Cutter for inspection. Check that the blade is mainly intact, harvester blade fixed solid, fixed blade and blade center line is coincidence, blades, knife holder clearance is correct. Combine two blades divided into light-edged and jagged edge blade, knife for jagged edge, knife edges. Combine harvester blade repair content include: ? check if the combine harvester blade grinding blunt or damaged. In order to reduce cutting resistance should be timely replacement of grinding blunt or damaged blade. Fixed Blade wear to 0. 15 mm, high gear is less than 0. 5 mm and missing teeth are more than 3 consecutive time, replacement blades, sawtooth-type movable blades generally replace repairs. Light blade grinding blades blunt and cutting edge more than 0. Available after 3 mm grinding, and blade width is less than the width cutter guard should be scrapped, when attention riveted, rivet head must be correct and secure. Fixed blades on the top surface should always be in the same plane. ? check if the tool bar bending deformation and fracture. Bending tool bar, can be placed on care tap with a hammer until the tool bar until the straight, fracture repair tool bar can be welded, welding tool bar welded joints should be file. ? check blades, blade clearance. This gap should be 0. 3-1 mm, front end is less than 0. 5 mm, the backend does not greater than 1. 5 mm. This gap can be adjusted by correcting cutter guard installation location. ? examine the knife holder. Knife holder incompressible too died, there should be 0. 1~0. 5 mm gap, to promoting tool bar easily by hand as a standard, its clearance adjustment Bishop hit knife holder available to achieve. ? If a knife is left and right limit position, fixed blade and blade center should be coincidence, the error should not be greater than 5 mm, hollow Prize available when adjusting horizontal pry cutter guard or adjust the connecting rod length to solve.