Has tackling laid crops blunted the knife on your header? Here we run through some tips for maintaining two of the most common cutting set-ups — the forged system and the Schumacher knife

A clean grain sample is primarily the result of two variables — work rate and a consistent flow of material into the threshing system. The first link in this process is the cutting system on the combine header. Heavy wear and damage in this department will force the operator to reduce the forward speed, and at worst it can down the thresher.