Janome HF2022 User manual

SERVICE MANUAL
Model HF2022

CONTENTS
WHAT TO DO WHEN .................................................................................................................................1 - 3
SERVICE ACCESS
FACE PLATE ........................................................................................................................................4
BELT COVER ....................................................................................................................................... 4
BED BASE PLATE ...............................................................................................................................4
FRONT COVER ...................................................................................................................................5
REAR COVER......................................................................................................................................6
MECHANICAL ADJUSTMENT
UPPER THREAD TENSION DIAL........................................................................................................ 7
BOBBIN THREAD TENSION ............................................................................................................... 8
PRESSER BAR HEIGHT AND ALIGNMENT.......................................................................................9
NEEDLE SWING................................................................................................................................ 10
NEEDLE DROP.................................................................................................................................. 11
HEIGHT OF FEED DOG .................................................................................................................... 12
CLEARANCE BETWEEN NEEDLE AND HOOK (NO.1) ................................................................... 13
CLEARANCE BETWEEN NEEDLE AND HOOK (NO.2) ................................................................... 14
NEEDLE BAR HEIGHT ...................................................................................................................... 15
HOOK TIMING ................................................................................................................................... 16
FEED BALANCE ON STRETCH STITCH.......................................................................................... 17
BUTTOHOLE FEED BALANCE ......................................................................................................... 18
BARTACK FEED OF BUTTONHOLE ................................................................................................. 19
DISENGAGEMENT OF CAM FOLLOWER (NO.1) ............................................................................ 20
NEEDLE MOVEMENT FOR STRAIGHT STITCH.........................................................................21-22
BUTTONHOLE FUNCTION ............................................................................................................... 23
MOTOR BELT TENSION .................................................................................................................... 24
WIRING......................................................................................................................................................... 25

WHAT TO DO WHEN
CONDITION CAUSE HOW TO FIX REFERENCE
1. SKIPPING
STITCHES 1. NEEDLE IS NOT
INSERTED PROPERLY.
2. NEEDLE IS BENT OR
WORN.
3. INCORRECTLY
THREADED.
4. NEEDLE OR THREAD IS
INAPPROPRIATE FOR
FABRIC BEING SEWN.
5. SEWING ON STRETCH
FABRIC.
6. INAPPROPRIATE NEEDLE
BAR HEIGHT.
7. INAPPROPRIATE NEEDLE
TO HOOK TIMING.
8. INAPPROPRIATE NEEDLE
TO HOOK CLEARANCE.
INSERT THE NEEDLE
PROPERLY.
CHANGE THE NEEDLE.
RETHREAD.
USE THE RECOMMENDED
SEWING NEEDLE AND THREAD.
USE A #11 BLUE TIP NEEDLE.
SEE MECHANICAL
ADJUSTMENT “NEEDLE BAR
HEIGHT”.
SEE MECHANICAL
ADJUSTMENT “HOOK TIMING”.
SEE MECHANICAL
ADJUSTMENT “CLEARANCE
BETWEEN NEEDLE AND HOOK”.
P.15
P.16
P.13,P.14
2. FABRIC NOT
MOVING 1. INCORRECT F.D. HEIGHT.
2. THREAD ON BOTTOM
SIDE OF FABRIC IS
JAMMED UP.
3. FEED DOG TEETH ARE
WORN.
SEE MECHANICAL
ADJUSTMENT “HEIGHT OF FEED
DOG”.
MAKE SURE TO BRING BOTH
NEEDLE AND BOBBIN THREAD
UNDER THE FOOT WHEN
STARTING SEWING.
CHANGE TO FEED DOG.
P.12
1

