Pfaff 1571 Instruction Manual page 32

Installation and commissioning
8 - 6
Fig. 8 - 07
Swing the bearing plate 6 of the motor, so that the belt 5 is tightened.
In this position tighten screws 7.
Turn the balance wheel in sewing direction until the needle point descending from above,
is level with the top edge of the needle plate and re-check the value. A tolerance of
± 2 increments is allowed.
Conclude the adjustment of the sewing motor by pressing the TE/Speed key.
7
5
7
4 6