lx188John Deere LX188 Engine Repair Specifications Cylinder Block Cylinder compression ..... 12.0 kgcm2 (170 psi) Cylinder Bore Standard I.D ..... 66.98-67.00 mm (2.637-2.638 in.) Cylinder Bore Maximum I.D ..... 67.06 mm (2.640The John Deere LX188 drive belt diagram consists of several parts, including the drive pulleys, idler pulleys, and tensioner pulley. These pulleys work in conjunction with the drive belt to transmit power from the engine’s crankshaft