HIGHLEAD GC24698-BRHL Bedienungsanleitung

GC24698-BRHL/BLHL

Long Arm Super Post Bed Compound Feed

Lockstitch Sewing Machine

Instruction Manual

Parts Catalog

SHANGHAI BIAOZHUN HAILING SEWING MACHINERY CO.,LTD.

───CONTENTS───

OPERATION INSTRUCTION

1. PRECAUTIONS BEFORE STARTING OPERATION ·············································································1

2. SPECIFICATIONS ········································································································································1

3. LUBRICATION··············································································································································1

4. PRECAUTIONS OPERATION ····················································································································2

5. INSTALLING NEEDLE································································································································2

6. WINDING BOBBIN THREAD·····················································································································2

7. THREADING ·················································································································································3

8. ADJUSTMENT OF STITCH LENGTH AND REVERSE SEWING ·······················································3

9. SETTING BOBBIN········································································································································3

10. ADJUSTMENT OF THREAD TENSION ···································································································4

11. ADJUSTMENT OF THE PRESSURE OF PRESSER FEET ····································································4

12. TIMING BETWEEN THE HOOK AND NEEDLE····················································································4

13. ADJUSTMENT OF THE HEIGHT OF THE FEED DOG ········································································4

14. ADJUSTMENT OF THE VIRTICAL STROKE WALK FOOT AND VIBRATING FOOT ··················5

15. TIMING BETWEEN THE NEEDLE AND HOOK····················································································5

16. SAFETY CLUTCH DEVICE························································································································6

PARTS CATALOG

A. ARM BED MECHANISM ··························································································································7

B. THREAD TENSION REGULATOR MECHANISM ·············································································9

C. ARM SHAFT&MIDDLE SHAFT MECHANISM ················································································ 11

D. PRESSER FOOT MECHANISM·············································································································14

E. NEEDLE BAR THREAD TAKE-UP MECHANISM ···········································································17

F. STITCH REGULATOR MECHANISM ·································································································20

G. LOWER SHAFT&FEEDING SHAFT MECHANISM ········································································22

H. HOOK SADDLE MECHANISM ·············································································································25

I. OIL LUBRICATION MECHANISM ······································································································27

J. ACCESSORIES ··········································································································································29

K. TOUCH BACK AND FOOT LIFT MECHANIS ··················································································31

—1 —

1. PRECAUTIONS BEFORE STARTING OPERATION

1) Safety precautions：

（1）When turning the power on, keep your hands and fingers away from the area around/under the needle

and the area around the pulley.

（2）Power must be turned off when the machine is not in use, or when the operator leaves the seat.

（3）Power must be turned off when tilting the machine head, installing or removing the “V” belt,

adjusting the machine, or when replacing.

（4）Avoid placing fingers, hairs, bars etc., near the pulley, “V” belt, bobbin winder pulley, or motor when

the machine is in operation.

（5）Do not insert fingers into the thread take-up cover, under/around the needle, or pulley when the

machine is in operation.

（6）If a belt cover, finger guard, eye guard are installed, do not operate the machine without these safety

devices.

2) Precautions before starting operation：

（1）If the machine’s oil pan has an oil sump, never operate the machine before filling it.

（2）If the machine is lubricated by a drop oiler, never operate the machine before lubricating.

（3）When a new sewing machine is first turned on, verify the rotational direction of the pulley with the

power on. (The pulley should rotate counterclockwise when viewed from the pulley)

（4）Verify the voltage and (single or three) phase with those given on the machine nameplate.

3) Precautions for operating conditions：

（1）Avoid using the machine at abnormally high temperatures（35 or highe℃r）or low temperatures（5℃

or lower）.

（2）Avoid using the machine in dusty conditions.

2. SPECIFICATIONS

Model GC24698-BRHL/BLHL

Max.sewing speed 800r.p.m

Stitch length 10mm

Presser-foot stroke 8mm By hand 16mm By pneumatic

Needle size DP×17 17# -23#

Lubrication system Manual lubrication

Highness of post-bed 670mm

Motor 550W Sevor motor

3. LUBRICATION(Fig.1,Fig.2,Fig.3,Fig.4)

When a new sewing machine is used for the first time, or sewing machine left out of use for considerably long

time is used again, replenish a suitable amount of oil to the portionsindicated by arrow in the below figure.

Filling the oil to the fount timely.

—2 —

Note:Filling the oil to the hook saddle everyday during operation.

See dripping of oil through the oil window to check oiling condition during operation.

4. PRECAUTIONS OPERATION

（1）When the power is turned on or off, keep foot away from the pedal.

