HIGHLEAD GC20638 User manual

Purchasing Dept
Copy
HIGH LEAD
GC20638/GC20638-D
Compound Split Needle Bar Feed Lockstitch
Sewing Machine
Instruction Manual
Parts Catalog
SHANGHAI HUIGONG N0.3 SEWING MACHINE FACTORY
From the library of: Diamond Needle Corp

From the library of: Diamond Needle Corp

--- CONTENTS ---
Instruction Manual
1. PREPARATION FOR OPERATION ...................................................... 1
1) Latnp leads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2) Connection of control box ............................................................... 1
3) Adjustment of needle bar stop position ..................................................... 2
2. CAUTIONS ON USE ................................................................... 2
1) Lubrication (1) ........................................................................ 2
2) Lubrication (2) ........................................................................ 2
3) Adjustment of oiling to rotating hook ...................................................... 2
4) Condition of oil lubrication .............................................................. 3
5) Cautions on operation ................................................................... 3
3. OPERATION ......................................................................... 3
1) How to attach needle ................................................................... 3
2) How to wind the lower thread ........................................................... 3
3) Selection of Thread .................................................................... 3
4) How to route the upper thread ............................................................ 4
5) Adjustment of stitch length and reverse sewing ............................................... 4
6) Settingbobbin ........................................................................ 4
7) Threading ofbobbin thread .............................................................. 5
8) Tension adjustment ofbobbin threads ...................................................... 5
9) Balance of thread tension ................................................................ 5
10) Needle thread tension .................................................................. 5
11) Adjustment of pressure of presser foot .................................................... 5
12) Timing between rotating hook motion and needle motion ...................................... 6
13) Adjustment of Feed dog height .......................................................... 6
14) Adjustment the needle stop position ....................................................... 6
15) Needle bar stop position (left & right) ...................................................... 7
16) Walking foot and presser foot vertical stroke adjustment ....................................... 7
1 7) Relationship between rotating hook motion and take-up lever motion ............................ 7
18) Relationship between hook motion and opener motion ......................................... 7
19) Relationship between needle motion and feed dog motion ...................................... 8
20) Safe clutch device .................................................................... 8
From the library of: Diamond Needle Corp

21) Adjustnlent .......................................................................... 9
22) Installation
of movable knife ............................................................ 9
23) Adjustnlent
ofthread trimmer cam ...................................................... 10
24) Adjustnlent of threads tension release assembly ............................................. 11
25) Adjustnlent of scissoring pressure of movable knife and fixed knife ............................ 11
26) Sharpening of fixed knife .............................................................. 12
27) Adjustnlent for change ofneedle-to-needle distance ......................................... 12
Parts Catalog
A, ARM BED MECHANISM ............................................................. 13
B, THREAD TENSION REGULATOR MECHANISM ......................................... 16
C, ARM SHAFT*LOWER SHAFT MECHANISM ............................................ 20
0, PRESSER FOOT MECHANISM ......................................................... 22
E, NEEDLE BAR & TAKE-UP LEVER MECHANISM ........................................ 25
F, TOP FEED ROCK SHAFT MECHANISM ................................................ 28
G, LOWER SHAFT & FEED ROCK SHAFT MECHANISM .................................... 30
H, HOOK SADDLE MECHANISM ........................................................ 33
.L KNIFT MECHANISM (1) ............................................................... 35
J, KNIFT MECHANISM (2) ............................................................. 37
K, TOUCH BACK AND DETECTOR MECHANISM .......................................... 40
L OIL LUBRICATION MECHANISM ..................................................... 42
J, ACCESSORIES ...................................................................... 45
2
From the library of: Diamond Needle Corp

