Stratasys J850 Manual page 103

6. Unscrew the fittings that connect the waste tubes to the pump.
7. Remove the part of the fitting remaining on the pump tube, and save it.
8. When the tubes on both sides of the pump are disconnected, rotate the
pump "cassette" assembly counter-clockwise and remove it.
9. Install a new pump cassette.
The new cassette contains a new pumping tube.
10. Connect the waste tubes to the new pump cassette.
11. If necessary, replace the pump cassette on the other waste pump.
12. Open the Maintenance Counters screen, scroll down to the General
Pumps section, and click
on page 4-30).
13. Connect the ground wire to the printer panel and attach the panel to the
printer.
for the relevant counter(s) (see the figure