Reliable MSK-8900M User manual

MSK-8900M

Industrial Sewing Machine

INSTRUCTION MANUAL

1. Brief introduction 1

2. Main specifications 1

3. Main parts name 1

4. The method of installation 1 5

5. Pareparation before sewing 5 7

6. Sewing 7 8

7. Adjusting the tension of thread 8

8. Maintenance 9 10

9. Correct adjustment 10 13

1. Machine casting components 14 15

2. Needle bar, thread take-up components 16 17

3. Presser foot components 18 19

4. Feed components 20 23

5. Rotary hook components 24 25

6. Lubrication components 26 27

7. Accessories 28 29

CONTENTS

Operation instruction

Parts manual

OPERATION INSTRUCTION

Needle bar

Thread take-up lever cover

Oil window

Hand wheel

Stitch dial

Feed lever

Pressure adjusting screw

Bobbin winder

Belt guard

2a2a

1. Installing the oil pan (Fig. 2)

(1) Put the vibration-proof pad (black) and

(double color) under the four corners of oil pan ;

2. Main specifications

1. Brief introduct oni

MSK-8900MMSK-8900M MSK-8900HMSK-8900H

Medium - and

heavy - weight

materials

ModelModel

Applications

Max. Sewing speed

Needle bar stroke

Max. Stitch length

Hook

Needle

Height of feed dog

Lubrication

Motor power

4200.s.p.m.

4.2mm 5mm

31mm

DB 1 14#

0.8mm 1.2mm

Automatic lubrication

3500.s.p.m.

35mm

DB 1 21#

370W

Heavy - weight

materials

Small auto - lubricating hook

Presser foot lift

height

6mm by hand

13mm by knee

MSK-8900M/H high speed straight lockstitch

sewing machine adopts single needle, needle bearing

link to take up thread, small hook to catch loop

which forms lockstitch seam. It features high precise

bevelgear for driving upper and lower shafts, dial

stitch length regulator, lever type forward and reverse

feed mechanism, full automatic lubricating system

assures reliable lubrication.

With the features of reasonable design, beautiful

apperance, precisely manufacture, little vibration

and lower noise, it s a good machine for the makers

of garments, suitcase, leather goods, shoes and caps,

etc.

3. Main parts name (Fig. 1)

4. The method of installation

2 3 4

(2) Put the oil pan into the cutouts of table

(3) put the machine casting hinge cushion into

the cutouts of table and fix it by nails .

and

fix it by nails ;

2. Installing the machine head (Fig. 3)

(1) Insert the knee lifting rod ;

(2) Insert the casting hinge to the hole in the

bed;

(3) Put the hinge in the cushion and put the

head on the pad ;

(4) Inset the machine head supporter in the table.

Notice:

Be sure to full inset the supporter in the table

Otherwise it may cause danger while put the

machine head down.

2b2b

3. Installing the knee lifter (Fig. 4)

Install the knee lifter on the knee lifter hinge

shaft and fix it by screw .

5. Installing the V-belt (Fig. 6)

(1) Lower the machine head and install the belt

on the hand wheel and motor pulley;

(2) Press the belt by forefinger with the power

of 4.9N (500gf), adjust the nut to make the belt

a slack of 10~14mm.

4. Adjusting the knee lifter mechanism (Fig. 5)

(1) Lay down the presser foot lifting bar to

lower the presser foot ;

(2) Loosen the nut ;

(3) Press the knee lifter plate cover to make

movement amount of the knee lifter positioning

bracket about 2mm, then adjust the screw ;

(4) After adjustment, tighten the nut .

(5) Loosen the nut ;

(6) Adjust screw to make its length above the

bracket 8mm;

(7) Adjust screw , the clearance between presser

foot and needle plate should be less than 13mm when

the knee lifter is pressed to its maximum position;

(8) After adjustment, tighten the nut .

9a9a

¡«¡«

6. Connecting pedal with lever of clutch motor (Fig.7)

(1) The optimum tilt angle of pedal A against floor

is approx.20 ~30 .

(2) Adjust the clutch of motor E to make the rod B

and the clutch lever C run in one line.