1. PREPARATION FOR OPERATION
1) Lamp Leads
A. When installing the illuminating lamp (6V, 15-20W), The connecting wire is attached on the back of
the Control box. It should be removed and connected by removing the insulating tube from the wire
and stripping properly.
The wire connections should be," then, insulated by wrapping insulating tape on
B.
the wires.
CAUTION: The power switch must be turned off before connecting the lamp.
When the illuminating lamp is not used, (b) lns~ating tape
(a) Bare wire (2 to 3 turns wrapped)
the end of the lamp leads must be
insulated as (a ) or (b) as shown in the
figure on right side.
If a short circuit
occurs failing to insulate, the transformer
in the control
box will be possibly
burned out.
Lamp leads
lnsl.daHng
tape (2 to
3 turns
\\fapped)
Lamp leads
CAUTION: The illuminating lamp must not be connected with any heater, such as a foot
warmer and others, in parallel. Otherwise, the load capacity will be exceeded. It may cause
transformer winding burned out.
C. Rotary direction
It is possible to change the rotary direction of the motor by removing the rubber cap from the bottom
left side
of the front cover on the control box, and push the internal direction selector switch. The
built-in lamp
in the internal switch is off when the motor is
rotating counterclockwise as facing to the motor pulley, and on
when rotating clockwise. The rotary direction has
been set to
counterclockwise as facing to the motor pulley, matching with the
machine prior to shipping.
2) Connection of control box(Fig.l)
The control box should be connected as shown to the right.
Note:
A. Be sure to turn the power switch offfor safety before
connecting or disconnecting the connectors.
B. The combination of the machine heads with the motor control
panels are specified below. Use special care for the correct
combination when replacing the machine head or motor
control panel.
-I-
Black mark DOWN position
From the library of: Diamond Needle Corp

3) Adjustment of needle bar stop position(Fig.2,Fig.3)
A. Adjust of "UP" position: When the pedal is kicked down by heel, the machine stops at "UP" position.
If the marks deviate larger than 3 mm, adjust as follows.
a. Disconnect the plug (12 pins) of cable from the
machine head.
b. Run the machine and stop at "UP" position.
c. While holding the pulley, insert the "adjusting
tool" in the hole "A", then remove the tool.
B. Adjust of "Down" position: When the pedal is
"Neutral" the machine stops at "Down" position. If
the marks deviate large than 5 mm, adjust as follows.
®
a. Disconnect the plug (12 pins) of cable from the machine head.
b. Run the machine and stop at "Down" position.
Adjueting toll
c. While holding the pulley, insert the "adjusting tool" in the hole "B", then remove the tool.
C. Confirm the stop operation, then set the plug (12 pings) coming from the machine head into the
receptacle.
2.CAUTIONS ON USE
-1) Lubrication (1 )(Fig.4)
Pour oil up to position "H" of the oil tank.
During operation, check the oil level periodically, and in cases
where the oil level is below position "L", replenish the oil
supply up to position "H".
Use white spindle oil.
2) Lubrication (2)(Fig.5)
When a new sewing machine is used for the first time, or sewing machine left out of use for a long time is
used again, replenish a suitable amount of oil to the portions indicated by arrow in the fig.
Note: Lubricate the Hook Base everyday.
3) Adjustment of
oiling to rotating
hook( Fig.6)
-2-
From the library of: Diamond Needle Corp

4) Condition ofoil lubrication (Fig.5):
While operating the machine, check the condition of oil lubrication through the oil check window.
5) Cautions on operation
A When the power is turned on or off, keep foot away from the pedal.
B
It should be noted that the brake may not work when the power is interrupted or power failure occurs
during sewing machine operation.
C Since dust in the control box might cause malfunction or control troubles, be sure to keep the control
box cover close during operation.
D Do not apply a multimeter to the control circuit for checking; otherwise voltage
of multimeter might
damage semiconductor components in the circuit.
3.0PERATION
1) How to attach needle (Fig.7):
Note: Before attach needle, be sure to tum offthe power.
Loosen the needle clamping screw; Hold the needles so that the
two needles side with the long grooved (faces each other), and
insert it
as deeply as it will go into the needle clamping holes,
tighten screws.
2) How to wind the lower thread (Fig.S):
Strength of winding: Particularly in the case of nylon or
polyester thread,
\Vind the bobbin loosely. 7
Uneven winding: If the bobbin is wound unevenly, slide the thread guide toward the less wound portion of
bobbin.
Winding amount: When the bobbin is wound excessively, loosen the adjusting screw. When the bobbin is
wound insufficiently, tighten the adjusting screw.
3) Selection of Thread (Fig.9):
\/Vindlng amount
adjusting screw
Thread guid
I
-· 3-
0
-
Even winding With
an amount 4/5 of
fully capacny
Fig.8 Fig.9
From the library of: Diamond Needle Corp

