Duerkopp Adler 7700 Instruction Manual download pdf (Page 17)

5. BASIC SERVICE INSTRUCTIONS

5.1 ADJUSTING THE KNIVES AND OVEREDGE WIDTH

Height of the lower knife

Loosen setscrew 2 and adjust the height of lower

knife 1 so that its edge is flush with the throat

plate surface.

Height of the upper knife

Loosen setscrew 4 and perform adjustment so

that upper knife 3 overlaps lower knife 1 by 0.5 to

1 mm when upper knife 3 is at its lowest position.

Overedge width

Overedge widths of 1.6 through 6.4 mm are

provided by changing the parts or by using

subclass models. (The overedge width will be

slightly larger than the knife cut width.)

To change the overedge width :

Loosening setscrew 5 , push lower knife 1 to the

left and fix it.

Loosen setscrew 6 and move upper knife 3 as

required, then fix it.

Lower the upper knife to its lowest point and

loosen setscrew 5 . Tighten setscrew 5 when the

lower knife comes in xontact with the upper knife.

(Caution)

Be sure to tighten setscrew 5 before operating

machine.

After the completion of adjustment, make the

knives cut a thread to make sure of sharpness of

the knives.

Resharpening the lower knife

When the lower knife has become dull ,

resharpen it as shown in the figure left.

Caution: Danger of injury!

To protect against possible person injury due to abrupt start of the machine, be sure to start the

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

5.2 CLEANING THE MACHINE HEAD

Caution: Danger of injury!

To protect against possible person injury due to abrupt start of the machine, be sure to start the

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

Clear lint from inside the looper cover and the needle bar and components about one or twice a day. If not,

oil may leak or the sewing material will be soiled.

(caution) Do not wipe the coated surface of the machine head with lacquer thinner. Doing so will damage

the coated surface.

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 23 24

Comments to this Manuals

No comments

Duerkopp Adler 7700 Instruction Manual Page 17

Comments to this Manuals

Related products and manuals for Sewing machines Duerkopp Adler 7700