Janome MC6600 User manual

Revised on October 20, 2005

TO REMOVE FACE PLATE AND TOP COVER ................................................................. 1
TO REMOVE BELT COVER AND MACHINE BASE .......................................................... 2
TO REMOVE AUTO THREAD CUTTER COVER .............................................................. 3
TO REMOVE FRONT COVER ........................................................................................... 4
TO REPLACE THREAD GUIDE COVER ........................................................................... 5
TO REPLACE ARM THREAD GUIDE (2) ........................................................................... 6
TO REPLACE CIRCUIT BOARD A AND FUSE.................................................................. 7
TO REMOVE CIRCUIT BOARD K ...................................................................................... 8
TO REMOVE CIRCUIT BOARD F AND SLIDE VOLUME ................................................. 9
CONNECTION OF CONNECTORS ................................................................................. 10
TO ADJUST NEEDLE DROP POSITION ..........................................................................11
TO ADJUST THE BACKLASH OF HOOK DRIVE AND LOWER SHAFT GEARS ......................... 12
ADJUSTMENT OF HOOK TIMING................................................................................... 13
ADJUSTMENT OF NEEDLE BAR HEIGHT ..................................................................... 14
ADJUSTMENT OF CLEARANCE BETWEEN NEEDLE AND ROTARY HOOK ............................. 15
ADJUSTMENT OF DIRECTION OF PRESSER BAR AND ITS HEIGHT (1) .................. 16
ADJUSTMENT OF DIRECTION OF PRESSER BAR AND ITS HEIGHT (2) .................. 17
TO ADJUST THE FEED DOG HEIGHT............................................................................ 18
TO REPLACE NEEDLE THREAD TENSION UNIT.......................................................... 19
TO ADJUST THE UPPER THREAD TENSION RELEASE (1)......................................... 20
TO ADJUST THE UPPER THREAD TENSION RELEASE (2)......................................... 21
TO ADJUST THE UPPER THREAD TENSION ................................................................ 22
TO ADJUST THE BOBBIN WINDER STOPPER ............................................................. 23
TO REPLACE NEEDLE THREADER PLATE ................................................................... 24
TO REPLACE AUTO THREAD CUTTER ......................................................................... 25
TO ADJUST THREAD DRAWING LEVER ....................................................................... 26
TO ADJUST UPPER FEED DOG (1) ................................................................................ 27
TO ADJUST UPPER FEED DOG (2) ................................................................................ 28
TO ADJUST UPPER FEED DOG HEIGHT ...................................................................... 29
THREAD TAKE-UP LEVER PHASE ................................................................................. 30
TO ADJUST UPPER SHAFT CLUTCH............................................................................. 31
LOWER SHAFT ................................................................................................................ 32
TIMING BELT .................................................................................................................... 33
TO REPLACE DRIVING MOTOR ..................................................................................... 34
TO ADJUST ZIGZAG TIMING .......................................................................................... 35
TO ADJUST BUTTONHOLE LEVER POSITION ............................................................. 36
ADJUSTMENT OF STRETCH STITCH FEED BALANCE ............................................... 37
ADJUSTMENT OF PRESSER BAR SWITCH POSITION ............................................... 38
TO ADJUST THE AUTO THREAD CUTTER SWITCH POSITION.................................. 39
TO ADJUST UPPER CLUTCH SOLENOID...................................................................... 40
TO ADJUST THREAD CUTTER SOLENOID ................................................................... 41
TO ADJUST BOBBIN DETAINING SOLENOID ............................................................... 42
DIAGNOSIS CHART .................................................................................................. 43 - 47
INDEX

TO REMOVE FACE PLATE AND TOP COVER
<TO REMOVE>
REMOVE THE SETSCREW (A) TO REMOVE THE
FACE PLATE.
<TO ATTACH>
ATTACH THE FACE PLATE WITH THE SETSCREW
(A).
FACE PLATE
TOP COVER
<TO REMOVE>
1. REMOVE THE SETSCREWS (B) AND (C).
2. PULL OUT THE CONNECTOR (D) OF THE BOB-
BIN WINDER AND REMOVE THE TOP COVER.
<TO ATTACH>
1. CONNECT THE CONNECTOR (D) AS SHOWN
ABOVE. THEN ATTACH THE TOP COVER.
TIGHTEN THE SETSCREWS (B) AND (C).
FACE PLATE
TOP COVER
SETSCREW (B)
SETSCREW (C)
PRESSURE DIAL
WASHER
CONNECTOR (D)
CONNECTOR CASE
SETSCREW (A)
1

