Presser Foot and Presser Foot Finger

5) The center hinged type Presser Foot is generally used since it is convenient for seaming or edging where seams or thick and thin places must be crossed. Rigid and rear hinged type Presser Feet are available for special purposes. After lifting the Presser Foot Latch, the Presser Foot Arm with its Presser Foot may be swung out to provide access to the Needle and Loopers.
6) A “stub” or short Presser Foot Finger is used if the machine is equipped with a Needle Plate with a chaining finger. A long P.F. Finger is used with a Needle Plate with a stub or short chaining finger. The finger guards the right side of the Needle. This should be adjusted sideways so that the left hand edge of the finger (next to the Needle) just clears the Needle when the Needle is in the full down position.
7) Ordinarily, use as little pressure on the Presser Foot as possible. This pressure is adjustable by the Screw 6 3/8. A set Screw 13 5/32 holds Screw 6 3/8 in position so your adjustment does not change while the machine is running.