Reinstall Filter and Lubricate Threads

What happens here

After the filter and cap are clean, reinsert the filter element into the housing. Apply a layer of packing lubricant around the threads of the filter housing. This lubricant helps prevent paint from drying and adhering to the threads, which would 'glue' the housing in place and make future removal difficult. Then, screw the filter housing back onto the Graco sprayer by hand. Ensure it is snug but do not use a wrench to overtighten it; it only needs to be hand-tight to prevent leaks.

Goal: Secure the clean filter and ensure easy future maintenance