Service manual

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Revised 03/2006
S-311
1-35
2. THE SEWING DRIVE SENSOR PLATES ADJUSTMENT
It is important that the sensor plates of the sewing drive are properly adjusted. To access these plates,
remove the right side cover according to the section B4.The sensors are adjusted from the manufac-
turing factory and are marked with the colour.
BQ8 - The sensor for needle bar position when the machine is stopped.
BQ1 - The sensor for table feeding when sewing.
2.1. Rotate the hand wheel ➐ until the marking is on the top.
2.2. Then rotate the hand wheel again for approximately 90° (picture 2), the needle bar lifts for
2mm in front of the top position. At this moment, rotate the plate Ì of the sensor Ë the way
until the sensor is activated (diode on the sensor shines), tighten the screw Î.
2.3. Adjust approximately the plate ➍ after loosing the screws ➏ the way, so its screw was in the
plate tooth ➌ level. Rotate the hand wheel and adjust the needle bar into the bottom position.
Adjust the plate ➍ position so the sensor ➊ is activated. Tighten the screws ➎, ➏ and put
coating on it.
E - STANDARD MACHINE ADJUSTMENT
0°
~90°
0°







Picture 1
Picture 2


