If a mechanism isn't sitting where it should, or isn't returning where it should, or isn't holding pressure where it should — a spring is probably the reason. They're the invisible force keeping half the machine's assemblies in their intended position, and when they lose their strength, everything they were tensioning goes soft.
This is the genuine Nilfisk Advance OEM CLIP-SPRING ADJUSTMENT-LEFT, part number 56116661, brand new in the box. Factory-spec tension is what the whole mechanism was designed around; a spring that's slightly off changes how the assembly feels and performs.
Not sure this is the right spring for your machine? Send us the model and serial and we'll match it up.
