Clockwise = needle moves right
Counter-clockwise = needle moves left
4. Make sure needle drops on middle of needle hole.
5. Tighten screw (a) and attach plate (A).
NOTE! This adjustment affect ”Buttonhole - the columns, cutting space” adjustment.
(D) (C)

104 72 72-26 15
Needle position of zigzag
Check
When the needle (A) swings in maximum zigzag width, the distance between both ends of the needle hole (B) on the
needle plate and the needle drop positions should be equal.
Adjustment
1. Remove the face cover.
2. Set the pattern selector dial to zigzag ”C”and maximun width.
3. Lossen screw A.
4. Adjust needle position by turning screw (B) of zigzag regulator crank:
Clockwise = needle moves right.
Counter-clockwise = needle moves left.
4. Re-check so the distance between both ends of the needle hole on the needle plate and the needle drop positions is
equal
5. Attach the face cover.
( B )
(A)
(A)
(B)

16 104 72 72-26
Play of arm shaft
Check
The axial play of the arm shaft should not be larger than 0.005 mm.
Adjustment
1. Remove the free arm cover, face cover, back cover and front cover.
2. Loosen the 2 screws (a, b) of arm shaft collar (A).
3. Pull hand wheel backward.
4. Push arm shaft collar (A) to left tightly against arm shaft bushing (B) and then fasten and secure screws (a, b).
5. Re-check the distance between arm shaft collar and arm shaft bushing.
NOTE! 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.

104 72 72-26 17
Clearance between needle and hook
Check
1. Insert a new #90 needle.
2. Set pattern selector dial to "C", stitch width to "Max".
The clearance between the needle and shuttle hook should be 0 to +0.07 mm.
Adjustment
1. Remove free arm cover.
2. Remove shuttle hook holder.
3. Set needle at its lowest point when it swings to right, stop at the position when point of the needle and shuttle hook
align.
4. Loosen screws (a, b) of open shuttle race.
5. Move shuttle race (B) forward / backward to adjust movement.
Forward = tighten the distance
Backward = lengthen the distance
6. Make sure space between needle and tip of hook is 0- 0.07mm.
7. After adjustment, re-tighten the screws.
8. Re-assemble shuttle hook holder and covers.
NOTE! This adjustment affect ”Timing of needle and hook” and ”Play between shuttle driver shaft gear and lower shaft
gear”
0-0.07 mm

18 104 72 72-26
Play between shuttle driver shaft gear and lower shaft gear
It’s impossible to obtain an equal large play in the rotation of a cogwheel, but it should be as small as possible at the
tightest spot during the revolution.
Check
1. Remove the bobbin case, the shuttle hook holder and the shuttle.
2. Turn the shuttle driver back and forth with a finger and check the play.
3. Turn the hand wheel and check the play in at least three positions during the stroke of the shuttle driver.
4. The play shall be noticeable, but not exceed 0.5mm in sideway.
Adjustment of play
1. Remove the free arm cover.
2. Loosen 2mm Allen screws (a, b) of shuttle driver shaft gear.
3. Move the lower shaft gear (A):
- backward if there is a to tight spot.
- forward if the play is too big.
4. Re-tighten the screws of the shuttle driver shaft gear.
5. Insert shuttle hook and check ”Timing of Needle and Hook”.
6. Re-assemble free arm cover, shuttle, shuttle hook holder and bobbin case.
Adjustment of timing between shuttle driver shaft gear and lower shaft gear
1. Loosen 2mm Allen screws (a, b) of shuttle driver shaft gear.
2. Remove shuttle driver shaft gear (A).
3. Set needle to its lowest point.At this position the flat side of rear end of the shuttle driver shaft shall face 5 o’clock seen
from the rear side of the machine.
4. Re-assemble shuttle driver shaft gear (A), align it with lower shaft gear (B) to mesh with each other at one point (D). If
you need to move lower shaft gear, follow ”Distance adjustment between shuttledriver shaft gear and lower shaft gear”
5. Tighten screws of shuttle driver shaft gear. Tighten first the Allen screw positioned at flat side of the shaft.
6. Check the play of the shuttle driver, above.
7. Insert shuttle hook and check ”Timing of Needle and Hook”.
8. Re-assemble back cover, free arm cover, shuttle, shuttle hook holder and bobbin case.
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104 72 72-26 19
Distance adjustment between shuttle driver shaft gear and lower shaft gear
Check
The axial play of the lower shaft should not be larger than 0.005 mm.
Adjustment
1. Remove free arm cover and base cover. Loosen 2mmAllen screw (a) of feed lifting rod cam. Push feed lifting rock
cam (A) to right.
2. Push lower shaft gear (B) to left tightly against shuttle driver shaft gear complete (C).
3. Push feed lifting rock cam (A) back toward left and secure it tightly.
4. Avoid over-tightening shuttle driver shaft gear and lower shaft gear. If gears are to tight then the torque will be big-
ger causing noise and shaking.
NOTE! This adjusting affect ”Play between shuttle driver shaft gear and lower shaft gear”

20 104 72 72-26
Timing of needle and hook
Check
1. Set pattern selector dial to "C", stitch width to "Max".
2. Set needle bar at its lowest point when it swings to left.
3. Check that clearance between point of hook and left side of needle is 3.2 - 3.6mm.
Adjustment
1. Set pattern selector dial to "C", stitch width to "Max".
2. Remove free arm cover and base cover.
3. Remove shuttle hook holder.
4. Set needle bar at its highest point and loosen the 2.5mm Allen screw (a) of crank connecting rod crank.
5. Set needle bar at its lowest point when it swings to left.
6. Loosen the 2.5mm Allen screw (b) of crank connecting rod crank.
7. Turn shuttle driver to adjust timing of needle and hook.
8. Tighten the screws of crank connecting rod crank when clearance between point of hook and left side of needle is
3.2 - 3.6mm.
Clockwise = timing is smaller
Counterclockwise = timing is bigger.
9. Re-assemble shuttle hook holder and covers.
(a)
(b)