Janome 2149SX Manuale utente

MODELS 2149SX, 2149, CJ24, 2118S, 2118, 2139S & CJ14

SERVICE MANUAL

CONTENTS

WHAT TO DO WHEN ............................................................................................ 1~3

SERVICE ACCESS

FACE COVER ...................................................................................... 4

FRONT COVER.................................................................................... 5

REAR COVER ...................................................................................... 6

MECHANICAL ADJUSTMENT

TOP TENSION ..................................................................................... 7

BOBBIN TENSION ............................................................................... 8

PRESSER BAR HEIGHT ALIGNMENT................................................ 9

NEEDLE SWING .................................................................................. 10

NEEDLE DROP .................................................................................... 11

CLEARANCE BETWEEN NEEDLE AND HOOK (NO.1)...................... 12

CLEARANCE BETWEEN NEEDLE AND HOOK (NO.2)...................... 13

FEED DOG HEIGHT ............................................................................ 14

NEEDLE BAR HEIGHT ........................................................................ 15

NEEDLE TIMING TO SHUTTLE .......................................................... 16

DISTORTED PATTERN (MODEL 2149SX, 2149, CJ24)..................... 17

BUTTONHOLE FEED BALANCE......................................................... 18

BARTACK FEED OF BUTTONHOLE (MODEL 2149SX, 2149, CJ24) 19

BARTACK FEED OF BUTTONHOLE

(MODEL 2118S, 2118, 2138S, CJ14) .................................................. 20

BUTTONHOLE FUNCTION (MODEL 2149SX, 2149, CJ24) ............... 21

DISENGAGEMENT OF CAM FOLLOWER .......................................... 22

MOTOR BELT TENSION ..................................................................... 23

WIRING .............................................................................................................. 24

OILING .............................................................................................................. 25

WHAT TO DO WHEN

CONDITION CAUSE HOW TO FIX REFERENCE

1. SKIPPING 1. NEEDLE IS NOT INSERTED INSERTTHE NEEDLE PROPERLY.

STITCHES PROPERLY.

2. NEEDLE IS BENT OR WORN. CHANGE THE NEEDLE.

3. INCORRECTLY THREADED RETHREAD.

4. NEEDLE OR THREAD ARE USE THE RECOMMENDED

INAPPROPRIATE FOR SEWING NEEDLE AND THREAD.

FABRIC BEING SEWN.

5. SEWING ON STRETCH USE A #11 BLUE TIP NEEDLE.

FABRIC

6. INAPPROPRIATE NEEDLE SEE MECHANICAL P.15

BAR HEIGHT ADJUSTMENT

“NEEDLE BAR HEIGHT”.

7. INAPPROPRIATE NEEDLE SEE MECHANICAL P.16

TO HOOK TIMING ADJUSTMENT “NEEDLE

TIMING TO SHUTTLE”.

8. INAPPROPRIATE NEEDLE SEE MECHANICAL P.12,13

TO HOOK CLEARANCE ADJUSTMENT “CLEARANCE

BETWEEN NEEDLE AND

HOOK”.

2. FABRIC NOT 1. INCORRECT F.D. HEIGHT SEE MECHANICAL P.14

MOVING ADJUSTMENT “FEED DOG

HEIGHT”.

2. THREAD ON BOTTOM SIDE MAKE SURE TO BRING

OF FABRIC IS JAMMED UP. BOTH NEEDLE AND BOBBIN

THREAD UNDER THE FOOT

WHEN STARTING SEWING.

3. FEED DOG TEETH ARE CHANGE THE FEED DOG.

WORN.

CONDITION CAUSE HOW TO FIX REFERENCE

3. BREAKING 1. INITIAL SEWING SPEED IS START WITH MEDIUM SPEED.

UPPER TOO FAST.

THREAD 2. THREAD PATH IS USE THE PROPER THREAD

INCORRECT. PATH.

3. NEEDLE IS BENT OR DULL. REPLACE WITH A NEW NEEDLE.

4. UPPER THREAD TENSION IS ADJUST UPPER THREAD P.7

TOO STRONG. TENSION CORRECTLY.

5. NEEDLE SIZE IS USE APPROPRIATE NEEDLE

INAPPROPRIATE FOR AND THREAD FOR FABRIC

FABRIC. IN USE.

6. NEEDLE EYE IS WORN. CHANGE THE NEEDLE.

7. NEEDLE HOLE IN NEEDLE REPAIR THE HOLE OR

PLATE IS WORN OR BURRED. REPLACE THE NEEDLE PLATE.

4. BREAKING 1. INCORRECTLY THREADED THREAD BOBBIN CASE

BOBBIN BOBBIN CASE. CORRECTLY.

THREAD 2. TOO MUCH THREAD IS ADJUST THE POSITION OF

AROUND ON THE BOBBIN. STOPPER.

3. LINT IS STUCK INSIDE THE CLEAN THE HOOK RACE.

BOBBIN HOLDER.

4. THREAD QUALITY IS CHANGE TO A HIGH QUALITY

TOO LOW. SEWING THREAD.

5. THREAD IS JAMMING CLEAR OUT THE JAMMING

AROUND THE BOBBIN. THREAD.

6. BOBBIN THREAD TENSION IS ADJUST BOBBIN THREAD P.8

TOO STRONG. TENSION CORRECTLY.

5. NEEDLE 1. NEEDLE IS HITTING THE SEE MECHANICAL P.11

BREAKS NEEDLE PLATE. ADJUSTMENT “NEEDLE DROP.”

