Checking And Adjusting Aid - Pfaff 487 Adjustment Manual

1.

Checking and adjusting aid

05
Fig. 1 - 01
● Turn the balance wheel until the needle bar is roughly in the required position.
● Insert the blocking pin in the required hole and press against it.
● Turn the balance wheel slightly back and forth so that the pin enters the cutout in the
bearing plate behind and thus blocks the machine.
Hole 1
Hole 3
Hole 4
Hole 5
Hole 6
By blocking holes 1 to 6 with a pin it is possible to accurately fi x the required
needle bar positions.
= 0.6 mm past top dead centre of the needle bar (0.6 past t.d.c.)
= 0.6 mm past bottom dead centre of the needle bar (0.6 past b.d.c.)
= 1.8 mm past bottom dead centre of the needle bar (needle rise position)
= top dead centre of the needle bar (t.d.c.)
= 4 mm past bottom dead centre of the needle bar (4 past b.d.c.)
Adjustment
5