13 Maintenance 13.13 Threshing mechanism 67089 Open cover (1). Clean the threshing concave, threshing drum and preparation floor. WARNING: 1 Unbalance of the threshing drum. Machine damage. Uniformly clean the rasp bars and cover plates from the inside. 19609 138 Uniformly clean the rasp bars and cover plates from the inside. Close flap (1). 00 0293 210 2 - BA DOMINATOR 150/140/130 - 12/09 357