Siruba FA007 - Upper Thread Arm Thread Guide Adjustment; Thread Release Shaft Adjustment; Lower Thread Take-Up Timing Adjustment; Installing the Lapper

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!7l Upper Thread Arm Thread Guide Adjustment
Adjust the upper thread arm thread guide so that the upper
thread has a slight tension when the loopers run out of upper
thread loops.
(Adjusting method)
1. Loosen set screw e. and raise or lower upper thread arm
thread guide e as much as necessary.
2.
After the adjustment, retighten set screw e
19] Lower Thread Take-up Timing Adjustment
Make an adjustment so that , when the loopers begin moving
backward, lower thread take-up 8 contact s thread e in the
lower thread take -up lever guide, and is 7 mm up from lower
thread take-up
base e.
(Adjusting method)
1. Insert screwdriver through the adjusting hole in the bed,
and looseo two set screws Q. loosen
2. Raise
lower thread take-up 8 until it is 7 mm up from
thread take -up base e.
3. After the adjustment, retighten two set screws 8 securely.
181 Thread Release Shaft Adj uatment
Adjust the thread releast shaft so that the thread tension discs
loosen when the presser foot is raised and tighten when the
presser foot is lowered.
(Adjusting method)
1. Loosen set screw e.
2. Make an adjustment by turning thread release shaft e so
that the thread tension discs begin to loosen when the pres-
ser foot rises 4 mm above the top of the needle plate.
3. After the adjustment, retighten set screw 8 securely.
[jQJ Installing the Lepper
In sert the tapper guide plate from the front into the oblong
slot in the forward feed
arm cover, making sure that the end
of lapper is clear of the presser foot.
* Lapper adjustment
Adjust felling distance of point ® by loosing set screw e.
Adjust felling distance of point ® by loosing set screw e.
From the library of: Superior Sewing Machine & Supply LLC