WHAT TO DO WHEN
CONDITION CAUSE HOW TO FIX REFERENCE
3. BREAKING
UPPER
THREAD
1. INITIAL SEWING SPEED IS
TOO FAST.
2. THREAD PATH IS
INCORRECT.
3. NEEDLE IS BENT OR
DULL.
4. UPPER THREAD TENSION
IS TOO STRONG.
5. NEEDLE SIZE IS
INAPPROPRIATE FOR
FABRIC.
6. NEEDLE EYE IS WORN.
7. NEEDLE HOLE IN NEEDLE
PLATE IS WORN OR
BURRED.
START WITH MEDIUM SPEED.
USE THE PROPER THREAD
PATH.
REPLACE WITH A NEW NEEDLE.
ADJUST UPPER THREAD
TENSION CORRECTLY.
USE APPROPRIATE NEEDLE
FOR FABRIC AND THREAD IN
USE.
CHANGE THE NEEDLE.
REPAIR THE HOLE OR REPLACE
THE NEEDLE PLATE.
P.7
4. BREAKNG
BOBBIN
THREAD
1. INCORRECTLY THREADED
BOBBIN CASE.
2. TOO MUCH THREAD IS
AROUND IN THE BOBBIN.
3. LINT IS STUCK INSIDE
THE BOBBIN HOLDER.
4. THREAD QUALITY IS TOO
LOW.
5. THREAD IS JAMMING
AROUNG THE BOBBIN.
6. BOBBIN THREAD TENSION
IS TOO STRONG.
THREAD BOBBIN CASE
CORRECTLY.
ADJUST THE POSITION OF
STOPPER.
CLEAN THE HOOK RACE.
CHANGE TO HIGH QUALITY
SEWING THREAD.
CLEAR OUT THE JAMMING
THREAD.
ADJUST BOBBIN THREAD
TENSION CORRECTLY. P.8
5. NEEDLE
BREAKS 1. NEEDLE IS HITTING THE NEEDLE PLATE.
2. NEEDLE IS BENT OR
WORN.
3. NEEDLE IS HITTING THE
HOOK RACE.
SEE MECHANICAL
ADJUSTMENT “NEEDLE DROP.”
CHANGE THE NEEDLE.
SEE MECHANICAL
ADJUSTMENT “CLEARANCE
BETWEEN NEEDLE AND HOOK”
P.11
P.13, P.14
2

CONDITION CAUSE HOW TO FIX REFERENCE
5. NEEDLE
BREAKS 4. THE FABRIC MOVES
WHILE THE NEEDLE IS
PIERCING IT, OR THE
NEEDLE ZIGZAGS WHILE
IN FABRIC.
5. FABRIC IN BEING PULLED
TOO STRONGLY WHILE
SEWING.
SEE MECHANICAL
ADJUSTMENT “NEEDLE SWING”.
GUIDE THE FABRIC GENTLY
WHILE SEWING.
P.10
6. NOISY
OPERATION 1. BACKLASH BETWEEN SHUTTLE HOOK GEAR
AND LOWER SHAFT GEAR
IS TOO GREAT.
2. LOWER SHAFT GEAR IS
LOOSE.
3. INAPPROPRIATE BELT
TESION.
4. UPPER SHAFT GEAR IS
LOOSE.
5. NOT ENOUGH OIL.
SEE MECHANICAL
ADJUSTMENT “CLEARANCE
BETWEEN NEEDLE AND HOOK
(NO.2)”.
ELIMINATE THE LOOSENESS.
SEE MECHANICAL
ADJUSTMENT “MOTOR BELT
TENSION”.
ELIMINATE THE LOOSENESS.
OIL ALL MOVING PARTS.
P.14
P.24
7.DEFORMATION
PATTERN 1. INAPPROPRIATE ZIGZAG SYNCHRONIZATION.
2. INAPPROPRIATE
DISENGAGEMENT OF AM
FOLLOWER.
3. UPPER THREAD TENSION
IS TOO STRONG.
4. INAPPROPRIATE FEED
BALANCE.
SEE MECHANICAL
ADJUSTMENT “NEEDLE SWING”.
SEE MECANICAL ADJUSTMENT
“DISENGAGEMENT OF CAM
FOLLOWER”.
ADJUST UPPER THREAD
TENSION CORRECTLY.
SEE MECHANICAL
ADJUSTMENT “FEED BALANCE
ON STRECH STITCH”.
P.10
P.20 - P.23
P.7
P.17
WHAT TO DO WHEN
3

SERVICE ACCESS
FACE PLATE
TO REMOVE
1. REMOVE THE FACE PLATE BY REMOVING THE CAP AND SET SCREW.
TO ATTACH
2. MOUNT THE FACE PLATE BY THE SET SCREW, AND THEN, MOUNTTHE CAP.
BELT COVER
TO REMOVE
1. LOOSEN THE SET SCREW, AND REMOVETHE BELT COVER BY REMOVING THE
BELT COVER RIB FROMTHE FRONT COVER.
TO ATTACH
2. MOUNT THE BELT COVER RIB TO THE FRONT COVER, AND THEN, MOUNT THE
BELT COVER BY THE SET SCREW.
BASE COVER
TO REMOVE
1. REMOVE THE BASE COVER BY FOUR SET SCREWS.
TO ATTACH
2. MOUNT THE BASE COVER BY FOUR SET SCREWS.
FRONT COVER
RIBBELT COVER
SET SCREW
SET SCREW
SET SCREW
BASE COVER BASE COVER
NOTCH
FACE PLATE
CAP
SET SCREW
4

