How to adjust the 40% discount of mask machine?

The steps of 40% discount on mask machine are as follows:

1. Find the discount device of the mask machine, which is usually located at the lower part or side of the mask machine and fixed on the mask machine with screws.

2. Adjust the position of the puck by rotating the adjusting wheel, so that the puck is located at a proper position away from the mask.

3. After adjusting the position of the disc, test it to see if the mask is folded into four layers. Otherwise, adjust the position of the disc properly until it is folded into four layers.