JUKI DDL-8000A Engineer's Manual

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Adjustment Procedure Results of Improper Adjustment
After everything has been installed for the upper shaft, remove rattles
from bearings (pressurizing).
1. Assemble all parts for the upper shaft.
2. Loosen two setscrews ❶ of the upper sprocket.
3. Enterthetipofataperedminusscrewdriverintothecoupling❷
slot until it stops. (Part A)
*Ifthescrewdrivertipisnotinsertedfullyintheslot,theange
part of the upper sprocket is deformed or destroyed.
4. Lightly turn the screwdriver to move the coupling ❷ toward B in
the direction of the arrow.
* The torque to turn the screwdriver is 7kgf•cm. (Light turning is
sufcient.)Ifitisturnedtoostrong,theangepartoftheupper
sprocket is deformed or destroyed.
5. Tighten the setscrew ❶ of the upper sprocket.
6. Turntheuppershaftby90degressInregardtothesecond
screw, follow the same procedures as 3. to 5. above.

JUKI DDL-8000A Specifications

General

Stitch Type	Lockstitch
Motor Type	Direct-drive motor
Thread Trimmer	Automatic
Max. Stitch Length	5mm
Needle Bar Stroke	30.7mm
Lift of the Presser Foot	By hand: 5.5mm, By knee: 13mm
Control Panel	Digital
Lubrication	Automatic