It is recommended to use "S" twist thread inthe left needle (Viewed from front), and "Z" twist thread in the
right needle.
When discriminate use of needle thread 1s impossible, use "Z" twist thread in the needle. For bobbin thread,
"S" twist thread as well as "Z" twist thread can be used.
4) How to route the upper thread (Fig.lO, Fig.ll):
A Pass each upper thread through thread guide A
Note: when thin slippery thread (polyester thread for example) is used pass the thread through
thread guide
Bas show in Fig.lO
B With the take-up lever located at the upper most position, pass each thread in the order in Fig.ll.
Note: Pressing the upper thread lt:t~sening button, the upper thread can be pulled out easily.
A 8 A 8 Needle thread
tension releasing button
Lead the Lead the
thread thread
leftward rightward
5) Adjustment of stitch length and reverse sewing (Fig.12):
A Rotate the stitch length adjusting dial to change the stitch length
B Pressing the stitch length adjusting lever for reverse stitching.
6) Setting bobbin (Fig.13):
-4-
Fig.ll
From the library of: Diamond Needle Corp

Leading the lower thread and install the bobbin
Pull out thread from side A, then install the bobbin case, Threading following CD-®; Put the bc,obin case
to rotating hook, then replace hook shaft; Press the bobbin bar, leading the lowerthread over bedplate.
7) Threading of bobbin threads (Fig.14)
While holding the two needle Threads by left hand, rotate the hand-wheel one turn by right hand. By
pulling up the needle threads, as shown in the figure, the bobbin threads will be lifted. Each combination of
bobbin thread and needle thread should be aligned and led backward.
8) Tension adjustment of bobbin threads (Fig.15)
9) Balance of thread tension (Fig.16)
10) Needle thread tension (Fig.17)
Needle thread tension should be adjusted in reference to
bobbin thread tension. To adjust needle thread tension, tum
each tension adjusting nut. Needle thread tension can be
also adjusted for special fabric and thread by changing
intensity and movable range of slack thread adjusting spring.
11) Adjustment of pressure of presser foot (Fig.18):
Tension
adjusting
screw
AQ/"~33~
Balance tension
BX ~~~I~
E:= Ti;h't needle or loose
bobbin tension
cx.<~----1
bobbin tension IFig.l6
~---
1
~~-r~
}(-~·
! (
A Pressure should be adjusted according to the material to be sewn.
-5-
From the library of: Diamond Needle Corp

B Turning the pressure adjusting screw to adjust the pressure of presser foot
12) Timing between rotating hook motion and needle motion (Fig.19):
A Set stitch length to "6";
B When needle is lifted 2.4mm from the lower dead point,
the following position relationship should be maintained:
a. The upper edge of needle eye should be 2.3mm below
the hook point
b. The hook point should be located at the center of
needle axis.
c. Gap between the hook point and the side face of
needle should be 0.05 mm
13) Adjustment of Feed dog height (Fig.20):
Height of feed dog should be adjusted for individual fabrics
with the following cautions:
·--------~--------,
Gap between hook point and upper edge of
needle eye
LS~
..... , .. \=:~~
2.4rm1 from ___:.·
needle lower
dead point
Center of
needle uis
A Fabric will be damaged if the feed dog extends too high or pressure of presser foot is too large
B Even stitch length cannot be assured
if the feed dog is too low or
pressure
of presser foot is too small
C Feed dog height should be measured at the point where the needle
is at the top position.
For light fabric: Approx 0.8mm
For usual fabric: Approx l.Omm
For heavy fabric: Approx 1.2mm
Adjustment procedure:
A Lay down the machine bed toward the other side;
w~I0.8mm
1
~11.0mm
a~m I 1.2mm
IFig.20
B Turn the balance wheel by hand stop when the feed dog is raise to its highest position from the surface
of needle place;
C Loosen the Screw and adjust the height of the feed dog;
D After adjusted, tighten the screw.
The feed dog height is factory-adjusted to 1.2mm
14) Adjustment the needle stop position ( 00 21 ):
A Loosen the needle bar ScrewA;
B Rotate the needle clamp B one circuit (amount
of Adjustment is
0.6mm), or loosen the needle bar screw C, rotate position screw D
halfa circuit (amount
of Adjustment is 0.3mm)
Needle bar screw ,__ ~
Needle bar screw A_.,.
Position screw o
Needleclamp B
~0
~
Fig.21
C Be sure to make the needle clamp facing left side, tighten needle bar screw C and A
-6-
From the library of: Diamond Needle Corp

