Download  Print this page

ELNA 320 Service Manual

Hide thumbs

Advertisement

SERVICE MANUAL
MODEL: 320

Advertisement

Table of Contents

   Summary of Contents for ELNA 320

  • Page 1 SERVICE MANUAL MODEL: 320...
  • Page 2: Table Of Contents

    CONTENTS SERVICE ACCESS (1) FACE PLATE ....................1 SERVICE ACCESS (2) BASE COVER ....................2 SERVICE ACCESS (3) FRONT COVER ................... 3 SERVICE ACCESS (4) REAR COVER ..................... 4 MECHANICAL ADJUSTMENT ......................5 ADJUSTING PRESSR FOOT HEIGHT AND ALIGNMENT ............... 6 ADJUSTING NEEDLE SWING ......................
  • Page 3: Service Access (1) Face Plate

    Service Access (1) FACE PLATE <TO REMOVE> Remove the cap and setscrew. Remove the face plate. <TO ATTACH> Attach the face plate with the setscrew. Attach the cap. Face plate Setscrew...
  • Page 4: Service Access (2) Base Cover

    Service Access (2) BASE COVER <TO REMOVE> 1 Loosen setscrews. 2. Take the base cover out. <TO ATTACH> 3 Follow the above procedure in reverse. Base cover Setscrew Setscrew Setscrew Setscrew Feed dog drop le- Setscrew Setscrew...
  • Page 5: Service Access (3) Front Cover

    Service Access (3) FRONT COVER <TO REMOVE> 1 Remove the face cover and the base cover (see page 1, 2). 2 Remove dials (A), (B). 3 Loosen setscrews (A), (B), (C). 4 Unhook the tabs and remove the front cover. <TO ATTACH>...
  • Page 6: Service Access (4) Rear Cover

    Service access (4) Rear cover <TO REMOVE> 1 Remove the face cover and front cover (see page 1~3). 2 Remove setscrews (A), (B), (C) and (D). Lower the presser foot. Remove the rear cover from the part (1), (2) to (3) in order. <TO ATTACH>...
  • Page 7: Mechanical Adjustment

    Mechanical adjustment TOP TENSION 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 2.9-3.5 mm.
  • Page 8: Adjusting Presser Foot Height And Alignment

    Adjusting Presser Foot Height and Alignment The distance between the bottom of the presser foot in up position and the needle plate should be 6.0 mm. <TO ADJUST> 1 Remove the face plate (see page 1) and needle. 2 Lower the feed dog below the needle plate. Place a block 6 mm thick under the presser foot and lower the presser foot lifter.
  • Page 9: Adjusting Needle Swing

    Adjusting Needle Swing If the needle swing when it is still in the fabric, correct it as follows. <TO ADJUST> 1 Remove the front cover (see page 3). 2 Select the zigzag stitch ( ) and set the stitch width dial at 5. 3 Loosen the setscrews on the worm.
  • Page 10: Adjusting Needle Drop Position

    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>...
  • Page 11: Adjusting Needle To Hook Timing

    Adjusting Needle to Hook Timing The amount of ascending travel of the needle in the maximum width zigzag stitch ( ) from the right lowest to where the hook point meets the right side of the needle position should be 1.4 to 2.0 mm. <TO ADJUST>...
  • Page 12: Adjusting Needle Bar Height

    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 3.0 - 3.6 mm 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 ( <TO ADJUST>...
  • Page 13: Adjusting Clearance Between Needle And Hook Point

    Adjusting Clearance between Needle and Hook Point The standard clearance between the needle and hook point should be -0.10 to +0.05 mm. <TO ADJUST> 1 Select the zigzag stitch ( ) and set the stitch dial at 5. 2 Remove the base cover (see page 2). Remove the needle plate and bobbin holder. 3 Replace the needle with the test pin.
  • Page 14: Adjusting Backlash Between Hook Drive Gear And Lower Shaft Gear

    Adjusting Backlash between Hook Drive Gear and Lower Shaft Gear The rotary play should be 0.8 mm or less when the hook point is within the span of the feed dog, and the gears should turn smoothly. <TO ADJUST> 1 Remove the base cover (see page 2). 2 Loosen the setscrews.
  • Page 15: Adjusting Feed Dog Height

    Adjusting Feed Dog Height The distance between the lowered presser foot and needle plate should be 0.75 to 0.85 mm when the feed dog is in its highest position. <TO ADJUST> 1 Select the straight stitch ( ) and set the stitch length dial at "4". 2 Lower the presser foot.
  • Page 16: Adjusting Feed Balance

    Adjusting Feed Balance The forward feeding (A) and backward feeding (B) should be equal when sewing stretch stitch pattern. <TO ADJUST> 1 Select the straight stretch stitch ( ) and set the stitch length dial at S.S. 2 Place a piece of paper under the foot. Turn the handwheel to check the needle marks. 3 If the forward feeding (A) is longer than backward feeding (B), turn the adjusting screw in the direction (C).
  • Page 17: Adjusting Buttonhole Feed Balance

    Adjusting Buttonhole Feed Balance When sewing a buttonhole, the stitches on each side of the buttonhole should be the same density. The range of 9 to 12 stitches in the right side row against 10 stitches in the left side row is considered acceptable.
  • Page 18: Adjusting Buttonhole Zero Feed

    Adjusting Buttonhole Zero Feed If the fabric is fed when sewing a bartack of the buttonhole, correct it as follows: <TO ADJUST> 1 Sew a test buttonhole to check if the fabric is fed while sewing the bartacks. 2 Remove the cap to access the adjusting screw. 3 If the fabric is fed forward (A), turn the adjusting screw in the direction (C).
  • Page 19: Mechanical Adjustment

    Mechanical Adjustment TO CHECK: If the material is feed forward or backward when sewing bartack on buttonhole, make an adjustment as follows: ADJUSTMENT PROCEDURE: 1. Set the pattern selector control at " " and the stitch length control at "4". 2.
  • Page 20: Replacing Motor And Adjusting Motor Belt Tension

    Replacing Motor and Adjusting Motor Belt Tension <TO REPLACE THE MOTOR> 1 Remove the face plate, base cover, front cover and rear cover (see pages 1 to 4). 2 Remove the setscrews (A) and machine socket. Remove the setscrews (B) and machine socket lid.
  • Page 21: Replacing And Adjusting Threader

    Replacing and Adjusting Threader <TO REPLACE> 1 Remove the face plate (see page 1). 2 Pull the threader guard away from the threader. 3 Align the groove on the threader guide with the pin on the threader shaft and push the threader guide up to snap it in place.

This manual is also suitable for:

340

Comments to this Manuals

Symbols: 0
Latest comments: