Lacquer is one of the materials that Graco's Magnum paint sprayers are not able to spray right out of the box. To help compensate for this dilemma, Graco created the Magnum Lacquer Conversion Kits, which change out the o-rings and inlet tube to make spraying lacquer a breeze.
Because solvent and water based lacquers are much different than regular household paint, it is recommended that you use an entirely different hose and gun when spraying different types of paint; one set for solvent lacquer another for everything else.
If you are unable to obtain a copy of the manual for you specific model, here are the basic instructions for installing the kit:
Please keep in mind that the above instructions are for general use only. Installing conversion kits are at the users risk. Portland Compressor is not held liable for any damage to the sprayer, kit, or other items that may occur, and is not held liable for any injuries that may arise.