Singer 591 - To Remove and Replace the Needle Bar

TO REMOVE AND REPLACE THE NEEDLE BAR (See Fig. 20)
(On Drop Feed Machines)
Q2 M2
Remove the needle bar in the following manner:
1. Remove needle, needle set screw and needle bar thread
guard.
2. Remove face plate.
3. Loosen clamping screw C.
4. Loosen screw M2 sufficiently to allow needle bar to pass,
then slip needle bar up through both needle bar bushings
and out of machine.
NOTE: If it becomes necessary to remove upper needle
bar bushing N2, first remove screw M2 and take-up lever oil
guard P2. Then loosen set screw Q2 and drive bushing N2
down and out of head of machine. Use a 10mm driving pin.
Before replacing needle bar, replace upper needle bar
bulling N2, by driving it downinto hole provided for it in
head of the machine. Make certain top of bushing N2 is level
with top of arm. Tightenset screw Q2.
Fig. 20
Replacethe needlebar in the following manner:
1. Slip needle bar down through both bushings in head ofthe machine. Tighten screw C.
2. Replace needle bar threadguard, needle set screw and needle.
3. Set needlebar at correct height asinstructed on page2.
4. Replace oil guard P2and fasten it securely to bushing withset screw M2.
5. Replace face plate.
TO REMOVE AND REPLACE THE PRESSER BAR
To remove the presser bar:
1. Remove presser foot, face plate and presser bar pressure regulating thumb screw R2, with presser bar guide from
head of the machine.
2. Loosen clamping screw J about oneturn (just enough to make it loose).
3. Slide presser bar up through lifting lever link H, Fig. 20, and bushing and outof machine.
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From the library of: Superior Sewing Machine & Supply LLC