15) Needle bar stop position (left & right) (Fig.19):
A Stop the motion of left-side needle bar:
Make the stopper wrench to the position L
B Stop the motion of right-side needle bar:
Make the stopper wrench to the position R
C Two needles running at the same time:
Return the needle bar
of left or right from standstill to
running: Press down restore plate, stopper wrench
restore to 0 position automatically
16) Walking foot and presser foot vertical stroke
adjustment (Fig.23):
When fabric with large elasticity is sewn, or when thickness of
fabric changes, the vertical stroke (movable range) of the
presser feet should be adjusted
as follows:
A Loosen the special bolt;
B The vertical strokes of presser feet become mtmmum
when the crank rod is moved downward and set;
C The vertical strokes of presser feet become mtmmum
when the crank rod is moved upward and set;
D After the adjustment, tighten the special nut.
Special bolt Crank
Crank rod
The vertical strokes of presser feet can be adjusted within a range from 2mm to 6mm.
17) Relationship between rotating hook motion and take-up lever motion (Fig.24)
Fig.22
When
the timing belt (toothed belt) was removed for its replacement, for example, the relationship between
rotating hook motion and take-up lever motion should be
adjusted
as follows:
A Tum the balance wheel and stop when the take-up lever is
lifted
to its upper dead point.
B Lean the machine head backward and make sure the arrow
(timing mark) put on the timing belt is in line with the black
line on the boss
of lower shaft bearing.
C If the timing mark is not in line with the black line, remove
the timing belt and install it again to adjust.
18) Relationship between hook motion and opener motion (Fig.25)
Timing mark
Timing belt sprocker
Fig.24
A Tum the balance wheel by hand and stop when the opener holder is located most remotely from the
-7-
From the library of: Diamond Needle Corp

B
throat plate.
Make sure gap between the bobbin case
the opener is approximately 0.2mm.
holder A and
C If the gap is too large or small, loosen the opener holder
set screw B and adjust position
of the opener.
19) Relationship between needle motion and feed dog
motion
A Set feed length to "0" on the feed setting dial
B Lean the machine head backward. (Fig.26)
C Loosen the feed lifting rockshaft crank set screws A and B
D Set the needle at the lowest position. Adjust the distance
between presser rod and vibration prevention rod
to 9mm
and temporarily tighten the feed lifting rockshaft crank set
screws A and B.(Fig.27)
E Check that the right feed lifting rockshaft crank is
connected with the link at right angle,
as shown in Figure.
F
If the connection is not at right angle, remove the back
cover, loosen screw C and move the right link
to connect
Approx 0 2mm
Feed lifting rock Feed lifting rock
shaft crank (middle) shaft crank (right)
A
B
the right feed lifting rock shaft with the link at right angle.(Fig.28)
G After the completion
of adjustment, fully tighten the screws A , B and C.
Fig.25
• At this time make certain that needle can enter the feed
dog needle hole at the center of the hole.
Needle rod
Vibration
prevention
rod
Fig.27
20) Safety clutch device (Fig.21, Fig.22) :
Feed lifting rock
shaft crank (right)
Safety clutch device is installed to prevent the hook and cog belt from damage in case the
-8-
From the library of: Diamond Needle Corp

thread is caught into the hook when the machine is loaded abnormally operation.
A Function ofsafety clutch:
a. When the safety clutch acts, the cog belt pulley will be
unloaded. Then the rotation
of hook shaft will stop. The
ann shaft only will rotate. Stop the operation
of
machine.
b. Clean the thread thoroughly which is caught into the
hook.
c. Turn the cog belt hub by hand, and check whether the
Push
button
hook shaft rotates lightly and properly, place the clutch device as follows.
B How to set the safety clutch (Fig.29)
a. While pressing down the push button on the
opposite side ofbed by left hand, turn the balance
wheel slowly by right hand away from you;
b. The balance wheel will stop by the gear plate, but
turn the balance wheel more firmly;
c. Release the push button, the safety clutch device
is set.
C Force applied to the safety clutch (Fig.30)
White mark
Timing Be~
Eccentric Pin
Set Screw
Low Shaft
Eccentric Pin
Fig.29
Fig.30
a. The force applied to the safety clutch is the smallest when the mark of ec<;,entric pin faces the
center
of the lower shaft. The force proportionally increases as the mark faces the outside;
b. To adjust the force slide the timing belt, loosen the set screw, and turn the eccentric pin;
c. After the adjustment, tighten the set screw.
21) Adjustment
Screwing the pin that connects the link ofback-sewing with the crank of back-sewing (down) can adjust the
tolerance ofbetween the stitches.
Screwing the pin in clockwise
can mcrease the stitch of
forward sewing; otherwise, the
stitch
of back-sewing will be
increased.
22) Installation of movable
knife
Thread trimmer
roc~Jng crank
-9-
Fig.31
From the library of: Diamond Needle Corp

