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1. Frst losen the clamp screws and remove the upper framework. Remove the damaged fine meshand replace it with a new fine mesh.

2. Lay the fine mesh on the coarse mesh,and put the upper framework back to the original position,then tighten the fine mesh by hand around the edges. At the frame edges of the upper and lowerframeworks at opposite ends of the machine body, use a universal tongs respectively to tighten bothsh.the upper framework and the lower framework.

3. Put the clamp again and loosen the universal tongs, then tighten the clamp screws.

4. Use a leather hammer to strike clamp around evenly, then lock the copper nuts, thus the work ofchanging fine mesh is finished.

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