COMPONENT CLUTCHES BERTOLINI compatible spare parts - Motocultivators 318 1. SINGLE CLUTCH WITH DIAPHRAGM SPRINGS Flat diam. 160 mm Original part no.: 81.9109.20 Code (ERC): 15013 2. RIGID CLUTCH DISC 155 x 110 x 4 17 x 15 ASA 32/64 20 slots Code (ERC): 15198 3.