Graco 390 PC Airless Paint Sprayer Stand Model:Stand use a 10 mill allen

use a 10 mill allen wrench

A worn inlet will give you similar symptoms as a worn packing

Kit A includes the water hose wash-out adapter with the suction set

0294905 Packing Kit

Graco 390 PC Airless Paint Sprayer Stand Model:Stand use a 10 mill allen17c310 Brand New Unit 3 Yr Graco Factory Warranty Lifetime Motor Warranty What we really like about the 390, is that though it's a step down from the Titan 440 it's still a good, powerful sprayer. It's also easy to maintain and is designed for weekly use, but just below the more expensive Titan 440 price. (Especailly if you are looking for a Hi Boy model on wheels) Graco has been in the paint sprayer business for a long time, have a loyal customer