Shrinkfast 998 Heat Gun Filter Disc - Part# 3
The Shrinkfast 998 Heat Gun Filter Disc (Part# 3 on the diagram) rests inside of the Inlet (part #8) and is responsible for catching any unwanted particles in the fuel system. The Filter Disc must be cleaned regularly to prevent buildup which can cause an irregular flame by limiting fuel flow. It can easily be cleaned with compressed air once removed.