Stylus Pro 4880 Field Repair Guide 1/17/08
Pump and Cap Removal Printer Component, Software Item, LCD Display, Printer Button  Page 96.
4. Flex the Trigger Shaft until the end farthest from the Side Frame clears it’s Socket, then remove 
the Shaft.
5. Remove 4 Screws securing the Cap and Pump Assembly.
Flex the Shaft from 
behind
Free the end of the 
Shaft from it’s 
Socket
Slide out the Trigger 
Shaft
2 Screws
2 Screws