Briefly Checking The Adjustment Of The Thread Trimmer Of Ddl-8700-7 Series - JUKI ddl-8700-7 Engineer's Manual

7. BRIEFLY CHECKING THE ADJUSTMENT OF THE THREAD TRIMMER OF
DDL-8700-7 SERIES
Confirm checkpoints ❶ through ❻ following the procedure described below. It is basically required to
adjust the points properly.
Start
Turn ON the power to the sewing machine, and the
machine stops with the marker dot engraved on the
machine arm aligned with the marker dot (white) on the
pulley.
Turn OFF the power to the machine with the marker dot
aligned with the marker dot (white). Now, confirm
❶ ❺
checkpoints through
Marker dot
White
Cheakpoint ❶
Roller arm
Cheakpoint ❷
Roller arm
0.3 ± 0.2mm
− 62 −
.
Normal direction
of rotation
Press the roller arm in
the direction of the
arrow to confirm that
the roller arm smoothly
projects and retracts.
Turn ON the thread
trimming solenoid
by hand and confirm
❷
checkpoints
❺
through .
Confirm that a clearance
of 0.3 ± 0.2 mm
(equivalent to
thickness of one or
two sheets of paper)
is provided.