1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 242Get this manual
8-13 POWER TRIM AND TILT PTT Motor Installation Installation is reverse of removal with special attention to following steps
Ensure that the drive joint is aligned and firmly inserted into the gear pump assembly Fit O-ring to pumpreservoir Check the level of PTT fluid contained in the pumpreservoirIf level is low, add recommended PTT fluid until level with mating surface of PTT motor