SERVICE ACCESS
FRONT COVER
TO REMOVE
1. REMOVE THE FACE PLATE AND BELT COVER. (SEE PAGE 4.)
2. REMOVE SELECTOR DIALS (A) AND (B).
NOTE:NUMBER OF SELECTOR DIALS IS AS FOLLOWS:
MODEL 2022 ..... 3 DIALS
3. LOOSEN SET SCREWS (C), (D), (E), (F), (G) AND THEN, REMOVETHE FRONT
COVER BY REMOVING SET SCREW (H), (I) AND (J).
TO ATTACH
2. MOUNT THE FRONT COVER IN REVERSE PROCEDURE OFTHE REMOVING.
(C)
(H)
(I)
FRONT COVER
(A) (B) (J)
(D)
(E) CAP
(F)
5

SERVICE ACCESS
REAR COVER
NOTE:REAR COVER COULD BE REMOVED WITHOUT REMOVING FIRST FRONT COVER.
TO REMOVE
1. REMOVE THE BELT COVER (SEE PAGE 4).
2. LOOSEN THE SET SCREWS A AND B AND REMOVE THE CAP H.
3. REMOVE THE SET SCREW C, D, E, F AND G.
4. PULL UP THE 2 SPOOL PINS I AND J AND LOWER THE PRESSER FOOT LIFTER K.
5. WHILE PUSHING THE REAR COVER L NEARTHE NOTCHES L AND M, PULL UPPER
PART OFTHE REAR COVER (SEE X).
6. PULL LOWER PART OFTHE REAR COVER TOWARDYOU AND SLIDE IT TO THE
LEFT (SEEY AND Z).
WHILE SLIDING THE REAR COVER TO THE LEFT, REMOVETHE PRESSER BAR
LIFTER K.
AA
I
D
K
C
H
B
GE
F
X
Y
M
L
Z
6

MECHANICAL ADJUSTMENT
UPPER THREAD TENSION DIAL
CORRECT SETTING
THE STANDARD UPPER THREAD TENSION SHOULD BE 65G - 95G WHENTHE THREAD (COTTON
THREAD #50) IN THE DIRECTION OF B WITH SETTING THE TENSION DIAL AT “3”. (MAKE SURE
THE FOOT SHOULD BE LOWERED).
IF THE TENSION IS OUT OF THE STANARD RANGE, ADJUST IT AS FOLLOWS:
TO ADJUST
1. REMOVE THE FRONT COVER UNIT. (SEE PAGE 5.)
2. TURN THE ADJUSTING NUT C IN THE DIRECTION OF D WHENTHE UPPER THREAD
TENSION IS TOO TIGHT.
TURN THE ADJUSTUING NUT C IN THE DIRECTION OF EWHEN THE UPPER THREAD
TENSON IS TOO LOOSE.
3. ATTACHTHE FRONT PANEL COVER UNIT.
B
E
C
C
7

MECHANICAL ADJUSTMENT
BOBBIN THREAD TENSION
CORRECT SETTING
SET THE BOBBIN IN THE BOBBIN CASE AND PASS THE THREAD (COTTON #50) THROUGH THE
TENSION SPRING.
THE BOBBIN THREAD TENSION SHOULD BE 45G - 55G WHEN PULLINGTHE THREAD IN THE
DIRECTON OF B.
IF THE TENSION IS OUT THE RANGE, ADJUST IT AS FOLLOWS:
TO ADJUST
1. TURN THE ADJUSTING SCREW C IN THE DIRECTION OF D WHENTHE BOBBIN THREAD
TENSION IS TOO TIGHT.
2. TURN THE ADJUSTING SCREW C IN THE DIRECTION OF E WHENTHE BOBBIN THREAD
TENSION IS TOO LOOSE.
COTTON THREAD #50
E
D
C
8

