Volvo Penta AQ205 Operator's Manual page 13

CHECKING AND REPLACING THE
IMPELLER IN THE SEA WATER
PUMP
The pump can be damaged by a shortage of wa-
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ter. Check the pump impeller.
WARNING! Be careful of water penetrating
the boat.
Remove the cover from the water pump. Inspect
the pump impeller. The impeller must be replaced
if it is damaged. Remove the impeller with the
help of two screwdrivers. Be careful not to dam-
age the housing.
ELECTRICAL SYSTEM
WARNING! The engine is equipped with an
alternator. If the alternator and the regulator
are to operate satisfactorily, it is important
that the following instructions be observed.
1. The main switch must not be switched off
until the engine has stopped.
Never disconnect the battery cables or other
cables in the charging circuit when the engine
is running since this can destroy the regulator
and seriously damage the alternator.
2. The battery terminals' polarities must
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never be mixed since this can seriously
damage the electrical equipment.
The battery terminals are marked with a posi-
tive and a negative symbol. The cable from
the negative terminal is connected to the en-
gine block. The cable terminals must be prop-
erly tightened and greased.
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3. The charging circuits must not be
switched while the engine is running.
Fit a Volvo Penta charge distributor (acces-
sory) to the alternator if more than one battery
is fitted.
4. An auxiliary battery shall be used as follows:
The regular battery shall remain connected.
Connect the auxiliary battery to the regular
battery with positive to positive and negative
to negative. Disconnect the auxiliary battery
when the engine has started. Do not discon-
nect the regular battery's circuit under any cir-
cumstances.
5. Do not use a booster charger when the alter-
nator is connected to the battery. Never use a
booster charger to assist during actual start-
ing.
6. Disconnect both battery cables before any
type of work is to be carried out on the electri-
cal system or the alternator.
7. If any welding is to be carried out on the en-
gine or its equipment, the charging regulator's
cables must be disconnected at the alternator
and insulated.
8. Check the belt tension and the cable connec-
tions regularly.
Reset button on fuse
The engine is equipped with an automatic fuse
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which breaks the electrical circuit if it is overload-
ed. The fuse has a reset button (1). Always in-
vestigate the cause of the overload.
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