○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
TO REMOVE BELT COVER AND MACHINE BASE
BELT COVER
[TO REMOVE]
1. REMOVE THE SETSCREWS (A), (B) AND (C).
2. REMOVE THE BELT COVER.
[TO ATTACH]
3. ATTACH THE BELT COVER BY INSERTING THE
PROJECTIONS (D), (E) AND (F) AND TIGHTEN
THE SETSCREWS (A), (B) AND (C).
SETSCREW (A)
SETSCREW (C)
BELT COVER
SETSCREW (B)
PROJECTION (F)
PROJECTION (E)
PROJECTION (D)
MACHINE BASE
[TO REMOVE]
REMOVE THE 5 SETSCRWS (A), (B), (C), (D) AND
(E).
[TO ATTACH]
ATTACH THE MACHINE BASE WITH RUBBER
FEET, WASHERS AND THE 5 SETSCREWS (A),
(B), (C), (D) AND (E).
SETSCREW (B)
SETSCREW (A)
SETSCREW (C)
SETSCREW (D)
MACHINE BASE
RUBBER
FOOT
WASHER
SETSCREW (E)
2

[TO REMOVE]:
LOOSEN THE SETSCREW (A) AND PULL OFF THE
AUTO THREAD CUTTER COVER.
[TO ATTACH]:
REPLACE THE AUTO THREAD CUTTER COVER AND
TIGHTEN THE SETSCREW (A).
SETSCREW
(A)
AUTO THREAD
CUTTER COVER
TO REMOVE AUTO THREAD CUTTER COVER
3

1 REMOVE THE FACE PLATE, TOP COVER AND BELT
COVER (REFER TO PAGES 1 AND 2).
2 LOOSEN THE SETSCREWS (A), (B), (C) AND (D).
3 PULL OUT THE CONNECTORS (REFER TO
PAGE 22) AND REMOVE THE FRONT COVER.
4 REMOVE THE NYLON CLIP FROM THE UPPER
LEFT SIDE OF THE TENSION RELEASE MOTOR.
5 PULL OUT THE CONNECTORS FROM THE
PRINTED CIRCUITBOARD K.
[TO ATTACH]
6 PROCEED WITH THE ABOVE PROCEDURE IN
REVERSE.
SETSCREW (A)
SETSCREW (C)
TO REMOVE FRONT COVER
[TO REMOVE]
SETSCREW (B)
SETSCREW (D)
FRONT
COVER
[VIEW FROM BELT COVER SIDE]
[VIEW FROM FACE PLATE SIDE]
INSULATION PAPER
CORDS
WHEN ATTACHING THE FRONT COVER, ENSURE THAT
THE CORDS SHOWN IN THE PHOTO ON THE LEFT
DO NOT GET CAUGHT BETWEEN THE COVER AND
THE PARTS.
4

TO REPLACE THREAD GUIDE COVER
[TO REMOVE]:
1. REMOVE THE FACE PLATE AND TOP COVER.
2. REMOVE THE SETSCREWS (A) AND (B).
REMOVE THE THREAD GUIDE COVER (C).
[TO ATTACH]:
1. ATTACH THE THRED GUIDE COVER, ENGAGING THE
SLIT WITH THE THREAD GUIDE PLATE (D).
2. TIGHTEN THE SETSCREWS (A) AND (B).
SETSCREW (A)
THREAD GUIDE
COVER (C)
SETSCREW (B)
SLIT
THREAD GUIDE
COVER (C) THREAD GUIDE
PLATE (D)
5

SETSCREW (C)
TO REPLACE ARM THREAD GUIDE (2)
SETSCREW (A)
SETSCREW (B)
LAMP
[TO REMOVE]:
1. REMOVE THE FACE PLATE AND MOVE THE LAMP
TO THE LEFT.
2. REMOVE THE SETSCREWS (A), (B) AND (C).
REMOVE THE ARM THREAD GUIDE (2).
[TO ATTACH]:
3. REVERSE THE ABOVE PROCEDURE.
ARM THREAD GUIDE (2)
ARM THREAD GUIDE (2)
6