MECHANICAL ADJUSTMENT
PRESSER BAR HEIGHT AND ALIGNMENT
CORRECT SETTING
THE STANDARD PRESSER BAR HEIGHT IS 6.0 MM BETWEEN THE BOTTOM SURFACE OF THE
FOOT AND NEEDLE PLATE WHEN PRESSER FOOT LIFTER IS UP POSITION.
TO ADJUST
1. REMOVE THE FACE PLATE. (SEE PAGE 4.)
2. REMOVE SET SCREW A AND REMOVE LAMP HOLDER SET PLATE.
3. RAISE THE PRESSER FOOT AND LOOSE PRESSER BAR BRACKET SCREW AND ADJUST
THE HEIGHT (6.0MM).
4. CHECK IF THE PRESSER FOOT IS PARALLEL TO THE OPENINGS FOR THE FEED DOG ON
THE NEEDLE PLATE.IF NOT, ADJUST IT.
5. TIGHTEN THE PRESSER BAR BRACKET SCREW WHILE HOLDING THE PRESSER BAR TO
KEEP THE FOOT PALALLEL TO THE OPENINGS.
6. ATTACHTHE LAMP HOLDER SET PLATE.
7. ATTACHTHE FACE PLATE.
6.0 mm
PRESSER FOOT
NEEDLE PLATE
OPENING
TO BE PARALLEL PRESSER BAR
BRACKET SCREW
PRESSER FOOT
LIFTER
SET SCREW A
PAMP HOLDER SET PLAE
9

MECHANICAL ADJUSTMENT
NEEDLE SWING
CORRECT SETTING
IF THE TIMING OF NEEDLE SWING IS NOT CORRECTLY ADJUSTED, THE NEEDLE WILL MOVE
SIDEWISE WHILE IT IS IN THE FABRIC.
IDEALLY THE NEEDLE SHOULD START SWING FROM A POSITION 2 MM - 3 MM ABOVE THE
NEEDLE PLATE IN ITS RIGHT OUTFLOW. (WITH MAXIMUM ZIGZAG WIDTH.)
TO ADJUST
1. SET THE PATTERN SELECTOR DIAL WITH MAXIMUM ZIGZAG WIDTH, AND REMOVETHE
FRONT COVER. (SEE PAGE 5.)
2. LOOSEN TWO SET SCREWS.
3. ADJUST THE NEEDLE SWING BY TURNING THE BALANCE WHEEL, WHILE PRESSING THE
WORM SO AS NOT TO ROTATE IT, UNTIL THE NEEDLE SWING STARTS AT 2 MM - 3 MM ON
THE NEEDLE PLATE AFTER THE NEEDLE HAS COME OUT OFTHE RIGHT SIDE OF THE
NEEDLE HOLE.
4. TIGHTEN TWO SET SCREWS.
5. MOUNT THE FRONT COVER.
NOTE:AFTER ADJUSTINGTHE NEEDLE SWING, CHECK THAT THE UPPER SHAFT WORM AND
GEAR ROTATE SMOOTHLY ANY BACKLASH BETWEEN THEM.
SET SCREW (2 PCS.)
GEAR
UPPER SHAFT WORM
2 - 3 mm
10

MECHANICAL ADJUSTMENT
NEEDLE DROP
CORRECT SETTING
WHEN THE NEEDLE SWINGS IN MAXIMUM ZIGZAG WIDTH, THE DISTANCE BETWEEN THE BOTH
ENDS OF NEEDLE HOLE ON THE NEEDLE PLATE AND NEEDLE DROP POSITIONS SHOULD BE
EQUAL.
IF NOT, MAKE AN ADJUSTMENT AS FOLLOWS:
TO ADJUST
1. REMOVE THE FACE PLATE. (SEE PAGE 4.)
2. SET THE PATTERN SELECTOR DIAL AT MAXIMUM ZIGZAG WIDTH.
3. LOOSEN THE SET SCREW.
4. TURN THE ECCENTRIC PIN TO AJUSTTHE NEEDLE DROP POSITION.
5. TIGHTEN THE SET SCREW.
6. ATTACHTHE FACE PLATE.
NOTE:CHECKTHE HOOK TIMING AFTER THIS ADJUSTMENT.
SET SCREW
ECCENTRIC PIN
BOTH CLEARANCE SHOULD BE EQUAL.
11

