The Graco 288488 gun repair kit is used to replace the needle and internal packings of the New Contractor airless spray guns (released in 2007). This kit is typically needed when the gun starts to spit or is leaking from the handle.
Procedure to use the 288488 gun repair kit:
For use with these models of Graco airless spray guns:
Part #: 120777
Part #: RAX517
Part #: 288420
Part #: 248212
Part #: 287031
Part #: 288430
Part #: 288421
Part #: 287032
Part #: 287033