1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 274Get this manual
9-21 LOWER UNIT LOWER UNIT INSTALLATION Insert dowel pins 1Coat the driveshaft splines with Water Resistant GreaseApply light coat of Suzuki Silicone Seal to mating surfaces of gearcase and driveshaft housing
Slide the lower unit into place, making sure that the top of the driveshaft engages properly with the crankshaft and that water tube locates in the water pump case outletApply Suzuki Silicone Seal to the retaining bolts and tighten them to specified torque99000-25161Water Resistant Grease 99000-31120Suzuki Silicone Seal Gearcase bolt23 (2.3 kg-m, 16.5 lbft