4 - 64ENGCRANKCASEINSTALLING THE OIL PUMP DRIVE GEAR1.Install: Straight key Oil pump drive gear Lock washer Oil pump drive gear nutNew2.Tighten: Oil pump drive gear nut*****************************************************Tightening steps: Temporary install the clutch carrier assembly 1. Hold the clutch carrier assembly with a clutchholding tool 2 and tighten the oil pump drivegear nut 3. Remove the clutch carrier assembly.*****************************************************3.Bend the lock washer tab 4.Clutch holding tool:P/N. YM-91042, 90890-04086T R..50 Nm (5.0 m • kg, 36 ft • lb)