JUKI MF-7500-E11 Bedienungsanleitung

INSTRUCTION MANUAL

MF-7500-E11

CONTENTS

1. SPECIFICATIONS........................................................................................................................ 1

2. DRAWING OF TABLE (SEMI-SUBMERGED TYPE) .................................................................. 2

3. INSTALLATION OF THE DUST CHUTE ..................................................................................... 3

4. OPENING AND CLOSING THE COVER..................................................................................... 4

5. ADJUSTMENT PROCEDURE OF THE KNIFE PRESSURE ...................................................... 4

ADJUSTMENT PROCEDURE OF KNIFE CUTTING POSITION.............................................................. 5

7. ADJUSTMENT PROCEDURE OF ENGAGEMENT AMOUNT OF KNIVES ............................... 5

8. REPLACEMENT PROCEDURE OF MOVING KNIFE AND FIXED KNIFE................................. 6

9. OILING ......................................................................................................................................... 6

10. ADJUSTMENT PROCEDURE OF FRONT-UP AMOUNT OF THE PRESSER FOOT ............... 7

11. ADJUSTMENT PROCEDURE OF THE POSITION OF THE TAPE GUIDE ............................... 7

12. ADJUSTMENT PROCEDURE OF THE WIDTH OF THE TAPE GUIDE ..................................... 7

13. ADJUSTMENT PROCEDURE OF THE FABRIC PRESSER ...................................................... 7

14. ADJUSTING THE ANGLE OF MESH OF THE KNIFE ................................................................ 8

– 1 –

1. SPECIFICATIONS

Model MF-7500-E11

Class name With fabric undertrimmer for elastic tape attaching

Sewing speed

Max. 6,000 sti/min (5,000 sti/min with MD) (at the time of intermittent operation)

Speed of stitch at the delivery. 4,000 sti/min (at the time of intermittent operation)

Needle gauge 3-needle 5.6 mm, 6.4 mm

2-needle 4.0 mm

Differential feed ratio 1 : 0.7 to 1 : 1

Stitch length 0.9 to 3.6 mm (Adjustable up to 4.0 mm)

Noise -

Equivalent continuous emission sound pressure level (LpA) at the workstation :

A-weighted value of 76.5 dB; (Includes KpA = 2.5 dB); according to ISO

10821- C.6.2 -ISO 11204 GR2 at 4,000 sti/min.

– 2 –

2.DRAWING OF TABLE (SEMI-SUBMERGED TYPE)

Y-Y(3 locations）

Z-Z(4 locations)

A 4 x ø3.4 on the bottom surface, depth 20 (Drill a hole at the time of set-up.)

Drilled hole 17

C 2 x ø3.4 on the bottom surface, depth 10 (Drill a hole at the time of set-up.)

D 4 x 10.5 hole, depth 26, spot facing depth 3.5

E C5 (urban white, at and gloss 50 coatings are applied after nishing)

F 3 x ø3 on the bottom surface, depth 10 (Drill a hole at the time of set-up.)

– 3 –

3.INSTALLATION OF THE DUST CHUTE

1) Install dust chute ❶with two wood screws ❷.

❶

❷

❸

❹

❺

❻

❺

2) Install dust chute bracket ❸with three wood

screws ❹.

3) Install dust chute A ❺with three screws ❻.

Dust chute A can be installed in two different

orientations.

– 4 –

Make the engagement pressure of moving knife

and xed knife as low as possible within the range

of smooth cutting of fabric.Loosen setscrew ❶of

thrust collar A and setscrew ❷of thrust collar B in

the written order. Shift thrust collar B to the right and

tighten setscrew ❷to increase the knife pressure.

Once the desired knife pressure is achieved, tighten

setscrew ❶.

5.ADJUSTMENT PROCEDURE OF THE KNIFE PRESSURE

When opening and closing main cover ❶, open it

on this side with slip cover ❷pressed to the right.

4.OPENING AND CLOSING THE COVER

A : Press to the right.

B : Open on this side.

4) Put dust chute B ❼on the claws of dust

chute A ❺ to x it.

❺

❼

❷

❶

❷

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-

ing work after turning the power off and ascertaining that the motor is at rest.

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-

ing work after turning the power off and ascertaining that the motor is at rest.

– 5 –

Adjust the distance between the right-hand needle

and cutting position as described below.

