Pfaff 3704-2/03 - Drive Belt in the Gearbox Housing

12 - 32
Adjustment
3
1
2
4
Fig. 12 - 31
● Adjust eccentric bearing bush 1 (screw 2) in accordance with the requirement and so
that drive belt 4 is in the centre of bobbin opener drive wheel 3.
12.05.30 Drive belt in the gearbox housing
Requirement
Drive belt 4 must be tightened so that the machine runs freely and the belt sprockets
do not have any noticeable play.