MECHANICAL ADJUSTMENT
HEIGHT OF FEED DOG
CORRECT SETTING
LOWERTHE PRESSER FOOT AND TURN THE BALANCE WHEELTOWARDYOU UNTIL THE
NEEDLE BAR COMES TO THE HIGHEST POINT OF ITSTRAVEL.
IN THIS CONDITION, THE HEIGHT OF THE FEED DOG ABOVE THE NEEDLE PLATE SHOULD BE
0.75 MM - 0.90 MM.
IF IT IS NOT IN THE RANGE, MAKE AN ADJUSTMENT AS FOLLOWS:
TO ADJUST
1. SET THE STITCH LENGTH DIL AT “4”.(PATTERN SELECTOR DIAL AT ANY POSITION.)
2. LOWERTHE PRESSER FOOT AND TURN THE BALANCE WHEEL UNTILTHE FEED DOG
COMES TO ITS HIGHEST POINT.
3. LOOSEN THE SET SCREW A.
4. TURN THE FEED LIFTING PIN TO ADJUSTTHE HEIGHT OF FEED DOG (0.75 MM - 0.90 MM).
5. TIGHTEN THE SET SCREW A.
6. TURN THE BALANCE WHEEL TO RECHECK THE HEIGHT OF FEED DOG.
* RAISE NEEDLE TO ITS HEIGHEST POSITION.
FEED LIFTING PIN SET SCREW A
NEEDLE PLATE
0.75 mm - 0.90 mm
12

MECHANICAL ADJUSTMENT
CLEARANCE BETWEEN NEEDLE AND HOOK (NO.1)
CORRECT SETTING
THE CLEARANCE BETWEEN NEEDLE AND SHUTTLE RACE SHOULD BE 0 MM - 0.15 MM.
IF NOT, MAKE AN ADJUSTMENT AS FOLLOWS:
TO ADJUST
1. REMOVE THE FACE PLATE. (SEE PAGE 4.)
2. SET THE PATTERN SELECTOR DIAL AT LEFT NEEDLE POSITION “ ”.
(STITCH LENGTH DIAL AT ANY POSITION.)
NOTE:FOR MODEL 2022 ... SET THE PATTERN SELECTOR DIAL AT “ ”.
3. LOOSEN SET SCREW A, AND MOVE THE NEEDLE BAR SUPPORTER TO ARROWSTO GET
CLEARANCE BETWEEN 0 MM TO 0.15 MM.
* WHEN CLEARANCE IS TOO WIDE, MOVE THE NEEDLE BAR SUPPORTER TO DIRECTION
B.
* WHEN CLEARANCE IS TOO NARROW, MOVE THE NEEDLE BAR SUPPORTER TO
DIRECTION C.
NOTE:AFTERTHIS ADJSTMENT, CHECK IF THE CLEARANCE BETWEEN NEEDLE AND NEEDLE
PLATE IS MORE THAN 0.15 MM AS SHOWN IN FIGURE D.
IF NOT, ADJUST THE CLEARANCE BETWEEN NEEDLE AND SHUTTLE RACE BY USING
METHOD OF ADJUSTMENT NO. 2 IN PAGE 13 AFTER READJUST THE CLEARANCE
BETWEEN NEDLE AND NEEDLE PLATE MORE THAN 0.15 MM.
4. ATTACHTHE FACE PLATE.
SET SCREW A
DIRECTION C
DIRECTION D
NEEDLE BAR SUPPORTER
0 mm - 0.15 mm
FIGURE D
CLEARANCE BETWEEN NEEDLE
AND NEEDLE PLATE IS MORE 0.15
mm.
13

