Pfaff 441-O - Most Favourable Knee Lever Position

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Correct
setting:
17.0.2
Most favourable knee lever position
When in its rest position, knee iever connecting rod 4 shouid be at abt. 15° to the ieft
of an imaginary line extending at right angles to the front edge of the bedplate.
17.0.1
17.1 Lower the presser foot ontothe needleplatebymeansofthe presserbar lifter.
17.2 Loosenbothclampscrews1 just sufficiently to permit the vertical knee ievershaft2to be
tumed in crank 3 against resistance.
17.3 Adjustthe kneeleverso that kneeleverconnectingrod4,whenat rest, Ispositioned
at abt. 15° to the left of an imaginary line extending at right angles to the front edge
of the bedplate.
17.4 In this position, securely tighten clamp screws1 incrank3, making surethatthe vertical
knee lever shaft 2 has no vertical play.
17.5 Check this adjustment (see "Correct setting") and pull thekneeieveroutofits joint.
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From the library of: Superior Sewing Machine & Supply LLC