ELNA eXplore 240 Service Manual
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ELNA eXplore 240 Service Manual

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SERVICE MANUAL
eXplore 240
(USA)

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  • Page 1 SERVICE MANUAL eXplore 240 (USA)

  • Page 2: Table Of Contents

    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 ................

  • Page 3: Troubleshooting

    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.
  • Page 4 MODEL:eXplore 240 PROBLEM CAUSE REMEDY 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.
  • Page 5 MODEL:eXplore 240 PROBLEM CAUSE REMEDY REFERENCE 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.

  • Page 6: Service Access

    MODEL:eXplore 240 SERVICE ACCESS FACE COVER 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 Belt cover 1.

  • Page 7: Base Plate

    MODEL:eXplore 240 SERVICE ACCESS BASE PLATE Base plate (TO REMOVE) 1. Remove 4 screws (A). 2. Remove the base plate. (TO ATTACH) 3. Follow the above procedure in reverse.

  • Page 8: Front Cover

    MODEL:eXplore 240 SERVICE ACCESS FRONT COVER 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).

  • Page 9: Rear Cover

    MODEL:eXplore 240 SERVICE ACCESS REAR COVER Rear cover Bed cover plate Spool pin (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).

  • Page 10: Mechanical Adjustment

    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.)

  • Page 11: Bobbin Tension

    MODEL:eXplore 240 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 (A).

  • Page 12: Presser Bar Height And Alignment

    MODEL:eXplore 240 MECHANICAL ADJUSTMENT PRESSER BAR HEIGHT AND ALIGNMENT TO CHECK: 1. Raise the presser foot lever (A). 2. The distance between the presser foot (D) and the needle plate (E) should be 6.0 mm (0.24"). ADJUSTMENT PROCEDURE: 1. Remove the face cover (see page 4).

  • Page 13: Needle Swing

    MODEL:eXplore 240 MECHANICAL ADJUSTMENT NEEDLE SWING TO CHECK: When sewing the zigzag pattern (with maximum zigzag width), if the needle bar starts moving sideways while the needle is in the fabric, adjust the needle swing according to the following procedure.

  • Page 14: Needle Drop

    MODEL:eXplore 240 MECHANICAL ADJUSTMENT NEEDLE DROP TO CHECK: When the needle swings in maximum zigzag width, the distance between both ends of the needle hole on the needle plate and the needle drop positions should be equal. If not, adjust as follows: ADJUSTMENT PROCEDURE: 1.

  • Page 15: Clearance Between Needle And Hook (No. 1)

    MODEL:eXplore 240 MECHANICAL ADJUSTMENT CLEARANCE BETWEEN NEEDLE AND HOOK (ADJUSTMENT METHOD NO. 1) TO CHECK: The clearance between the needle and shuttle race should be –0.05 to +0.10 mm. If not, adjust as follows: ADJUSTMENT PROCEDURE: 1. Remove the face cover (see page 4).

  • Page 16: Clearance Between Needle And Hook (No. 2)

    MODEL:eXplore 240 MECHANICAL ADJUSTMENT CLEARANCE BETWEEN NEEDLE AND HOOK (ADJUSTMENT METHOD NO.2) TO CHECK: Use this adjustment method no. 2 when method NO.1 cannot be used. The clearance between the needle and shuttle race should be –0.05 to +0.10 mm.

  • Page 17: Feed Dog Height

    MODEL:eXplore 240 MECHANICAL ADJUSTMENT FEED DOG HEIGHT TO CHECK: 1. Lower the presser foot. 2. Turn the handwheel toward you to bring the feed dog to its highest position. The height of the feed dog from the needle plate should be 0.75 to 0.90 mm.

  • Page 18: Needle Bar Height

    MODEL:eXplore 240 MECHANICAL ADJUSTMENT NEEDLE BAR HEIGHT TO CHECK: When the tip of shuttle hook meets the left side of the needle in ascending travel of the needle from its left and lowest position, the distance between the top of the needle eye and the tip of the shuttle hook should be in the range of 2.9–3.5mm.

  • Page 19: Needle Timing To Shuttle

    MODEL:eXplore 240 MECHANICAL ADJUSTMENT NEEDLE TIMING TO SHUTTLE TO CHECK: The height of the needle point from its lowest point should be in the range of 1.45–1.95 mm when the tip of the shuttle hook meets the left side of the needle at the left needle position in ascending travel.

  • Page 20: Buttonhole Feed Balance

    MODEL:eXplore 240 MECHANICAL ADJUSTMENT BUTTONHOLE FEED BALANCE TO CHECK: When sewing a buttonhole, the stitches on each side of the buttonhole should be of the same stitch density. A range of 9–12 stitches in the “backward feeding” (right side row) against 10 stitches in the “forward feeding”...

  • Page 21: Feed Balance On Stretch Stitch

    MODEL:eXplore 240 MECHANICAL ADJUSTMENT FEED BALANCE ON STRETCH STITCH TO CHECK: If the stretch stitch patterns are distorted when setting the stitch length dial at "S.S." (There is a difference between forward feeding and backward feeding during stretch stitch patterns), adjust as...

  • Page 22: Bartack Feed Of Buttonhole

    MODEL:eXplore 240 MECHANICAL ADJUSTMENT BARTACK FEED OF BUTTONHOLE TO CHECK: If the material is fed forward or backward when sewing the bartack on a buttonhole, adjust as follows: ADJUSTMENT PROCEDURE: 1. Set the pattern selector dial at ( ), and the stitch length dial at ( 4 ).

  • Page 23: Disengagement Of Cam Follower

    MODEL:eXplore 240 MECHANICAL ADJUSTMENT DISENGAGEMENT OF CAM FOLLOWER TO CHECK: If the clearance between the cam follower and the top convex of the zigzag cam is not enough, the pattern selector dial is blocked or will not select the correct pattern.

  • Page 24: Needle Movement For Straight Stitch

    MODEL:eXplore 240 MECHANICAL ADJUSTMENT NEEDLE MOVEMENT FOR STRAIGHT STITCH TO CHECK: If needle is zigzaging slightly when select the pattern selector dial at ( ) and the stitch width dial at ( 0 ), adjust it as follows. ADJUSTMENT PROCEDURE: 1.

  • Page 25: Motor Belt Tension

    MODEL:eXplore 240 MECHANICAL ADJUSTMENT MOTOR BELT TENSION TO CHECK: 1. Improper belt tension may cause noise, overload of motor, slow running or motor belt jumping. 2. The belt deflection should be 7mm –9mm when pressing the middle of the motor belt with approximately 300 grams of pressure.

  • Page 26: Wiring

    MODEL:eXplore 240 WIRING WIRING DIAGRAM (FOR 110-120V) From motor From lamp socket (FOR 220-240V) From lamp socket From motor...

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