Show combines require much skill and attention combines that have become so popular in the last few years require more skill and alert watching than do the old threshing machines according to A L young of the farm mechanics department university of illinois unless the operator Is entirely familiar with the operation of the machine he should get the catalogue and directions and go over them carefully says mr young the number of days of operation Is an important factor in the cost of overhead operation in order to make these as ai many as possible and to prevent the loss of any valuable time in the field it will be nee necessary to check over the entire machine so there will not be any delays and breakdowns in the harvest cutting the grain too low should be guarded against as it will overload the machine and make repairs more necessary mr young warns the operator should watch his machine for loose nuts and for places that show excessive wear the machine should be oiled regularly rather than when there ls Is nothing else to do |