Suzuki DF25/DF30 Four Stroke Service Manual, Page 195Get this manual
8-16 MID UNIT OIL PAN TO DRIVESHAFT HOUSING Install water tube grommet 1, water tube 2 Install water pressure valve 3, and pressure valve cover 4, then securely tighten the two (2) valve cover bolts 5
Install the gasket and exhaust tube 7, then securely tighten the bolts 8(Transom type only)