7. ENGINE REMOVAL/INSTALLATION MXU550EXi/MXU500i Install the compression spring into the pinion gear. Apply lightweight lithium-soap base grease to the pinion gear splines. Move the engine rearward and engage the rear propeller shaft into the pinion gear. Install the joint boot securely. Install the upper engine mounting bolt and nut loosely. Lower Engine Mounting Bolt/Nut Install the rear lower engine mounting bolt and nut loosely. Install the engine hangers and four engine hanger nuts loosely. Install the front lower engine mounting bolt and nut loosely. Tighten the four engine hanger nuts to the specified torque. Engine Hanger Nuts Engine Hanger Torque: 3.5 kgf-m (35 N-m, 25 lbf-ft) Tighten the all engine mounting bolts and nuts to the specified torque. Torque: 6 kgf-m (60 N-m, 43.5 lbf-ft) 7-9