ELNA eXplore 240 Manuale utente
SERVICE MANUAL
eXplore 240
(USA)
CONTENTS
TROUBLESHOOTING ........................................................................ 1–3
SERVICE ACCESS
FACE COVER / BELT COVER ....................................................... 4
BASE PLATE .................................................................................. 5
FRONT COVER .............................................................................. 6
REAR COVER ................................................................................ 7
MECHANICAL ADJUSTMENT
TOP TENSION ................................................................................ 8
BOBBIN TENSION.......................................................................... 9
PRESSER BAR HEIGHT AND ALIGNMENT ................................ 10
NEEDLE SWING............................................................................11
NEEDLE DROP ............................................................................ 12
CLEARANCE BETWEEN NEEDLE AND HOOK (NO. 1) ............. 13
CLEARANCE BETWEEN NEEDLE AND HOOK (NO. 2) ............. 14
FEED DOG HEIGHT ..................................................................... 15
NEEDLE BAR HEIGHT ................................................................. 16
NEEDLE TIMING TO SHUTTLE ................................................... 17
BUTTONHOLE FEED BALANCE ................................................. 18
FEED BALANCE ON STRETCH STITCH .................................... 19
BARTACK FEED OF BUTTONHOLE ........................................... 20
DISENGAGEMENT OF CAM FOLLOWER .................................. 21
NEEDLE MOVEMENT FOR STRAIGHT STITCH ........................ 22
MOTOR BELT TENSION .............................................................. 23
WIRING ................................................................................................. 24
1
MODEL:eXplore 240
TROUBLESHOOTING
PROBLEM CAUSE REMEDY REFERENCE
1. SKIPPING 1. NEEDLE IS NOT INSERTED INSERT THE 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. 16
BAR HEIGHT ADJUSTMENT
“NEEDLE BAR HEIGHT.”
7. INAPPROPRIATE NEEDLE SEE MECHANICAL P. 17
TO HOOK TIMING ADJUSTMENT “NEEDLE
TIMING TO SHUTTLE.”
8. INAPPROPRIATE NEEDLE SEE MECHANICAL P. 13, 14
TO HOOK CLEARANCE ADJUSTMENT “CLEARANCE
BETWEEN NEEDLE AND
HOOK.”
2. FABRIC NOT 1. INCORRECT FEED DOG SEE MECHANICAL P. 15
MOVING HEIGHT 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.
2
MODEL:eXplore 240
PROBLEM CAUSE REMEDY REFERENCE
3. BREAKING 1. INITIAL SEWING SPEED IS START WITH MEDIUM SPEED.
UPPER TOO FAST.
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. 8
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.
2. TOO MUCH THREAD IS ADJUST THE POSITION OF
WOUND ON THE BOBBIN. STOPPER.
3. LINT IS STUCK INSIDE THE CLEAN THE HOOK RACE.
HOOK RACE.
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. 9
TOO STRONG. TENSION CORRECTLY.
5. NEEDLE 1. NEEDLE IS HITTING THE SEE MECHANICAL P. 12
BREAKS NEEDLE PLATE. ADJUSTMENT “NEEDLE DROP.”
2. NEEDLE IS BENT OR WORN. CHANGE THE NEEDLE.
3. NEEDLE IS HITTING THE SEE MECHANICAL P. 13, 14
HOOK RACE. ADJUSTMENT “CLEARANCE
BETWEEN NEEDLE AND HOOK.”
4. THE FABRIC MOVES WHILE SEE MECHANICAL P. 11
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.
THREAD
THREAD
3
MODEL:eXplore 240
6. NOISY 1. BACKLASH BETWEEN SEE MECHANICAL P. 14
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. UPPER SHAFT WORM IS LOOSE. ELIMINATE THE LOOSENESS.
5. NOT ENOUGH OIL. OIL ALL MOVING PARTS.
7. DEFORMATION 1 . INAPPROPRIATE ZIGZAG SEE MECHANICAL P. 11
OF PATTERN SYNCHRONIZATION. ADJUSTMENT “NEEDLE
SWING.”
2. INAPPROPRIATE SEE MECHANICAL P. 21
DISENGAGEMENT OF CAM ADJUSTMENT
FOLLOWER. “DISENGAGEMENT OF CAM
FOLLOWER.”
3. UPPER THREAD TENSION ADJUST UPPER THREAD P. 8
IS TOO STRONG. TENSION CORRECTLY.
4. INAPPROPRIATE FEED SEE MECHANICAL P. 19
BALANCE ADJUSTMENT "FEED BALANCE
ON STRETCH STITCH."
PROBLEM CAUSE REMEDY REFERENCE
4
MODEL:eXplore 240
SERVICE ACCESS
FACE COVER
(TO REMOVE)
1. Remove the face cover by removing the cap (A) and screw (B).
(TO ATTACH)
2. Attach the face cover with the screw, and then, replace the cap.
BELT COVER
1. Loosen screw (C).
2. Take the belt cover out.
Face cover
(C)
Belt cover
(B)
(A)
5
MODEL:eXplore 240
SERVICE ACCESS
BASE PLATE
(TO REMOVE)
1. Remove 4 screws (A).
2. Remove the base plate.
(TO ATTACH)
3. Follow the above procedure in reverse.
Base plate
(A)
(A)
6
MODEL:eXplore 240
SERVICE ACCESS
FRONT COVER
(TO REMOVE)
1. Remove the face cover, and belt cover (see pages 4).
2. Loosen setscrews (A), (B), (C), (D) and (E), and then, remove the front cover by removing
setscrews (F), (G) and (H).
NOTE: Pull to release from hook (I).
(TO ATTACH)
3. Mount the front cover in reverse procedure of the removing.
(A)
(B)
(C) (D)
(F)
(H)
(G)(I)
Front cover
(E)
7
MODEL:eXplore 240
SERVICE ACCESS
REAR COVER
(TO REMOVE)
1. Remove the face cover and belt cover (see pages 4).
Note: Pull up the spool pins.
2. Loosen setscrews (A), (B), (C) and (D) (2 pcs.), and then, remove the rear cover by removing
setscrews (E), (F), (G) and (H).
NOTE: Remove the rear cover in the order of (X) (lower part) (Y) (upper part) (Z)
(presser foot lifter part). (Remove the bed cover plate together.)
(TO ATTACH)
3. Mount the rear cover in reverse procedure of the removing.
(A)
(B)
(C)
(D)
(E)
(F)
(G)
(H)
(Y)
(Z)
(X)
Rear cover
Spool pin
Bed cover plate
8
MODEL:eXplore 240
MECHANICAL ADJUSTMENT
TOP TENSION
TO CHECK:
The standard upper thread tension should be 65–95 g when pulling the thread (cotton thread #50) in
the direction of (A) with the tension dial at “3.” (Make sure the foot is lowered.)
If the tension is out of the standard range, adjust it as follows:
ADJUSTMENT PROCEDURE:
1. Remove the front cover (see page 6).
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.
(A) (B)
(C)
(D)
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