TO REPLACE CIRCUIT BOARD A AND FUSE
[TO REMOVE]
1 REMOVE THE FRONT COVER
(REFER TO PAGE 4).
2 REMOVE THE 4 SETSCREWS (A).
REMOVE THE CIRCUIT BOARD A TOGETHER
WITH THE MOUNTING BRACKET.
3 REMOVE THE 2 SETSCREWS (B) AND 2 SET
SCREWS (C).
4 REMOVE THE CIRCUIT BOARD CASE AND LID.
[TO ATTACH]
REVERSE THE ABOVE PROCEDURE.
* THE SHINY SIDE OF THE INSULATION PAPER
SHOULD FACE THE CIRCUIT BOARD A.
[TO CHANGE THE FUSE]
1. REMOVE THE 2 SETSCREWS (B) AND
2 SETSCREWS (C).
2. REMOVE THE CIRCUIT BOARD CASE AND LID.
3. PRY THE FUSE OUT WITH A SCREWDRIVER
AS SHOWN.
IF THE FUSE IS LOOSE, BEND THE FUSE
HOLDER WITH YOUR FINGERS.
REPLACE THE FUSE WITH THE SAME PART NUM-
BER AS SHOWN IN THE ILLUSTRATION.
PRINTED CIRCUIT
BOARD A
SETSCREW (A) SETSCREW (A)
SETSCREW (A)
MOUNTING
BRACKET
INSULATION
PAPER
SETSCREW (B)
SETSCREW (B)
SETSCREW (C)
SETSCREW (A)
A BOARD CASE
LID
SETSCREW (B)
SETSCREW (D)
SETSCREW (D)
(F1) 3.15A
PART NO. 00182904
(F2) 2.5A
PART NO. 000144605
(F2) 2.5A
PART NO. 000144605
SETSCRW (C)
SETSCREW (C)
LID
7

SETSCREWS
SETSCREWS
SETSCREWS
SLIDE VOLUME
CONNECTOR
TO REMOVE CIRCUIT BOARD K
[TO REMOVE]
1. REMOVE THE FRONT COVER (REFER TO PAGE
4).
PULL OUT SLIDE VOLUME CONNECTOR.
2. REMOVE THE 8 SETSCREWS AND CIRCUIT
BOARD K.
[TO ATTACH]
PROCEED WITH THE ABOVE PROCEDURE IN
REVERSE.
CIRCUIT BOARD K
8

CS RING
SLIDE VOLUME
○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○
SETSCREW A
CONNECTOR
TO REMOVE CIRCUIT BOARD F AND SLIDE VOLUME
CIRCUIT BOARD F
CS RING
[TO REMOVE THE CIRCUIT BOARD F]
1. REMOVE THE FRONT COVER (REFER TO PAGE
4)
2. PULL OUT THE CONNECTOR FROM THE CIRCUIT
BOARD A.
3. REMOVE THE 4 SETSCREWS (A), 2 CS RINGS
AND CIRCUIT BOARD F.
[TO ATTACH]
REVERSE THE ABOVE PROCEDURE.
MAKE SURE THAT THE BUTTONS ARE PLACED IN
THE CORRECT PLACES AND DIRECTION (FIG. 1).
[TO REMOVE THE SLIDE VOLUME]
1. REMOVE THE FRONT COVER (REFER TO PAGE
4)
2. PULL OUT THE CONNECTOR FROM THE CIRCUIT
BOARD K.
3. REMOVE THE 2 CS RINGS AND SLIDE VOLUME.
[TO ATTACH]
REVERSE THE ABOVE PROCEDURE.
9

