Sequential Trigger Assembly HA0288

This sequential trigger assembly helps control when a pneumatic stapler can fire. In normal use, the safety tip must contact the work first, followed by a pull of the trigger. A cracked, loose, or sticking trigger should be replaced, but the safety tip and trigger valve also need inspection. Match the assembly to the full tool model and serial range. Disconnect the air hose, release stored pressure, and remove all fasteners before service. Install the pins and small parts as shown in the diagram. Test the safety system exactly as directed in the tool manual.