4-38 
 
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. 
 
 
 
 
 
 
 
 
 
 
6 Reset the pump time to "0" on the “Parts usage time management” screen.