CONNECTOR TO
CIRCUIT BOARD K
CIRCUIT
BOARD F
CIRCUIT BOARD K
SLIDE VOLUME
CONNECTION OF CONNECTORS
CIRCUIT BOARD F
(BLACK 7 PINS)
ZIGZAG STEPPING
MOTOR (WHITE 7 PINS)
FEED STEPPING
MOTOR (BLACK 7 PINS)
LAMP (WHITE 2 PINS)
DROP FEED SWITCH
(BLUE 2 PINS)
DC MOTOR
(WHITE 5 PINS)
FOOT CONTROL
(WHITE 2 PINS)
LOWER SHAFT SENSOR
(BLACK 5 PINS)
BOBBIN WINDER
(BLACK 4 PINS)
BH SENSOR (BLACK 3 PINS) CIRCUIT BOARD K
(BLACK 32 PINS)
PRESSER BAR
SWITCH
(BLACK 2 PINS)
MOTOR FOR THREAD
TENSION RELEASE
(RED 7 PINS)
AUTO THREAD
CUTTER SWITCH
(RED 2 PINS)
UPPER SHAFT DECLUTCH
SOLENOID
(RED 2 PINS)
BOBBIN SOLENOID
(BLACK 2 PINS)
TRANSFORMER
(SECONDARY)
(RED 6 PINS) TRANSFORMER
(PRIMARY) (BLACK 2 PINS)
MACHINE SOCKET
(WHITE 2 PINS)
CIRCUIT BOARD A
AUTO THREAD CUTTER
SOLENOID (WHITE 2 PINS)
10

[TO ADJUST]:
1 REMOVE THE FACE PLATE.
CHECK THE NEEDLE DROP POSITION ON THE
STITCH PATTERN ( ) AND ZIGZAG STITCH ( )
WITH MAXIMUM WIDTH.
2 LOOSEN THE HEXAGONAL SOCKET SCREW (A)
JUST ENOUGH TO TURN THE ECCENTRIC PIN
(B). ADJUST THE NEEDLE DROP POSITION BY
TURNING THE ECCENTRIC PIN. THE DIRECTION
OF THE ECCENTRIC PIN (B) SHOULD BE AS
SHOWN IN FIG. 1.
3 TIGHTEN THE HEXAGONAL SOCKET SCREW (A).
4 ATTACH THE FACE PLATE.
TO ADJUST NEEDLE DROP POSITION
HOLE OF NEEDLE PLATE
0.2 MM OR
MORE
0.2 MM OR
MORE
A=B
FIG. 2
HEXAGONAL
SOCKET SCREW (A)
ECCENTRIC PIN (B)
FIG. 1
THREADER
LEVER
WHEN THE STRAIGHT STITCH IS SELECTED, THE NEEDLE SHOULD BE AT THE CENTER OF THE HOLE OF
THE NEEDLE PLATE. WHEN THE MAXIMUM ZIGZAG WIDTH IS SELECTED, THE DISTANCE BETWEEN THE
NEEDLE AND THE EDGE OF THE HOLE OF THE NEEDLE PLATE AT THE RIGHT AND LEFT NEEDLE POSITIONS
SHOLD BE 0.2 MM OR MORE AS SHOWN IN FIG. 2.
11

A
B
TO ADJUST THE BACKLASH OF HOOK DRIVE AND LOWER SHAFT GEARS
1 REMOVE THE MACHINE BASE (REFER TO PAGE 2)
2 REMOVE THE NEEDLE, NEEDLE PLATE AND BOB-
BIN HOLDER.
3 LOOSEN THE HEXAGONAL SOCKET SCREW (D).
4 IF THE BACKLASH IS TOO MUCH, TURN THE
LOWER SHAFT BUSHING IN DIRECTION A.
IF THE BACKLASH IS TOO LITTLE, TURN THE
LOWER SHAFT BUSHING IN DIRECTION B.
5 TIGHTEN THE HEXAGONAL SOCKET SCREW (D).
6 ATTACH THE NEEDLE, NEEDLE PLATE AND BOB-
BIN HOLDER.
7 ATTACH THE MACHINE BASE.
LOWER SHAFT BUSHING
HEXAGONAL SOCKET SCREW (D)
WIDTH OF THE FEED DOG (C)
TIP OF HOOK (E)
THE GEARS TURNS SMOOTHLY AND ROTARY PLAY OF THE HOOK SHOULD BE 0.8 MM
OR LESS (F) WHEN THE TIP OF HOOK (E) IS WITHIN THE WIDTH OF THE FEED DOG (C) AS
SHOWN BELOW.
0.8 MM OR LESS
12

