Mercury Force 9.9, 15HP Outboards Service Manual, Page 117Get this manual
8Install crankshaft cage Apply Lo tite (Specia Tool NoFT-2962-2) to threads of four screws and secure crankshaft cage to power headTorque to 70 lbin(7.8 Nm)Install new driveshaft spline seal (A) 10Coat drives haft splines with Anti-Seize Lubricant (Special Tool NoFT-2987-1)11 On models with exhaust tubeinstall tube and secure with three screws (8)