2. NEEDLE IS BENT OR WORN. CHANGE THE NEEDLE.

3. NEEDLE IS HITTING THE SEE MECHANICAL P.12,13

HOOK RACE. ADJUSTMENT “CLEARANCE

BETWEEN NEEDLE AND HOOK”.

4. THE FABRIC MOVES WHILE SEE MECHANICAL P.10

THE NEEDLE IS PIERCING ADJUSTMENT “NEEDLE SWING”.

IT, OR THE NEEDLE ZIGZAGS

WHILE IN FABRIC.

5. FABRIC IS BEING PULLED TOO GUIDE THE FABRIC GENTLY

STRONGLY WHILE SEWING. WHILE SEWING.

CONDITION CAUSE HOW TO FIX REFERENCE

6. NOISY 1. BACKLASH BETWEEN SEE MECHANICAL P.13

OPERATION SHUTTLE HOOK GEAR AND ADJUSTMENT “CLEARANCE

LOWER SHAFT GEAR IS TOO BETWEEN NEEDLE AND HOOK

GREAT. (NO.2)”.

2. LOWER SHAFT GEAR IS ELIMINATE THE LOOSENESS.

LOOSE.

3. INAPPROPRIATE BELT SEE MECHANICAL P.23

TENSION. ADJUSTMENT “MOTOR BELT

TENSION”.

4. UPPERSHAFT GEAR ISLOOSE. ELIMINATE THE LOOSENESS.

5. NOT ENOUGH OIL. OIL ALL MOVING PARTS.

7. DEFORMATION 1. INAPPROPRIATE ZIGZAG SEE MECHANICAL P.10

PATTERN SYNCHRONIZATION. ADJUSTMENT “NEEDLE

SWING”.

2. INAPPROPRIATE SEE MECHANICAL P.22

DISENGAGEMENT OF CAM ADJUSTMENT

FOLLOWER. “DISENGAGEMENT OF CAM

FOLLOWER”.

3. UPPER THREAD TENSION ADJUST UPPER THREAD P.7

IS TOO STRONG. TENSION CORRECTLY.

4. INAPPROPRIATE FEED SEE MECHANICAL P.17

BALANCE. ADJUSTMENT “DISTORTED

PATTERN ”.

SERVICE ACCESS

FACE COVER

1. REMOVE THE FACE COVER BY REMOVING THE SETSCREW (A).

(A)

CAP

SERVICE ACCESS

FRONT COVER

TO REMOVE

1. LOOSEN THE SET SCREWS (A), (B),AND (C), AND THEN, REMOVE THE FRONT COVER

BY REMOVING THE SET SCREWS (D) ,(E),(F),(G),(H),(I)AND (J).

NOTE: UNHOOK THE TAB (L) FROM THE REAR COVER WHEN REMOVING THE

FRONT COVER.

TO ATTACH

2. FOLLOW THE ABOVE PROCEDURE IN REVERSE.

E G

CAP

FRONT COVER

SERVICE ACCESS

REAR COVER

TO REMOVE

1. REMOVE THE FACE COVER AND FRONT COVER. (SEE PAGE 8, 9)

2. LOOSEN THE SETSCREWS (A), (B) AND (C), AND REMOVE SETSCREWS (D), (E) AND

(F).

3. PULL UP THE SPOOL PINS. REMOVE THE MACHINE SOCKET. REMOVE THE REAR

COVER CLEARING THE PRESSER FOOT LIFTER FROM THE SLIT ON THE COVER.

TO ATTACH

4. FOLLOW THE ABOVE PROCEDURE IN REVRSE.

REAR COVER

MECHANICAL ADJUSTMENT

TOP TENSION

TO CHECK:

THE STANDARD UPPER THREAD TENSION SHOULD BE 65 - 95g WHEN PULLING THE

THREAD (COTTON THREAD #50) IN THE DIRECTION OF (B) WITH SETTING THE TENSION

DIAL AT “3”. (MAKE SURE THE FOOT SHOULD BE LOWERED.)

IF THE TENSION IS OUT OF THE STANDARD RANGE, ADJUST IT AS FOLLOWS:

ADJUSTMENT PROCEDURE:

1. REMOVE THE FRONT COVER UNIT. (SEE PAGE 9.)

2. TURN THE ADJUSTING NUT (C) IN THE DIRECTION OF (D) WHEN THE UPPER THREAD

TENSION IS TOO TIGHT.

TURN THE ADJUSTING NUT (C) IN THE DIRECTION OF (E) WHEN THE UPPER THREAD

TENSION IS TOO LOOSE.

3. ATTACH THE FRONT COVER UNIT.

MECHANICAL ADJUSTMENT

BOBBIN TENSION

TO CHECK:

SET THE BOBBIN IN THE BOBBIN CASE AND PASS THE THREAD (COTTON #50) THROUGH

THE TENSION SPRING.

THE BOBBIN THREAD TENSION SHOULD BE 45 - 55g WHEN PULLING THE THREAD IN THE

DIRECTION OF (B).

IF THE TENSION IS OUT OF THE RANGE, ADJUST IT AS FOLLOWS:

ADJUSTMENT PROCEDURE:

1. TURN THE ADJUSTING SCREW (C) IN THE DIRECTION OF (D) WHEN THE BOBBIN

THREAD TENSION IS TOO TIGHT.

2. TURN THE ADJUSTING SCREW (C) IN THE DIRECTION OF (E) WHEN THE BOBBIN

THREAD TENSION IS TOO LOOSE.

(B)

(E)

(D)

(C)

COTTON THREAD #50

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