Volvo Penta MD7A Instruction Book page 11

RUNNING INSTRUCTIONS
Folding propeller, S-drive. When switching from engine
operated running to sailing the propeller rotation is stopped by
engaging reverse gear. When sailing maintain the control
lever in the reverse position.
Fixed propeller. When sailing the control lever should be in
the neutral or reverse position. During long sailing trps with
the lever in the neutral position, the engine should be run for
some time every tenth hour in order to ensure lubrication in
the drive or reverse gear.
Switch off the main switch. NOTE! The main switch must
never be switched off until the engine has stopped completely
(the charging regulator can be damaged).
Close the fuel and cooling water cocks if the boat is not going
to be used for some time.
Check for leakage before leaving the beat.
In cold weather and whenever there is a risk of temperatures
below zero, the cooling water must be drained from the engine
and the reverse gear. Close the cock on the cooling water
intake, (S-drive model 110S: See page 19). Close all the
drainage cocks if the boat is left without regular supervision.
An incorrectly performed draining can result in a sunken boat.
(See positions 15 and 16, page 34).
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