Setting The Loop Stroke - Duerkopp Adler 670 Service Instructions Manual

Position of the hook and needle
To set the hook height:
1. Measure the existing hook height.
2. Disassemble the hook (1).
3. Loosen the screw (2).
4. Pull the oil thrower washer (5) up and off.
5. Shim the corresponding number of adjusting washers (4).
6. Place the oil thrower washer (5).
7. Tighten the screw (2).
8. Assemble the hook (1).

10.2 Setting the loop stroke

Abb. 35: Set the loop stroke
(1) - Needle
(2) - Hook tip
Proper setting
The loop stroke is 2 mm.
To set the loop stroke:
1. Lock the machine in place at position 1 ( p. 20).
2. Set the upper stitch length adjusting wheel to 0.
3. Tilt the machine head ( p. 16).
4. Loosen the screws on the clamping ring (3).
5. Turn the hook so that the hook tip (2) is at the center of the needle (1).
6. Tighten the screws on the clamping ring (3).
Service Instructions 670/680 - 00.0 - 07/2017
① ②
(3) - Clamping ring
③
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