lx188Understanding the John Deere LX188 48 Deck Diagram. The John Deere LX188 riding lawn mower is equipped with a 48-inch deck that ensures efficient and effective grass cutting. To ensure smooth operation and easy maintenance ofJohn 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 (2.640