Singer XL-400 Manuel D'instructions page 62

THREADING THE TOP THREAD
Refer to page 16 - 19.
NOTE: It is recommended to thread the upper thread before
transmitting a design to the machine for embroidery.
EXTENSION TABLE
1. Turn off power to machine.
2. Slide the extension table to left to remove it from machine.
(Refer to page 98 - 99.)
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