（2）It should be noted that the brake may not work when the power is interrupted or power

failure occurs during sewing machine operation.

（3）Since dust in the control box might cause malfunction or control troubles, be sure to keep the

control box cover close during operation.

5. INSTALLING NEEDLE

Note: Before installing the needle, be sure to turn off the power.

To install the needle, turn the machine pulley over toward operator(or

counter-clockwise) until the needle bar moves up to its highest point,

put the needle up into the needle bar as deeply as it will go, with the

long groove of the needle faced left side.Tighten the needle set screw

securely.

6. WINDING BOBBIN THREAD(Fig.5)

Note:When bobbin thread is wound, keep the presser foot lifted

Thread tension ：Particularly in the case of nylon or polyester

thread,wind the bobbin loosely.

（1）Press the bobbin onto the thread winding shaft.

（2）Pass the thread for winding thread as shown in the figure,

and wind the end of the thread clockwise around the bobbin several

times, then wind the thread on the thread adjuster side counter-clock

wise several times.

—3 —

（3）Press lever 1 in the direction of the arrow, and start the sewing machine.

（4）The operation will automatically stop when winding is completed.

（5）Adjustment of thread winding strength, adjust with the thread adjuster nut 2.

（6）Adjustment of thread winding amount, adjust by loosening screw 3 and moving adjustment plate 4:

The thread winding amount will increase when moved in the direction of a.

The thread winding amount will decrease when moved in the direction of b.

7. THREADING(Fig.6,Fig.7)

（1）Pass each needle thread through thread guide A.

Note:When thin slippery thread(polyster thread) is used pass the thread through thread guide B as

show in Fig.6.

（2）Thread take-up lever to the highest position,pass each thread in the order in Fig.7.

Note:Pressing the tension releasing button ,the thread can be pulled out easily.

8. ADJUSTMENT OF STITCH LENGTH AND REVERSE SEWING(Fig.8)

Rotate the stitch length dial to change the stitch length.

When press the feed reversing lever or press the touch-back, reverse sewing will take place.Loose the lever or

touch-back, reverse sewing will disappear.

9. SETTING BOBBIN(Fig.9,Fig10)

Pull out the thread from the bobbin,then hold the bobbin into the bobbin shaft and push down the hinge latch.

—4 —

Hold the needle thread by hand,turn the pulley a circle by right hand.By pulling up the needle thread,the bobbin

thread will be lifted.Combination of bobbin thread and needle thread should be aligned and led back ward.

10. ADJUSTMENT OF THREAD TENSION(Fig.11,Fig.12,Fig.13)

There is virtually no need to adjust the bobbin

thread tension, except for special kind of the

thread, when slight adjustment will be

necessary.

Turning the screw 1 clockwise will increase

the tension of lower thread, otherwise, the tension of lower thread will

decrease (Fig.12).

Needle thread tension should be adjusted in reference to bobbin

thread tension.The needle thread tension can be adjusted by thread

tension adjusting nut.

11. ADJUSTMENT OF THE PRESSURE OF

PRESSER FEET(Fig.14)

The pressure of the presser feet is regulated by the adjusting screw.

To increase the pressure, turn the screw to clockwise, and decrease it, turn the screw to counter-clockwise.

12. TIMING BETWEEN THE HOOK AND NEEDLE(Fig.15)

（1）Set the stitch length to “6”on the feed setting dial.

（2）When the needle is lifted 2.4mm from the lower dead

point,the following positional relationship should be maintained:

a.The lower edge of needle eye should be 2.3mm below the

hook point.

b.The center of the needle the hook point is on a line.

c.Gap between the hook point and the side face of needle

should be 0.05mm.

13. ADJUSTMENT OF THE HEIGHT OF

THE FEED DOG(Fig.16)

The height of the feed dog should be adjusted for different

materials:

（1）If the feed dog is too high,or the pressure of presser foot

is too large,the materials will be damaged.

—5 —

（2）If the feed dog is too low,or the pressure of presser foot is too small, the stitch length cann’t be

assured.

（3）Feed dog height should be measured at the point where the needle is at the top position.

Thin material:The height of the feed dog is 0.8mm.

Usual material: The height of the feed dog is 1mm.

Heavy material: The height of the feed dog is 1.2mm.

Adjustment procedure:

（1）Lean the machine head backward.

（2）Turn the pulley by hand and stop when the feed dog rises to the maximum height.

（3）Loose the feed bar forked connection set screw and adjust the height of the feed dog.

（4）After adjusted, tighted the set screw.

Note:The feed dog height is factory-adjusted to 1.2mm.

