Upper Thread Take-Up Thread Guide Adjustment; Upper Thread Arm Thread Guide Adjustment; Thread Release Shaft Adjustment; Lower Thread Take-Up Timing Adjustment - Brother DA-9270 Instruction Manual

9. STANDARD ADJUSTMENTS

9-6. Upper thread take-up thread guide adjustment

q

9-7. Upper thread arm thread guide adjustment

w

9-8. Thread release shaft adjustment

w

9-9. Lower thread take-up timing adjustment

Adjusting hole
w
e
q
r
19
w
2 - 3mm
q
q
7mm
DA-9270
Adjust the distance between the center of the upper thread
take-up and the top of the thread guide will be 2 ~ 3 mm.
1. Turn the pulley toward yourself until the needle bar is
down at the lowest position.
q
2. Loosen the screw , and then move the upper thread
take-up thread guide
the distance from the top of the upper thread take-up
w
thread guide to the center of the upper thread take-
up hole is 2 - 3 mm.
* The higher the upper thread take-up thread guide
the greater will be the upper thread loops.
q
3. Tighten the screw .
Adjust the upper thread arm thread guide so that the up-
per thread has a slight tension when the loopers run out
of upper thread loops.
q
1. Loosen the screw , and then adjust so that the upper
thread arm thread guide
2. After the adjustment, retighten the screw
Adjust the thread release shaft so that the thread tension
discs loosen when the presser foot is raised and tighten
when the presser foot is lowered.
q
1. Loosen set screw .
2. Make an adjustment by turning thread release shaft
so that the thread tension discs begin to loosen when
the presser foot rises 4 mm above the top of the needle
plate.
3. After the adjustment, retighten set screw
Make an adjustment so that, when the loopers begin mov-
ing backward, lower thread take-up
and is 7 mm up from lower thread take-up base
1. Insert screwdriver through the adjusting hole in the
lower thread take-up base, and loosen two set screws
r
.
2. Raise lower thread take-up
e
thread take-up base
3. After the adjustment, retighten two set screws
curely.
w
up or down to adjust so that
w
is nearly horizontal.
q
.
q
securely.
q
contacts thread
e
q
until it is 7 mm up from
.
w
,
w
w
,
.
r
se-