It’s a question we get quite frequently. Why won’t my injector prime? Easy answer – you can only prime the unit with the injection tip removed. Use the Garden Hose adapter to flush out your unit with a higher pressure. This will clean out any debris or crystallization that may have occurred in between uses. Once you have primed your unit, the next step is to attach an ArborSystems chemical pack to the injection unit and then attach an injection tip. So, remember to always prime the unit without an injection tip attached. For more information, instruction guides or how-to-videos, click here.