[TO ADJUST]:
1 REMOVE THE MACHINE BASE (REFER TO PAGE 2)
2 TURN THE POWER SWITCH ON AND SELECT STITCH PAT-
TERN NO. 2 ( ) IN MODE 1.
3 SET THE ZIGZAG WIDTHAT 0AND TURN THE POWER SWITCH
OFF.
4 REMOVE THE PRESSER FOOT, NEEDLE PLATE AND BOBBIN
HOLDER.
5 TURN THE HANDWHEEL TOWARD YOU TO SET THE NEEDLE
BAR AT ITS LOWEST POSITION.
6 LOOSEN THE HEXAGONAL SOCKET SCREWS (A) AND (B)
ON THE LOWER SHAFT GEAR (C).
7 MOVE THE NEEDLE BAR 3.4 MM FROM THE LOWEST POSI-
TION.
8 TURN THE LOWER SHAFT GEAR (C) UNTIL THE TIP OF THE
HOOK MEETS THE RIGHT SIDE OF THE NEEDLE WHILE HOLD-
ING THE HANDWHEEL.
9 TIGHTEN THE HEXAGONAL SOCKET SCREW (A) AND (B).
10 ATTACH THE BOBBIN HOLDER, NEEDLE PLATE AND
PRESSER FOOT.
11 ATTACH THE MACHINE BASE.
[ALTANATIVE WAY OF ADJUSTMENT]
BEFORE PROCEEDING THIS ADJUSTMENT, CHECK THE
NEEDLE BAR HEIGHT USING THE [ALTANATIVE WAY OF
ADJUSTMENT] (SEE PAGE 14).
1. REMOVE THE PRESSER FOOT, NEEDLE PLATE, AND BOBBIN
HOLDER.
2. REMOVE THE MACHINE BASE.
3. TURN THE POWER SWITCH ìONî AND SELECT THE
STITCH NO. 8. SET THE ZIGZAG WIDTH MAXIMUN AT LEFT
NEEDLE POSITION.
4. ADJUST THE HOOK TIMING SO THAT THE DISTANCE
BETWEEN THE TIP OF HOOK AND THE TOP OF THE
NEEDLE EYE IS 1.8 MM WHEN THE TIP OF HOOK MEETS
WITH THE RIGHT SIDE OF THE NEEDLE IN THE UPWARD
TRAVEL OF NEEDLE BAR AT THE LEFT NEEDLE POSITION.
5. ATTACH THE BOBBIN HOLDER, NEEDLE PLATE AND
PRESSER FOOT.
6. ATTACH THE MACHINE BASE.
ADJUSTMENT OF HOOK TIMING
HEXAGONAL SOCKET SCREW (A)
HEXAGONAL SOCKET
SCREW (B)
LOWER SHAFT GEAR (C)
LOWEST POINT
NEEDLE SIZE 14 TIP OF HOOK
NEEDLE
PLATE
BOBBIN
HOLDER
THE AMOUNT OF ASCENDING TRAVEL OF THE NEEDLE BAR FROM ITS LOWEST
POSITION TO THE POSITION WHERE THE TIP OF THE ROTARY HOOK EXACTLY MEETS
THE RIGHT SIDE OF THE NEEDLE SHOLD BE 3.25 TO 3.55 MM.
13 1.8 MM(Gauge 860G-001)