14. ADJUSTMENT OF THE VIRTICAL

STROKE WALK FOOT AND VIBRATING

FOOT(Fig.17)

When the material with large elasticity is sewn,or when thickness of

material changes,the vertical stroke of the presser feet should be

adjusted as follow:

（1）Loosen the special screw.

（2）The vertical strokes of presser feet become minimum when

the crank rod is moved downward and set.

（3）The vertical storkes of presser feet become minimum when

the crank rod is moved upward and set.

（4）After the adjustment,tighten the special nut.

Note:The vertical strokes of presser feet can be adjusted within a

range from 2mm to 6mm.

15. TIMING BETWEEN THE NEEDLE AND

HOOK(Fig.18,Fig.19,Fig.20)

（1）Set the stitch length to “0”on the feed setting dial.

—6 —

（2）Lean the machine head backward.

（3）Loosen the feed lifting rock shaft crank set screw A and B.

（4）Set the needle at the lowest position.

（5）Adjust the distance between presser bar and vibration bar to 8mm and temporarily tighten the feed

lifting rock shaft crank set screw A and B.

（6）Check the right feed lifting rock shaft crank is connected with the link at right angle,as shown in

Fig.19.

（7）If the connection is not at righr angle,remove the back cover,loosen screw C .

（8）And regulate the right angle.

（9）After the complention of adjustment,fully tighten the screwA,B and C.

Note:At the same time the make sure that the position between the needle and the feed dog.

16. SAFETY CLUTCH DEVICE(Fig.21,Fig.22)

Safety clutch device is installed to prevent the hook and belt from damage in case the thread is caught into the

hook when the machine is loaded abnormally during operation.

（1）Function of safety clutch

a.When the safety clutch operate,the belt pulley will be unloaded,the lower shaft will stop.Only the arm

shaft operate.The machine stop operation.

b.Clean the thread thoroughly which is caught into the hook.

c.Turn the belt bushing by hand,check the lower shaft rorates lightly.Then set the clutch device in the

starting position.

（2）Set the safety clutch

a.While pressing down the push botton on the bed by left hand,turn the pulley slowly by right hand away

from you as shown in Fig.21.

b.When the belt pulley stopped by the gear plate,then turn the pulley more firmly.

c.Release the push botton,the safety cluth device is set.

（3）Force applied to the safety clutch

a.The force applied to the safety clutch is the smallest when the mark on the eccentric pin faces the center

of the lower shaft.The force proprotinally increases as the mark faces the outside.

b.To adjust the force slide the belt,loosen the set screw,and turn eccentric pin.

c.After the adjustment,make sure to fasten the set screw.

A.ARM BED MECHANISM

— 7 —— 7 —

Fig.

No. Part No. Description

GC24698-BRHL

GC24698-BLHL

Remarks

A01 HA300B2090 Rubber cap 22

A02 HA300B2170 Screw 19 19 SM11/64(40)×8

A03 H4716B8001 Oil guard plate 11

A04 H4717B8001 Thread take-up cover 11

A05 H4715B8001 Rubber cap 1 1 Ф13

A06 H4718B8001 Arm side cover (left) 11

A07 H2000B2010 Rubber cap 1 1 Ф13

A08 HA700B2060 Screw 2 2 SM11/64(40)×8

A09 H2400B2100 Thread guide 11

A10 H7007D7101 Bobbin winder 11

A11 HN41B38001 Arm side cover 11

A12 H7014D7101 Thread tension complete 11

A13 H0113B8001 Rubber cap 1 1 Ф36.5

A16 HA307B0673 Rubber cap 1 1 Ф18

A17 H7010E8001 Pin 11

A18 H3212B0661 Thread guide 11

A19 HA124B0713 Screw 2 2 SM3/32(56)×2.2

A20 H2407B2023 Felt 11

A21 H2407B2022 Plate 11

A22 H3200B2100 Screw 1 1 SM9/64(40)×6.5

A23 H3000D2160 Screw 1 1 SM9/64(40)×7

A24 H4726B8001 Thread guide 11

A25 H4727B8001 Face plate 11

A26 H2400B2080 Screw 2 2 SM3/16(28)×10

A27 H2400B2070 Thread guide 11

A28 H4730B8001 Guide mounting plate 11

A29 H2400B2060 Plate for oil guard 11

A30 H3200B2060 Oil guard 11

A31 HA300B2090 Rubber cap 11

A32 H3207B0066 Arm side plate(right) 11

A33 HN41B58001 Rubber cap 11

A35 H2000M0090 Oil cup 33

A36 HE956B8001 Bed bolt 11

A.ARM BED MECHANISM

— 8 —

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