Hatsan Lighting maintenance

That link above someone posted is about changing the oil and coolant. Not what op was asking. He asked about changing the filter and desiccant. For me I change out the desiccant with dry dry desiccant beads I purchased separately once a month. As for the filter I change it once every 6 months. It's not hard to change them out. Its common sense. Just unscrew the bolts with 2 wrenches. As for the gold filter, place a screw driver into the hole and twist it. You need to use some force to unscrew the cap off. Then you be able to take out the white cotton filter inside.