Volvo Penta MD7A Instruction Book page 32

LAYING-UP AND LAUNCHING
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Launch the boat. Start the engine. See the instructions on page
5. Run the engine warm with the gear engaged. Check to make
sure there is no leakage of fuel, air, water or exhaust gases.
Check that all functions for maneuvering are working properly.
When necessary contact an authorized Volvo Penta Workshop
and have their specialist make the service on engine and
reverse gear or S-Drive in accordance with recommendations in
the servicing scheme.