(3) When runing, the machine balance wheel G

should rotate counter - clockwise observed form

opposite side of the balance wheel, the motor D

rotates in the same direction. The rotation of motor

can be reversed by reversing the plug of power ( turn

over 180 )

(4) Adjust the tension of V-belt F by moving the

motor upward or downward. The proper tension of

V-belt is a slack of 10~12mm when the V-belt is

depressed by forefinger.

7. Installing the bobbin winder (Fig.8)

(1) Press the winding controlling lever to its

utmost position;

(2) Install the winder parallel with the belt hole in

the table, be sure that the belt

restores its original position,

be sure that the clearance between winder pulley

and belt is 8mm.

can be pressed to

5mm by winder pulley ;

(3) Fix the winder by two wooden screw ;

(4) When the lever

8. Installing the belt guard (Fig.9)

(1) Install the three screws on the machine

casting, please don't tighten the screws too tight.

10~1210~12

-a

-b

-c

9b9b

1010

1111

Long grooveLong groove

FrontalFrontal

5. Preparation before sewing

(2) Lay down the machine head and install the belt

guard in the screw bar and screw , tighen the

scr w -a.

(3) Raise the machine head and tighten the screw .

(4) Aim the gib of upper belt guard to the screw

-b, and cover the hand wheel by upper belt guard .

(5) Fix the upper belt guard by screw -b, -c

and .

(6) Install the lower belt guard and there should be

a overlap of 2 3mm with belt guard , tighten the two

screw .

(7) Insert the plate between belt guard and .

(8) Move the plate along the groove of belt guard

as far possible.

(9) Be sure that there should be not any clearance

between belt guard and plate .

(10) Tighten the two screws (refer to step ).

9. Oiling

(1) Please pull out the power plug to avoid hurting;

(2) lay down the machine head and fill the oil in the

oil pan till to the mark of HIGH

Notice:

Please use sewing oil 18#

Please replenish the oil when the level of oil

approaches to the mark of LOW

1. Installing the needle (Fig. 11)

(1) Turn the hand wheel to lift the needle bar to

its highest position;

(2) Loosen the needle set screw ;

(3) Make the needle groove to the left side of the

operator, then fully insert the needle shank until to

the bottom of the needle bar socket, tighten the set

screw .

-b

-c

1313

1212

1414

2. Uninstalling the bobbin case (Fig. 12)

(1) Turn the hand wheel to lift the needle above

the needl plate;

(2) Open the opener and uninstall the bobbin

case;

(3) Release the opener and uninstall the bobbin

3. Winding the bobbin thread (Fig. 13)

(1) Turn the power on;

(2) Install bobbin to bobbin winder shaft ,

push the lever down to the utmost position;

(3) Wind the thread several circles on the bobbin

(4) When the machine running, the bobbin will

be wound;

(5) After winding, the lever will be released

automatically, then uninstall the bobbin.

If the thread is wound unevenly. Loosen the

screw and move the bracket to the side which

the thread is little wound.

The winding amount can be adjusted by

screw

Increase the amount tighten

Decrease the amount loosen

Please be sure the optimum capacity of thread is

filled about 80% of bobbin outside diameter

4. Install the bobbin case (Fig. 14)

(1) Put the bobbin into the bobbin case as Fig 14

shown;

(2) Draw the bobbin thread through the slit and

pass it under the lace spring plate l

(3) Draw the bobbin thread out of the slit at the

top of lace spring plate;

(4) Draw the thread and confirm if the bobbin can

turn;

(5) Hold the opener and put the bobbin case in

the hook.

1515

About 50mm

5. Threading the needle thread (Fig. 15)

Turn the hand wheel to lift the thread take-up lever to its highest position.

6. Adjusting the stitch length (Fig. 16)

(1) Turn the stitch dial to make the pin aim

at the number on the stitch dial.

The more big the number becomes, the more

long the stitch length is.

Please put the feed lever at the medium

position, then the dial can been turned easily.

6. Sewing

1. Sewing method

(1) Turn the switch on;

(2) The sewing begins after step the pedal

1616

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