Adjusting The Material Support Arm; Interval Gear (Figure 12); Setting The Interval Gear (Figure 12) - Global BM 345 Mechanic's Instructions

2.12.3

Adjusting the material support arm

1. Turn the main shaft until the needle tip stands 1–2 mm behind the centre of
the presser.
2. Adjust the control knob (4) figure 12 so that the needle is lifted by 0.2 mm,
then screw in the threaded pin (5) figure 12 until it lies against the case.
Next, counter the threaded pin (6) figure 12.
The material support arm must be adjusted to have no axial backlash.
2.13

Interval gear (figure 12)

Every second rotation, interval gear 1:2 lowers the material support arm
(presser) by the value given by the interval stroke control.
2.13.1

Setting the interval gear (figure 12)

1. Set the stitch depth until the desired stitching results are achieved.
Turn the regulating button for intervals (3) figure 12 clockwise until the
2.
desired interval stroke is achieved.
CAUTION!
Switch off the machine electrically!
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