Hitachi UX Twin Nozzle Service Manual page 172

5 Clean the portion stained with ink and then install the new pump head in reverse
order of the procedures above.
[Caution] Make sure to use new O-rings. (2 pieces)
Be careful not to cause the O-ring to fall off or pinched.
Refer to the figures below for identifications.
4 positions
Recovery pump head
Reset the pump time to "0" on the "Parts usage time management" screen.
6
4-38