MECHANICAL ADJUSTMENT
CLEARANCE BETWEEN NEEDLE AND HOOK (NO.2)
CORRECT SETTING
USE THIS ADJUSTMENT NO.2 WHEN ADJUSTMENT NO. 1 CANNOT BE USED.
THE CLEARANCE BETWEEN NEEDLE AND SHUTTLE RACE SHOULD BE 0 MM - 0.15 MM.
TO ADJUST
1. SET THE PATTERN SELECTOR DIAL AT “ ”. (STITCH LENGTH DIAL AT ANY POSITION.)
NOTE:FOR MODEL 2022 ... SET THE PATTERN SELECTOR DIAL AT “ ”.
SET THE WIDTH SELECTOR DIAL AT “ 0 ”.
2. LOOSEN THE SCREW A ON LOWER SHAFT BUSHING AND SLIDE THE GEAR ABOUT
0.5 MM TO THE RIGHT TO MAKE A SLACK BETWEEN GEARS.
3. LOWERTHE NEEDLE AND LOOSEN THE TWO SHUTTLE RACE SET SCREWS B.
MOVE THE SHUTTLE RACE UNIT AXIALLY EITHER FORWARD OR BACKWARD TO ADJUST
THE CLEARANCE BETWEEN THE NEEDLE AND THE SHUTTLE RACE INTHE RANGE OF
0 MM - 0.15 MM.
4. SET THE PATTERN SELECTOR DIAL AT “ ”, TURN THE BALANCE WHEELTO CHECK IF
THE CLEARANCE BETWEEN THE NEEDLE AND INNER EDGES OF THE SHUTTLE RACE
SPRING AT THE LEFT AND RIGHT NEEDLE DROPS ARE EQUAL.
IF NOT, MAKE AN ADJUSTMENT BY TURNINGTHE SHUTTLE RACE UNIT.
NOTE:FOR MODEL 2022 ... SET THE PATTERN SELECTOR DIAL AT “ ”.
SET THE WIDTH SELECTOR DIAL AT “ 5 ”.
5. TIGHTEN THE TWO SHUTTLE RACE SET SCREW B.
6. LOOSEN THE SET SCREW ON LOWER SHAFT BUSHING AND SLIDE THE GEAR BACK TO
THE ORIGINAL POSITION WHILE ADJUSTING THE BACKLASH.
7. TIGHTEN THE SCREWS A FIRMLY.
8. ATTACHTHE RACE COVER.
NOTE:THE BACKLASH PLAY SHOULD BE LESS THAN 0.3 MM AND LOWER SHAFT TURNS
SMOOTHLY.
AFTER THE ADJUSTMENT, CHECK THE HOOKTIMING.
SET SCREW A
LOWER SHAFT
BUSHING (FRONT)
SHUTTLE RACE SET
SCREW B (2 PCS.)
0 mm - 0.15 mm
CLEARANCE
SHOULD BE EQUAL
NEEDLE
SHUTTLE RACE SPRING
14

MECHANICAL ADJUSTMENT
NEEDLE BAR HEIGHT
CORRECT SETTING
THE STANDARD DISTANCE BETWEEN THE UPPER EDGE OF NEEDLE EYE AND THE TIP OF
SHUTTLE HOOK SHOULD BE IN THE RANGE OF 2.9 MM - 3.5 MM WHEN THE TIP OF SHUTTLE
HOOK MEETS THE LEFT SIDE OF THE NEEDLE IN ASCENDING TRAVEL OF NEEDLE FROM ITS
LEFT AND LOWEST POSITION.
TO ADJUST
1. REMOVE THE FACE PLATE. (SEE PAGE 4.)
2. SET THE PATTERN SELECTOR DIAL AT “ ”. (STITCH LENGTH DIAL AT ANY POSITION.)
NOTE:FOR MODEL 2022 ... SET THE PATTERN SELECTOR DIAL AT “ ”.
SET THE WIDTH SELECTOR DIAL AT “ 0 ”.
3. REMOVE THE SHUTTLE RACE RING.
4. TURN THE BALANCE WHEEL TOWARDYOU UNTIL TIP OF SHUTTLE HOOK MEETS THE
LEFT SIDE OF THE NEEDLE.
5. LOOSEN THE NEEDLE BAR CONNECTING STUD SET SCREW.
6. ADJUST THE HEIGHT OF THE NEEDLE BAR BY REMOVING THE NEEDLE BAR UPWARD
OR DOWNWARD WITHOUT TURNING IT.
7. TIGHTEN THE SET SCREW.
8. ATTACHTHE SHUTTLE RACE RING.
9. ATTACHTHE FACE PLATE.
NEEDLE BAR CONNECTING
STUD SET SCREW
NEEDLE BAR
TIP OF SHUTTLE HOOK MEETS LEFT
SIDE OF NEEDLE.
2.9 mm - 3.5 mm
15