1) Loosen setscrew ❶, turn adjustment screw ❷,

and laterally adjust moving knife ❸and fixed

knife ❹.

❸and ❹move to the left when adjustment screw

❷is turned clockwise, and to the right when it is

turned counterclockwise.

2) After the adjustment, tighten setscrew ❶.

3) After the adjustment of the knife width, readjust

the spring pressure.

ADJUSTMENT PROCEDURE OF KNIFE CUTTING POSITION

❶

❷

❸

❹

1) Loosen setscrew ❷at the position where moving

knife ❶is fully lowered and make a state that

moving knife ❶can be moved up and down.

2) Adjust the engagement amount of moving knife ❶

and xed knife ❸to approximately 0.5 mm from

the top end of moving knife, and tighten setscrew

❷.

7.ADJUSTMENT PROCEDURE OF ENGAGEMENT AMOUNT OF KNIVES

0.5mm

❶

❷

❸

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-

ing work after turning the power off and ascertaining that the motor is at rest.

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-

ing work after turning the power off and ascertaining that the motor is at rest.

– 6 –

When replacing moving knife ❶, remove screws ❷

and guard ❸. Then remove screw ❹and replace the

moving knife. When replacing xed knife ❺, loosen

screw ❻ and remove xed knife ❺for replacement.

8.REPLACEMENT PROCEDURE OF MOVING KNIFE AND FIXED KNIFE

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-

ing work after turning the power off and ascertaining that the motor is at rest.

❶

❹

❸

❷

❺

❻

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-

ing work after turning the power off and ascertaining that the motor is at rest.

9.OILING

❶

❷

Be sure to apply a few drops of oil to oil wick ❷of

moving knife driving link ❶before using the sewing

machine for the rst time after the delivery or using it

after an extended period of disuse.

For the lubricating oil, use JUKI GENUINE OIL 18.

– 7 –

Loosen setscrew ❼move tape guide ❻to the right and left to adjust the width of the tape.

❷

❸

❹

❺

❻

❼

❾

❽

❶󱢳

11.ADJUSTMENT PROCEDURE OF THE POSITION OF THE TAPE GUIDE

12.ADJUSTMENT PROCEDURE OF THE WIDTH OF THE TAPE GUIDE

13.ADJUSTMENT PROCEDURE OF THE FABRIC PRESSER

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-

ing work after turning the power off and ascertaining that the motor is at rest.

When sewing a thick rubber sheet or the like together, fabric can be smoothly fed by raising the front of

presser foot ❶. Loosen nut ❷, turn setscrew ❸to the right (clockwise), and raise the front ❶of presser

foot for adjustment.

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-

ing work after turning the power off and ascertaining that the motor is at rest.

Loosen setscrew ❹, and move tape guide base ❺to the right and left to adjust the position of the tape.

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-

ing work after turning the power off and ascertaining that the motor is at rest.

Loosen setscrew ❽and adjust the knife cutting position so that moving knife 󱢳enters between knife guide ❾.

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-

ing work after turning the power off and ascertaining that the motor is at rest.

10.ADJUSTMENT PROCEDURE OF FRONT-UP AMOUNT OF THE PRESSER FOOT

– 8 –

2) Loosen screws ❷and ❸.

3) Adjust the sharpness of the knife by turning

eccentric pin ❹counterclockwise according

to the sharpness of the knife.

　　1. The extent of the adjustment of the angle

of mesh is until the marker line on the

eccentric pin is perpendicularly positioned

by turning the pin counterclockwise. If the

eccentric pin is turned beyond the above,

the angle between the upper knife and the

lower knife will increase.

　　2. If the depth of engagement is excessively

increased, the knife can wear.

　　3. Adjust the knife so that it cuts well and the

depth of engagement is not excessive.

After the adjustment, tighten screws ❷and ❸.

14.ADJUSTING THE ANGLE OF MESH OF THE KNIFE

1) Remove cloth plate, left ❶.

❶

❷ ❸

❹

Counterclockwise turn

B: Standard adjustment angle

Angle adjusted for hard-to-sew materials

Angle adjusted when the knife has worn

* If the knife engagement angle is adjusted to

Dfrom the start, the knife can wear earlier

than the case where the angle is adjusted

the standard one.

Horizontal

position

WARNING :

To protect against possible personal injury due to abrupt start of the machine, be sure to start the follow-

ing work after turning the power off and ascertaining that the motor is at rest.

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