Volvo Penta MD7A Instruction Book page 30

LAYING-UP AND LAUNCHING
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Since the rust-protection-mixture does not give protection
against freezing, it has to be drained off from the engine and
the reverse gear (paragraphs 15 and 16, page 34). There is no
need to drain off the Ethylene Glycol-mixture. Remove the
cover from the cooling water pump. Check the impeller for
possible damage. NOTE! Do not pull out the impeller if it is
undamaged. Install the cover using a new, genuine gasket.
Install the cooling water hose between the cooling water intake
and reverse gear and the water pump (MD7A/110S)
respectively.
Close all draining cocks. If a vacuum -valve is installed, it has to
be disassembled and salt-sediments cleaned away.
Clean the outside of the engine and reverse gear. Touch-in any
bare patches on the paintwork with the original type of paint .
Spray the components of the electrical system and all control
components with anti-moisture spray.
Remove the battery. For proper maintenance it needs to be
charged to prevent it from being damaged.
Check the flexible rubber seal between the S -Drive and the
engine foundation for elasticity and that it is free from mecha-
nical damage.
The flexible rubber seal must replaced each 5th year. Check
further that the rubber seal underneath on the boat and around
the S-Drive is properly located.
Following concerns the folding propeller:
Remove the propeller from the S-Drive.
Clean the propeller in fresh water, remove the screws from the
suspension dowel pins holding the propeller blades and remove
the dowel pins and the propeller blades. Clean all surfaces and
then grease all the parts with proper grease. Use the Volvo
Penta Special Grease. Especially the bearing surfaces on
dowels and blades need careful greasing. Protect the hub of the
propeller.