Adjustment
11 - 3
11.05 Adjusting the basic machine
11.05.01 Basic position of the machine drive (for 220 V built-in motors only)
Requirement
When the needle bar position is 0.6 mm above the BDC, the marks on the machine
housing 1 and toothed belt wheel 4 must be flush with each other.
Fig. 11 - 02
● Using the adjustment gauge, position the needle bar 0.6 mm above BDC.
● Disassemble motor 1 (screws 2).
● Remove toothed belt 3 from toothed belt wheel 4.
● Turn toothed belt wheel 4 according to the requirement and slide the toothed belt on to
the wheel.
● Screw on motor 1, making sure that the motor clutch can only be placed on the toothed
belt wheel in one particular position. (The segments have varying sizes).
1
4
3
1
2
2
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