ELECTROMAGNETIC CLUTCH FOR ARIENS LAWN MOWERS FOR MODELS: ERZ 1440 , ERZ 1540 , ERZ 1640 , ERZ 1648 , LT 12 G , LT 14 G , SIERRA 1340 , SIERRA 1540 , SIERRA 1548 , SIERRA 1640 , SIERRA 1648 , YT 12 G , YT 12 H , YT 13 G , YT 13 H , YT 15 G , YT 14 H , YT 15 H , YT 16 H , YT 16. 5 H MODEL - TECHNICAL SPECIFICATIONS SHAFT DIAMETER 25.4 mm HEIGHT 76.2 mm PULLEY DIAMETER 136 mm TRAPEZOID BELT WIDTH 12.7 mm CODE: 25270004 ORIGINAL CODE 03601800 , 36018 SR