[TO ADJUST]:
1 TURN THE POWER SWITCH ON AND SELECT STITCH
PATTERN NO. 2 ( ) IN MODE 1.
2 SET THE ZIGZAG WIDTH AT 0 AND TURN THE POWER
SWITCH OFF.
REMOVE THE TOP COVER (SEE PAGE 1).
3 REMOVE THE PRESSER FOOT, NEEDLE PLATE (A),
BOBBIN HOLDER (B) AND FACE PLATE.
4 REMOVE THE SETSCREW (C), AND REMOVE THE LAMP
SET PLATE.
5 REMOVE THE ARM THREAD GUIDE BY REMOVING THE
SETSCREWS (SEE FIG. I.) REMOVE THE FACE PLATE
GUIDE BY REMOVEING THE SET SCREWS (D), (E) AND
(F).
6 TURN THE BALANCE WHEEL TOWARD YOU UNTIL THE
TIP OF THE HOOK MEETS THE RIGHT SIDE OF THE
NEEDLE.
7 LOOSEN THE HEXAGONAL SOCKET SCREW (G).
8 MOVE THE NEEDLE BAR TO ADJUST THE NEEDLE BAR
HEIGHT, AND TIGHTEN THE HEXAGONAL SOCKET
SCREW (G). BE CAREFUL NOT TO TURN THE NEEDLE
BAR.
9 FIX THE ARM THREAD GUIDE AND FACE PLATE GUIDE.
10 ATTACH THE FACE PLATE.
[ALTERNATIVE WAY OF ADJUSTMENT]
BY TAKING THIS WAY OF ADJUSTMENT, IT IS NOT NECES-
SARY TO CHECK THE HOOK TIMING.
1 RAISE THE NEEDLE TO ITS HIGHEST POSITION.
2 IN THIS CONDITION, THE DISTANCE BETWEEN THE TIP
OF NEEDLE AND THE SURFACE OF THE NEEDLE PLATE
SHOULD BE 16.3 MM.
ADJUSTMENT OF NEEDLE BAR HEIGHT
NEEDLE
PLATE (A)
BOBBIN
HOLDER (B)
BEFORE PROCEEDING WITH THIS ADJUSTMENT, CHECK THE HOOK TIMING (REFER TO
PAGE 13). THE DISTANCE BETWEEN THE UPPER EDGE OF THE NEEDLE EYE AND THE
TIP OF THE HOOK SHOULD BE IN THE RANGE OF 1.6 - 2.0MM WHEN THE TIP OF THE
HOOK MEETS RIGHT SIDE OF THE NEEDLE IN THE LEFT NEEDLE POSITION ( ) AS THE
NEEDLE ASCENDS FROM ITS LOWEST POSITION.
HEXAGONAL SOCKET
SCREW (G)
SETSCREW (A)
SETSCREW (B)
LAMP SET PLATE
TIP OF HOOK
HOOK RACE
NEEDLE
SIZE 14
1.6 - 2.0 MM
UPPER EDGE
OF NEEDLE EYE 14
16.3 MM
(Gauge 860G001)
1.8 MM
Gauge 860G001)

[ADJUSTMENT II]
1. REMOVE THE MACHINE BASE (REFER TO
PAGE 2).
2. TURN THE POWER SWITCH ON, AND SELECT
THE STITCH PATTERN . SET THE ZIGZAG
WIDTH AT ì7î,
3. REMOVE THE PRESSER FOOT, NEEDLE PLATE
AND BOBBIN HOLDER.
4. LOOSEN THE SETSCREWS (E) AND (F).
LOOSEN THE SETSCREW (G) JUST ENOUGH TO
MOVE THE HOOK BASE PLATE (H).
5. TURN THE HANDWHEEL TOWARD YOU UNTIL
THE TIP OF HOOK COMES JUST BEHIND THE
MASTER NEEDLE.
ADJUST THE CLEARANCE BETWEEN THE
NEEDLE AND THE TIP OF THE ROTARY HOOK,
BY MOVING THE HOOK BASE PLATE UP OR
DOWN, TO WITHIN -0.1 TO +0.05 MM AT THE lEFT
AND RIGHT NEEDLE POSITIONS.
6. TIGHTEN THE SETSCREWS (E), (F) AND (G)
FIRMLY.
7. CHECK THE BACKLASH BETWEEN THE HOOK
DRIVE AND LOWER SHAFT GEARS.
REFER TO PAGE 13 FOR THE ADJUSTMENT.
8. ATTACH THE MACHINE BASE, BOBBIN HOLDER,
NEEDLE PLATE AND PRESSER FOOT.
ADJUSTMENT OF CLEARANCE BETWEEN NEEDLE AND ROTARY HOOK
THE CLEARANCE BETWEEN NEEDLE AND THE TIP OF THE ROTARY HOOK (J) SHOULD
BE BETWEEN -0.1 AND +0.05 MM
SETSCREW (G)
SETSCREW (F)
SETSCREW (E)
HOOK BASE
PLATE (H)
MASTER NEEDLE (I)
TIP OF HOOK (J)
-0.10 ~ +0.05MM
[ADJUSTMENT I]
1.REMOVE THE FACE PLATE, AND ATTACH A
MASTER NEEDLE (I).
2. TURN THE POWER SWITCH ON.
3. SELECT THE STITCH PATTERN AND SET THE
ZIGZAG WIDTH AT ì7î.
4. REMOVE THE PRESSER FOOT, NEEDLE PLATE
AND BOBBIN HOLDER.
5. LOOSEN THE HEXAGONAL SOCKET SCREW (A)
AND ADJUST THE CLEARANCE BETWEEN THE
NEEDLE AND TIP OF ROTARY HOOK (J) BY
MOVING THE NEEDLE BAR SUPPORTER.
CHECK THE CLEARANCE (D) BETWEEN THE
NEEDLE AND THE EDGE OF NEEDLE PLATE
HOLE. IF THE CLEARANCES (D) ARE NOT EVEN
FOLLOW THE PROCEDURE BELOW.
HEXAGONAL
SOCKET
SCREW (A)
NEEDLE BAR
SUPPORTER (B)
HOLE OF NEEDLE
PLATE (C)
CLEARANCES (D)
MUST BE EVEN
D
D
15

