EMAK OLEO-MAC EMAK OLEO-MAC EMAK OLEO-MAC compatible brushcutter starter pulley Outer (mm): 63 Inner (mm): 15 / 18 for models: EFCO 136, 136 S, 140, 140 S, MT 4000 OLEO-MAC EMAK 936 , 940 , 940C , GS940 Part No.: 40271526 Original part No.: 50050017AR