Suzuki DF 25 Service Manual page 195

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 L type only)
Install two dowel pins 9 to driveshaft housing 0.
Apply sealant to mating surfaces of driveshaft housing and oil
pan.
99000-31120 : Suzuki Silicone Seal
Install oil pan A to driveshaft housing 0, then tighten six (6)
bolts B securely.