A Installation of movable knife (Fig.31)
a. Tum the balance wheel and lower the needle bar to the
lowest position.
b. Push the cam follower crank so that the cam roller enters
into the thread trimmer cam groove.
c. Tum the balance wheel until the black mark point on the
arm meets the white mark point on the balance wheel. Set
the cam follower crank at this position with a screwdriver
temporarily preventing the cam roller coming out from the
cam groove.
d. Loosen the thread trimmer rocking crank clamp bolts A and B.
Monable
knife
e. Adjust the movable knife so that the movable knife end slant portion protrudes 0-0.5 mm from the
fixed knife,
as shown in Figure and tighten the bolts A and B.
B Gap between movable knife and bobbin case holder stopper (Fig.32)
a. Tum the balance wheel byhand until needle reaches the Lowest position.
b. With the needle at the lowest position, depress cam follower crank, turn the balance wheel until
the movable knife reaches the extremity
of its stroke.
c. Manually rotate the inner hook in the direction indicated by arrow in Figure and adjust gap
between the movable knife and the inner hook stopper to about
0.5 mm (the screws A and B
should be loosened for this adjustment).
23) Adjustment of thread trimmer cam
A Turn the balance wheel by hand until the needles reach the lowest position.
B Maintaining the needle position, depress the cam follower crank and put the cam roller into the groove
of thread trimmer cam.
C Turning the balance wheel by hand, adjust the thread trimmer cam so that the movable knife starts
moving when the green mark point on the balance wheel comes in line with the black mark point on
the
arm.
Cam follower
crank
Cam roller
Thread trimmer cam
-10-
Green mark point
Black mark
point
Fig.33
From the library of: Diamond Needle Corp

Note: To adjust, Loosen two thread trimmer cam clamp screws A
24) Adjustment of needle threads tension release assembly (Fig.34)
A Turn the balance wheel by hand until the needles reach the lowest position.
B Maintaining the needle position, depress the cam follower crank and
put the cam roller into the groove
of thread trilThller cam.
C Turning the balance wheel by hand, adjust the thread tension release cam so that the tension disc close
when the white mark point on the balance wheel comes in line with the black mark point on the arm.
D
To adjust, loosen two tension release cam clamp screws A
E Opening degree
of tension disc should be adjusted with the tension release roller B mounted on the
convex portion
of thread release cam, as shown in Fig. To·adjust, loosen the screws C and draw the
wire.
F Make fine adjustment by loosening the nut D.
G Loosen the nut D and make the outer casing approach rightward to increase the opening value.
Thread
release cam
'
Thread trimmer
cam
Screw C:
White park point
point
Nut D
25) Adjustment of scissoring pressure of movable knife and fixed knife (Fig.35)
A Loosen the fixed knife bracket clamp bolt A
Fig.34
B Tum the vertical position adjusting screw B to adjust meshing pressure and then righter the hexagon
socket head cap screw A
Note: Since excess pressure causes large torque
to the thread
trimming mechanism and trimming failure, adjust it
so
that thread can be trimmed with minimum pressure.
C Move the movable knife and check that the thread can be
sharply trimmed.
-II-
Fig.35
From the library of: Diamond Needle Corp

