2016 Volume 78 Issue 2 Pages 173-178
A method for making an instruction manual of cleaning the inside of a combine harvester by including the knowledge of practiced workers was developed. In the method, first, experienced workers’ knowledge is gathered by workers’ interviews with watching videos of them performing cleaning tasks. Second, the gathered knowledge is arranged in a chart. Finally, the knowledge is translated into written text with accompanying figures and photographs. To demonstrate the level of cleaning precision on account of the developed method, we made a new cleaning-instruction manual according to this developed method, and examined the residual grain after the combine harvester was cleaned according to the cleaning manual produced. As a result, the quantity of residual grain decreased to 3-5g from 54-60g by workers referring to the newly produced cleaning manual.