MECHANICAL ADJUSTMENT
HOOK TIMING
CORRECT SETTING
THE STANDARD HEIGHT OF NEEDLE POINT FROM ITS LOWEST POINT OF TRAVEL SHOULD BE
IN THE RANGE OF 1.45 MM - 1.95 MM WHEN THE TIP OF SHUTTLE HOOK MEETS EXACTLY THE
LEFT SIDE OF NEEDLE AT LEFT NEEDLE POSITION.
TO ADJUST
1. SET THE SELECTOR DIAL AT “ ”.
NOTE:FOR MODEL 2022 ... SET THE PATTERN SELECTOR DIAL AT “ ”.
SET THE WIDTH SELECTOR DIAL AT “ 0 ”.
2. REMOVE THE FRONT PANEL COVER UNIT.
3. REMOVE THE MOTOR.
4. REMOVE THE SHUTTLE RACE RING.
5. TURN THE BARANCE WHEEL TOWARDYOU UNTIL THE TIP OF SHUTTLE HOOK MEETS
THE LEFT SIDE OF NEEDLE.
6. LOOSEN THW LOWER SHAFT CRANK ARM SET SCREW (2 PCS.).
7. WHILE HOLDING THE SHUTTLE HOOK NUT TOTURN, TURN THE BALANCE WHEEL
TOWARDYOU UNTIL NEEDLE COMES TO ITS LOWEST POSITION.
THEN, FURTHERTURN THE BALANCEWHEEL TO RAISE THE NEEDLE ABOUT 1.7 MM
FROM ITS LOWEST POSITION.
8. TIGHTEN THE SET SCREW.
9. TURN THE BARANCE WHEEL TOWARDYOU TO CHECK IF THE HEIGHT IS THE RANGE OF
1.45 MM -1.95 MM.
IF IT IS NOT IN THE RANGE, REPEAT THE ABOVE PROCEDURE.
10. ATTACH THE SHUTTLE RACE RING.
11. ATTACH THE MOTOR AND ADJUST THE BELT TENSION.
12. ATTACH THE FRONT PANEL COVER UNIT.
LOWEST POSITION
1.45 mm - 1.95 mm
LOWER SHAFT CRONK ARM
LOWER SHAFT
SET SCREW (2 PCS.)
16

MECHANICAL ADJUSTMENT
FEED BALANCE ON STRETCH STITCH
CORRECT SETTING
IF THE STRETCH STITCH PATTERNS ARE DISTORTED WITH SETTING THE STITCH LENGTH DIAL
AT “SS”.
(IN CASE OF BEING A DIFFERENCE BETWEEN FORWARD FEEDING AND BACKWARD FEEDING
DURING STRETCH STITCH PATTERNS), MAKE AN ADJUSTMENT AS FOLLOWS:
TO ADJUST
1. REMOVE THE CAP.
2. SET THE PATTERN SELECTOR DIAL AT “ ”, AND THE STITCH LENGTH DIAL AT “SS”.
NOTE:FOR MODEL 2022 ... SET THE PATTERN SELECTOR DIAL AT “ ”.
SET THE WIDTH SELECTOR DIAL AT “ 0 ”.
SET THE STITCH LENGTH DIAL AT “ SS ”.
3. TURN THE STRETCH STITCH ADJUSTING SCREW IN THE DIRECTION OF C WHEN A > B,
OR IN THE DIRECTION OF D WHEN A < B.
4. MOUNT THE CAP.
STRETCH STITCH
ADJUSTING SCREW
CAP
NOTCH
1
23B
A
A
1
23B
A
A
1
23B
A
A
ABABAB
17

MECHANICAL ADJUSTMENT
BUTTON HOLE FEED BARANCE
CORRECT SETTING
WHEN SEWING BUTTONHOLE, THE STITCHES ON EACH SIDE OF BUTTONHOLE SHOULD BE
THE SAME STITCH DENSITY.
THE RANGE OF 9 - 11 STITCHES IN THE RIGHT SIDE ROW “BACKWARD FEEDING” AGAINST 10
STITCHES IN THE LEFT SIDE ROW “FORWARD FEEDING” IS CONSIDERED ACCEPTABLE.
TO ADJUST
1. CONFIRM THE STITCHES BY SEWING BUTTONHOLES, AND REMOVE THE CAP.
2. TURN THE ADJUSTING SCREW IN THE DIRECTION OF C IN CASE OF A (RIGHT STITCHES
ARE ROUGH), OR INTHE DIRECTION OF D IN CASE OF B (LEFT STITCHES ARE ROUGH).
3. MOUNT THE CAP.
* IN CASE OF MODEL 1541 HAVING ONE STEP BUTTONHOLE FUNCTION, THE
“FORWARD FEEDING” AND “BACKWARD FEEDING” ARE REVERSED.
CAP
NOTCH
ADJUSTING SCREW
BACKWARD FEEDING
FORWARD FEEDING
18