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5-2-2021
APQS.com
General Maintenance
To loosen the needle bar clamp, you’ll need to use a flat blade screwdriver that has a narrow shaft and narrow tip,
like the one shown below. The width of the tip should be no wider than 3/16”- that is the size of the screw that
you will be trying to loosen. The access hole is narrow, so having a screwdriver that does not have a ‘shoulder’ will
enable you to loosen the screw. A long handle will give you more torque on the screw, as it is very tight.
Loosen the needle bar clamping screw by turning it ½ turn to the left (counter clockwise). Reposition the needle bar
so that the top of the needle’s eye looks like the one shown in the photographs below. Be careful not to twist the
needle bar as you adjust it; use the position of the needle bar set screw as guides to make sure the bar is staying
“straight.” Retighten the clamping screw as tight as possible.
Double-check the needle depth one more time, comparing it to the photo on the previous page. Make sure the
needle bar is in its lowest position by rotating the fly wheel back and forth slightly. If the needle depth looks
correct, you will NOT make any further adjustments to the needle bar.
Replace the front cover on the machine. From this point forward, all of the adjustments will be made as the
machine turns the hook assembly – the needle bar depth will not be changed once it is set as shown above.
Needle Depth – Style “L” Hook Assembly
Needle Depth – Style “M” Hook Assembly
“Cabinet tip” screwdriver – tip width 3/16” and total length of at least 10”