Replacement Needle set for Ultra Cordless Paint Sprayers.
Part no. 17P174 Graco CleanShot Outlet Check Valve Kit Handhelds. Fits Graco 17M359, -17M363 -17M366 Ultra Handheld corded and cordless airless sprayers.. Please check your manual for the correct application
Includes Needle set and Seal with full instructions.
You can check if this is the problem by looking at the Ball on the front of the Needle. It should be round and smooth. If it has a round groove cut into it then it definitely needs to be replaced.
A Genuine Graco part at a great price.
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