General Information - Volvo Penta MD7A Instruction Book

Important information on the function of your engine:
FUEL
LUBRICATING OIL
RUNNING-IN
ENGINE SPEED

GENERAL INFORMATION

Use diesel fuel oil of quality "Autodiesel". Lower fuel
quality can cause interruptions in operation.
Use only oil with quality CD (DS) according to the
API-System. Volvo Penta oil for diesel engines can
be used with advantage since it meets these quality
demands. See under "Technical Data" concerning
viscosity if any other oil is used.
A new marine engine must be run-in with due care
during the first 20 hours of operation. If full output is
taken out during this time, it should only be done for
short periods.
Oil change. Change the engine oil and oil filter after
the engine has been run for 20 hours. See further
under "Checks and Service".
Max. engine speed: MD7A 43.4 rev/sec (2600 rpm).
In order to select the correct propeller, reference is
made to the Volvo Penta propeller diagram. Check
the engine speed with normal load in the boat. I n
order to obtain maximum engine performance, an
engine speed as high as possible should be chosen
but not, however, greater than 43.4 rev/sec (2600
rpm).
NOTE! When the boat has been in the water for
some time, the speed and max. rev/mm can drop
due to marine growth on the hull. Prevent marine
growth by painting the bottom of the boat with anti-
fouling paint. If the boat is equipped with S -drive
model MD7A/110S – or any other S-drive model – it
is important not to use an anti-fouling paint which
contains copper. See further "Service in connection
with launching".
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