1 REMOVE THE FACE COVER AND TOP COVER.
2 REMOVE THE NEEDLE BAR SUPPORTER
SPRING.
3 REMOVE THE SETSCREWS. REMOVE THE
FRONT BRACKET (UNIT).
4 REMOVE THE ARM THREAD GUIDE (2) (REFER
TO PAGE 6)
5 ATTACH THE ZIGZAG FOOT (A).
6 ADJUST THE PRESSER FOOT PRESSURE TO ì3î.
7 RAISE THE PRESSER FOOT LIFTER.
8 LOWER THE FEED DOG.
TO ADJUST THE PRESSER BAR HEIGHT
9 PLACE THE 6.6 MM BLOCK (A) (GAUGE 846-G02)
BETWEEN THE PRESSER FOOT AND NEEDLE
PLATE. (THE PRESSER FOOT LIFTER SHOULD
BE AT THE NORMAL UP POSITION)
10 LOOSEN THE SETSCREW (B). TIGHTEN THE SET
SCREW (A).
* MAKE SURE THERE SHOULD BE NO GAP
BETWEEN THE WASHER AND THE PRESSER
BAR.
SETSCREW (B)
(2 mm)
6.6 MM
PRESSER
FOOT LIFTER
BLOCK (A)
(GUAGE
846-G02)
NEEDLE PLATE
PRESSER BAR
SUPPORTER
NEEDLE BAR
SUPPORTER
SPRING
SETSCREW
SETSCREW
FRONT
BRACKET
(UNIT)
ZIGZAG FOOT (A)
FEED DOG
WASHER
NO GAP
THE PRESSER FOOT IS HOLDING THE BLOCK (6.6 mm)
ADJUSTMENT OF DIRECTION OF PRESSER BAR AND ITS HEIGHT (1)
WHEN THE PRESSER FOOT IS LIFTED, THE DISTANCE BETWEEN THE SURFACE OF THE
NEEDLE PLATE AND THE BOTTOM OF THE ZIGZAG FOOT SHOULD BE 6 MM. WHEN THE
PRESSER BAR IS LOWERED, THE PRESSER FOOT SHOULD BE PARALLEL WITH THE
SLOTS FOR THE FEED DOGS.
16

