1999 Volvo Penta "WT" Models Workshop Manual, Page 30Get this manual
Submerged Engine Remove engine from water as quickly as possibleIt is imperative that your dealer remove all water from the engine and immediately relubricate all internal partsAll electrical devices must also be dried and inspected for water damageDelay in completing these actions may allow extensive engine damageFrequently check engine compartment for gasoline fumes and excessive water accumulation; water depth in bilge should be kept well below flywheel housing
20-HourCheck
1Change engine oil and oil filter2Check power trim-tilt reservoir for proper fluid level
33.0 GS Models Only: Clean and inspect the ceramic filter
located under the fuel pump4All Models Except 3.0 GS: Change fuel filterwater separator