Janome SEW MINI DELUX User manual
SERVICE MANUAL
SEW MINI DELUX
CONTENTS
SERVICE ACCESS (1)
FACE COVER.................................................................................................................... 1
SERVICE ACCESS (2)
FRONT COVER................................................................................................................. 2
ADJUSTING THREAD TENSION......................................................................................... 3
ADJUSTING NEEDLE DROP POSITION ............................................................................ 4
ADJUSTING NEEDLE SWING............................................................................................. 5
ADJUSTING NEEDLE TO HOOK TIMING ........................................................................... 6
ADJUSTING CLEARANCE BETWEEN NEEDLE AND HOOK POINT................................ 7
ADJUSTING NEEDLE BAR HEIGHT................................................................................... 8
ADJUSTING STITCH LENGTH............................................................................................ 9
DISENGAGEMENT OF CAM FOLLOWER.......................................................................... 10
ADJUSTMENT MOTOR BELT TENSION............................................................................. 11
SETTING POSITION OF PARTS ON UPPER AND LOWER SHAFT .................................. 12
1
Sew Mini
SERVICE ACCESS (1)
FACE COVER
1. Remove the face cover by removing the setscrew (A).
Face cover
(A)
2
Sew Mini
SERVICE ACCESS (2)
FRONT COVER
TO REMOVE
1. Remove the face cover.
2. Pull out the dial and remove the set screws (A) - (E).
3. Loosen the set screws (F) - (G).
4. Remove the front cover.
NOTE: Do not remove the set screws (H).
TO ATTACH
5. Follow the above procedure in reverse.
Dial Front cover
(A)
(B)
(C)
(D)
(E)
(F)
(G)
Rear cover
(H)
3
Sew Mini
ADJUSTING THREAD TENSION
TO ADJUST
1. Remove the face cover and the front cover.
2. Turn the adjusting screw (C) in the direction of (A) when the upper thread tension is too
tight.
Turn the adjusting screw (C) in the direction of (B) when the upper thread tension is too
loose.
3. Attach the front cover and the face cover.
(C)
(C)
(B)
(A)
(C)
TO CHECK
The standard upper thread tension should be 75 - 90g when pulling the thread (polyester
thread #50) with setting the tension dial at “4”.
(Make sure the foot should be lowered.)
If the tension is out of the standard range, adjust it as follows:
4
Sew Mini
ADJUSTING NEEDLE DROP POSITION
The clearance between the needle and side edges of the needle hole should be 0.2 mm or
more when the maximum width zigzag stitch ( ) is selecte.
And the neddle should drop in the center of the needle hole when the straight stitch is ( )
selected.
TO ADJUST
1. Remove the face cover.
2. Select the straight stitch ( ) and the zigzag stitch ( ).
3. Loosen the setscrew (A) and adjust the needle drop position by turning the eccentric
pin (B).
NOTE: Adjust the direction of eccentric in the lower side.
4. Tighten the setscrew (A).
5. Attach the face cover.
Eccentric
Needle hole
A = B
0.2mm or more 0.2mm or more
(B)
(A)
5
Sew Mini
TO ADJUST
1. Remove the front cover.
2. Set the pattern selector dial at maximum zigzag width ( ).
3. Loosen two setscrews.
4. Adjust the needle swing by turning the handwheel, while holding the worm so as not
to rotate it, until the needle swing starts at 1.2mm above the needle plate after the
needle has come out of the right side of the needle hole.
5. Tighten two setscrews.
6. Mount the front cover.
ADJUSTING NEEDLE SWING
TO CHECK
Adjust the needle swing according to the following procedure, if the needle bar starts mov-
ing sideways while the needle is in the fabric when sewing the zigzag pattern ( ) (with
maximum zigzag width).
Setscrew (2 PCS.)
Upper shaft worm
1.2mm
6
Sew Mini
ADJUSTING NEEDLE TO HOOK TIMING
The amount of ascending travel of the needle from the right lowest position to where the hook
point meets the right side of the needle should be 1.7 to 2.3mm in the maximum width zigzag
stitch ( ).
1. Select the maximum width zigzag stitch ( ).
2. Remove the presser foot, needle plate (A) and bobbin holder (B).
3. Remove the front cover.
4. Turn the handwheel toward you to bring the needle to the right lowest position.
5. Loosen the 2 setscrews (C) on the lower shaft gear.
6. Raise the needle 2.0mm from the lowest position.
7. While holding the handwheel as not to move the needle bar, rotate
the hook race until the hook point meets the right side of the needle.
8. Tighten the 2 setscrews (C).
9. Attach the front cover.
10. Attach the bobbin holder, needle plate and presser foot.
Setscrews
1.7 - 2.3mm
Hook point meets the right side of
the needle.
(C)
Lower shaft gear
(A)
(B)
(E)
(D)
(Bobbin holder normal position)
TO ADJUST
NOTE: Match the bobbin holder convex part (D) to the edge of needle plate base (E) when
attach the needle plate.
7
Sew Mini
ADJUSTING CLEARANCE BETWEEN NEEDLE
AND HOOK POINT
TO ADJUST
1. Select the maximum width zigzag stitch ( ).
2. Remove the presser foot, needle plate (A) and bobbin holder (B).
3. Turn the handwheel toward you to bring the hook point behind the needle.
4. Loosen 2 setscrews (C) and adjust the clearance by turning the screw (F) in and out.
5. Tighten 2 setscrews (C).
6. Check the clearance in the right and left needle positions.
7. Attach the bobbin holder, needle plate and presser foot.
The standard clearance between the needle and hook point should be -0.10 to +0.05 mm.
Setscrews
(A)
(B)
-0.05 -0.1mm
(C)
(F)
Hook point
(E)
(D)
(Bobbin holder normal position)
NOTE: Match the bobbin holder convex part (D) to the edge of needle plate base (E) when
attach the needle plate.
Needle must be
center
8
Sew Mini
ADJUSTING NEEDLE BAR HEIGHT
The standard distance between the upper edge of the needle eye and the upper surface of the
hook race should be in the range of 2.7 - 3.3mm when the hook point meets the right side of the
needle in its ascending travel from the right lowest position of the maximum width zigzag stitch
( ).
NOTE: Before performing this adjustment, check the needle to hook timing.
1. Select the maximum width zigzag stitch ( ).
2. Remove the presser foot, needle plate (A) and bobbin holder (B).
3. Turn the handwheel toward you until the hook point meets the right
side of the needle.
4. Remove the face cover and loosen the setscrew (C).
5. Move the needle bar up or down to adjust the needle bar height.
NOTE: Be careful not to rotate the needle bar.
6. Tighten the setscrew (C).
7. Attach the face cover, bobbin holder and needle plate.
Upper edge of
needle eye
2.7 - 3.3mm
Hook point
Needle
Hook race unit
Setscrews
(A)
(B)
(C)
(E)
(D)
(Bobbin holder normal position)
TO ADJUST
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