26) Sharpening of fixed knife
When the knives dull, the fixed shovld be sharpened as illustrated in Fig. Since it is very difficult to sharpen
the movable knife, replace it with a
ne\V one when it dulls (Fig.36).
27) Adjustment for change of needle-to-needle dishuu:e (Fig,37)
A Replace the throat plate, feed dog and needle clamp. (Since the r
throat plate and feed dog are special parts designed for thread
trimming machine, be sure to use those specified by us.)
B Lean the machine head backward.
C Loosen two connecting link clamp bolts J.
D Remove the spring M.
E Loosen the hook bracket clamp screws A and B and adjust gap
between each needle and hook.
F When the needles and hooks have
been adjusted, install the spring M.
G Contact the rocking cranks C and D
to the stopper pins E and F and
tighten the connecting link clamp
bolt
J.
H Turn the balance wheel by band until
the needles reach the lowest
position.
Loosen the nuts G and H.
Cnnner.tino
link
Hook bracket
(left)
Screw B
Screw B
Lower
shaft
Fig.37
J Depress the cam follower crank K and adjust the connecting rod L so that the cam roller can smoothly
enter the groove
of thread trimmer cam.
Adjustment ofthe cam groove and the cam roller
A Push the cam follower crank K so that the cam roller enters into the cam groove.
B Tum the connecting rod L and adjust the clearance between the
cam roller and the cam groove surface
Las small as possible, and tighten the nuts G and H.
C Push the cam follower crank K again and check that the cam roller enters into the thread trimmer cam
groove smoothly.
-12-
From the library of: Diamond Needle Corp

A.ARM BED MECHANISM
2 3 4 (2) 5 6 8 9
10
11
I
40 39 38 37 36 35 (33) 34 33 32 31 30 29
15 14 13 12
-- 13-
From the library of: Diamond Needle Corp

A.ARM BED MECHANISM
00
I9 I I
Fig.
M
00
Part No.
Description
\C M
0 I!::
rleniarL;:-;
No.
S''
c:,;
'
\,~
N I
0 u
0
AOI
HA300B2090 Rubber plug 2 2 l
A02 HA300B2170 Screw
15 15 Si"li 1104 ( 40) xlj
'
A03 H4716B8001 Oil guide plate 1 ' 1
A04 H4717B8001
1bread take-up cover 1 1
A05 H4715B8001 Rubber plug 1 1
A06 H4718B8001 Arm side cover (left) 1 1
A07 H2000B2010 Rubber plug 1 1
A08 H4719B8001 Arm side cover (right) 1 1
A08 H4919B8001 Side cover (right) I 1
A09 HA700B2060 Screw 2 2
SMll/64 (40) x8
AIO H2400B2100
1bread guide I 1
All
HA307B0673 Rubber plug 1 1
Al2
H4715H8001 Push button 1 1
A13 H4714H8001 Spring 1 I
Al4 H007013050 E-type ring 1 1
A15 H2000M0090 Cap 2 2
A16 H3200B2100 Screw 1 1 SM9/64
(40)
x6.5
Al7 H3212B0066 1bread guide 1 1
Al8 H3000D2160 Screw 1 1 SM9/64
(40) x4.5
Al9 H4726B8001
1bread guide 1 1
A20 H0213B8001 Face plate 1 1
A21 H2400B2080 Screw 2 2 SM3/16 (
28) X 12.1
A22 H2400B2070 1bread guide 1 1
A23 H0212B8001 Shaft supporter I 1
A24 H2400B2060 Spacer 1 I
A25 H3200B2060 Oil guide plate I I
A26 HA7311C606 Screw 2 2 SM11164(40)x
15
A27 H602030200 Pin 2 2 A
A28 HA100B2110 Screw 2 2 SM11/64(40)x5.5
A29 H3219B0067 Slide plate complete 1
A30 H3200B2170 Screw 1 SMI3/64
(32) x4.8
A31
H4912B8001 Screw 2 SM1/4
(24) x9
A32 H4913B8001 Supporter I
A33 H4914B8001 Screw 4 SM9/64
(40) x6
A34 H4915B8001 Cover I
A35 H4911B8001 Cover I I
A36 H4733B8001 Slide plate(right) I 1
A37 HA300B2190 Screw I 1 SMI J/64
(40) x8
A38 H4740B8001 Needle plate 1
A38 H4741B8001 Needle plate 1
A38 H4940B8001 Needle plate I
A38 H4941B8001 Needle plate 1
A39 H3200B2120 Screw I I SM9/64
(36) x6.5
-14-
From the library of: Diamond Needle Corp

A.ARM BED MECHANISM
0()
9
Fig.
,...,
0()
\0
M
Part No. Description 0
\0
Remarks
No. N 0
u N
C)
u
C)
A40 H4746B8001
Slide plate(left) 1 1
-15-
From the library of: Diamond Needle Corp

B. THREAD TENSION REGULATOR MECHANISM
1 2 3 4 8 9
10 11 12 13
48 47 46 45 44 43 42 41 40 39 38 37 36 35
-16-
14 15 16 17 18
34 33 32 31 30
26
27
28
29
From the library of: Diamond Needle Corp