11 LOOSEN THE SETSCREW ON THE ROTATION
STOPPER WHILE THE PRESSER FOOT HOLDING
THE BLOCK (A).
ADJUST THE DIRECTION OF THE PRESSER BAR.
THE DISTANCE BETWEEN THE BLOCK AND THE
ROTATION STOPPER MUST BE 0.3 MM.
12 REMOVE THE BLOCK (A). LOWER THE PRESSER
FOOT TO CHECK THE DIRECTION OF THE
PRESSER FOOT. THE SLOTS FOR FEED DOGS
AND THE PRESSER FOOT MUST BE PARALLEL.
13 RAISE THE PRESER FOOT. PUSH UP THE
PRESSER FOOT WITH YOUR FINGER. CHECK IF
THE BLOCK MOVES SMOOTHLY.
16 ATTACH THE FRONT BRACKET (UNIT).
MAKE SURE THE PRESSER FOOT LIFTER WITCH
PLATE IS ABOVE THE SWITCH LEVERS, NOT
UNDER THE LEVERS.
17 ATTACH THE NEEDLE BAR SUPPORTER SPRING.
18 ATTACH THE FACE COVER AND TOP COVER.
ADJUSTMENT OF DIRECTION OF PRESSER BAR AND ITS HEIGHT (2)
14 IF THE BLOCK DOES NOT MOVE SMOOTHLY:
LOOSEN THE SETSCREW A AND ADJUST THE RO-
TATION STOPPER SO THAT THE BLOCK SHOULD
BE PARAELL TO THE ROTATION STOPPER.
SETSCREW (C) SHOULD NOT INTERFERE WITH
NEITHER ROTATION STOPPER NOR PRESSER BAR
AS ILLUSTRATED.
15 ATTACH THE ARM THREAD GUIDE (2).
WRONG CORRECT
SLOTS FOR FEED DOGS TO BE PARALLEL
WITH SLOTS FOR
FEED DOGS
ROTATION STOPPER
BLOCK
SETSCREW (C)
SETSCREW (C)
GAP
ROTATION STOPPER
PRESSER BAR
SETSCREW
THE BLOCK
MOVES
SMOOTHLY.
VIEW Y
VIEW Y
GAP
0.3 mm
CORRECT WRONG
PRESSER FOOT
LIFTER SWITCH
PLATE
LEVER
PRESSER FOOT
LIFTER SWITCH
PRESSER FOOT
LIFTER SWITCH
PLATE
17

TO ADJUST THE FEED DOG HEIGHT
NUT (F)
SETSCREW (E) SETSCREW (G)
ZIGZAG FOOT (A)
0.80 - 0.90 MM
SURFACE OF NEEDLE PLATE
FEED DOG (B)
HEXAGONAL SOCKET SCREW (I)
SETSCREW (H)
THREADED HOLE (J)
WHEN THE PRESSURE ADJUSTING DIAL IS AT ì3î AND THE PRESSER FOOT (A) IS
LOWERED, THE HIGHEST POSITION OF THE FEED DOG (B) SHOULD BE 0.80 TO 0.90 MM
(C) FROM THE SURFACE OF THE NEEDLE PLATE (D).
[TO ADJUST]:
1. REMOVE THE MACHINE BASE AND AUTO-
THREAD CUTTER COVER.
2. SET THE PRESSURE ADJUSTING DIAL AT ì3î
WITH THE PRESSER FOOT LOWERED.
3. TURN THE BALANCE WHEEL TOWARD YOU TO
GET THE HIGHEST POSITION OF THE FEED
DOG.
4. LOOSEN THE SETSCREW (E).
5. LOOSEN THE NUT (F).
6. ADJUST THE FEED DOG HEIGHT TO 0.80 - 0.90
MM BY TURNING THE ADJUSTING SCREW (G).
7. TIGHTEN THE NUT (F) AND SET SCREW (E).
8. ATTACH THE BED COVER.
[PARALLEL OF THE FEED DOG]
IF THE FEED DOG IS NOT PARALLEL TO THE SUR-
FACE OF THE NEEDLE PLATE AT ITS HIGHEST PO-
SITION, MAKE THE ADJUSTMENT AS FOLLOWS:
* FOR THIS ADJUSTMENT, A HEXAGONAL SOCKET
SCREW (I), PART NO. 000111108 IS REQUIRED.
1. INSERT A HEXAGONAL SOCKET SCREW (I),
PART NO. 000111108 INTO THE THREADED HOLE
(J) UNTIL IT STOPS.
2. TURN THE SETSCREW (H) CLOCKWISE TO
LOOSEN IT.
3. TURN THE HEXAGONAL SOCKET SCREW (I)
UNTIL THE FEED DOG IS PARALLEL WITH THE
SURFACE OF THE NEEDLE PLATE.
4. TIGHTEN THE LEFT-HANDED SETSCREW (H).
5. REMOVE THE HEXAGONAL SOCKET SCREW (I).
6. ATTACH THE AUTO-THREAD CUTTER COVER
AND MACHINE BASE.
SETSCREW (G) HEXAGONAL
SOCKET
SCREW (I)
SETSCREW
(E)
SETSCREW (H)
18
0.8 MM
(THICKNESS OF THE GAUGE 860G002)