ELNA 683, 686 Bedienungsanleitung

elna 683 - 686

SERVICE MANUAL

08/2002 Printed in Switzerland 396 901-92

INDEX

FRAME DISMANTLING

BULB COVER 1

FRONT PANEL 1

EXTENSION TABLE 2

BELT COVER 3

BACK COVER 4

ADJUSTMENTS

THREAD TENSION 5

NEEDLE BAR HEIGHT 6

FEED DOG LIFT 7

NEEDLE BAR TIMING 8

FEED DOG HEIGHT 9

PROJECTION OF THE UPPER LOOPER 10

RADIUS OF THE LOWER LOOPER 11

STOPPING POINT OF THE LOWER LOOPER (SYNCHRONIZATION) 12

LOWER LOOPER TIMING 13

CLEARANCE BETWEEN LOWER LOOPER AND LEFT AND RIGHT NEEDLE 14

TIMING BETWEEN UPPER AND LOWER LOOPER 15

CLEARANCE BETWEEN LOWER LOOPER AND UPPER LOOPER 16

NEEDLE GUARD 17

LOWER LOOPER TAKE UP LEVER 18

UPPER LOOPER TAKE UP LEVER 19

PRESSER BAR HEIGHT 20

BULB COVER

1. Unscrew the screw A

2. Remove the bulb cover

FRONT PANEL

1. Remove the bulb cover (see bulb

cover page 1).

2. Remove le bulb.

3. Unscrew the screw B.

1. Unscrew the three screws C.

2. Push the front panel slightly upwards

to unhook the front panel on the top

from rear panel.

3. Remove the front panel.

EXTENSION TABLE

1. Loose the two screws A.

1. Remove the screw cap D with a

needle.

1. Pull out the cutter dial. Protect with

small fabrics the cutter dial when the

cutter dial is pinched and pull them

out.

Replace the cutter dial.

1. Place the cutter dial so that the button

can turn and all numbers from 5 to 7

are facing to the red arrow on the

window.

2. Tighten the cutter dial and place the

screw cap.

1. Unscrew the two screws F.

2. Push the base plate downwards and

remove the extension table.

BELT COVER

1. Remove the Front panel (see page 2).

2. Loose the two screws A.

3. Unscrew the screw B.

4. Unscrew the C.

5. Push the base plate downwards in

direction of the arrow to remove the

belt cover.

BACK COVER

1. Dismantle the front panel.

2. Dismantle the extension table.

3. Dismantle the belt cover.

4. Unscrew the two screws A.

5. Push the base plate in direction of the

arrow to remove the back cover.

In this position, the back cover can be

moved sufficiently in order to make all

adjustments. If the back cover should be

replaced however, the handle must be

dismantled.

See next photo.

6. Remove the clip B left and right from

the handle.

7. Push out the two axles C to remove

the top of the handle.

8. Remove the back cover for changing.

THREAD TENSION

Value on position 4.

Blue 30-34 g

Red 14-16 g

Yellow 11-13 g

Green 30-34 g

To check the tension, use our tension spring-

balance (101670).

Preparation for the thread tension adjustment:

1. Use a 50/2 white polyester thread.

2. The thread is threaded normally from the bobbinholder to the pre-tension and tension.

3. Lower the pressure bar

How to adjust:

1. Turn the tension dials so that the number

4 is in line with the mark C.

2. Verify the thread tension.

Adjustment:

Insert a pencil in to the hole Eand push the

regulate blocking pin to the left, outside

from the ring D.

1. If the tension is too weak, hold the tension

ring Din position and turn the tension dial in

direction B.

2. If the tension is too strong, hold the tension

ring Din position and turn the tension dial in

direction A.

3. Recheck the tension and if needed repeat the

adjustment.

NEEDLE BAR HEIGHT

1. Remove the front panel (see page 1).

2. Remove the bulb socket (two screws).

3. Adjust the needle bar height (see drawing below).

FEED DOG LIFT

1. Remove the back cover (see page 4)

2. Loose the screw A.

3. Turn the feed dog cam so that the feed dog is moving as shown below.

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