Stratasys J850 Manual page 106

10. Identify the inlet side of the new filter. This is the side showing the part
number. A 6mm tube is connected to the inlet. (An 8mm tube is
connected to the outlet.)
11. Attach the inlet side of the new filter to the disconnected tube.
12. Disconnect the old filter from the outlet (bottom) tube.
13. Discard the old filter.
14. Attach the disconnected tube to the new filter.
15. Wipe the filters, tubes and surrounding area to remove material leaks and
spills.
16. Replace the back of the materials cabinet.