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10. STANDARD ADJUSTMENTS
10-8. Adjusting the lower thread clamp timing
(5)
(3)
(4)
10-9. Adjusting the bobbin presser
A
(1)
10-10. Adjusting the needle up stop position
(6)
(3)
(4)
(2)
76
(2)
A
(1)
2184Q
(2)
(3)
(4)
(5)
2185Q
(1)
(5)
2186Q
HE-8000
Loosen the set screw (2) of the feed arm support (1),
and then align the reference line A on feed guide
shaft B (3) with the edge of the feed arm support (1).
When the feed mechanism moves by approximately
6 - 7 mm, the opening plate (4) will move and the
lower thread retainer (5) will open. Move feed guide
shaft B (3) to the left or right to change the opening
timing.
After the machine head has returned to the home
position, press the RESET key before carrying out
this adjustment.
1. Loosen the set screw (1), and then adjust so that
the bobbin presser (2) goes into the hole in the
bobbin case (3).
2. Check that the work clamp is at the home position,
and then loosen the nut (4) and turn the screw (5)
to adjust the clearance A between the bobbin
presser (2) and the edge of the bed to approxi-
mately 12.5 mm.
The needle up stop position is adjusted so that the
index mark (2) on the machine pulley (1) is inside the
mark (4) on the belt cover (3).
If adjustment is necessary, loosen the screw (5) of
the machine pulley (1) and adjust the position of the
machine pulley (1). The machine pulley (1) stops
later if it is turned clockwise, and it stops later if it is
turned counter clockwise.
The screw (6) is a screw for detecting the machine
stop position, and should not be loosened.
NOTE:
If the index mark (2) is not inside the mark (4)
when the sewing machine is started, error code
"E-02" will be displayed. Turn the machine pulley
to move the index mark (2) to the correct position
and then start the sewing machine.
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