64
Fuses
These engines have two semi-automatic fuses of ap-
prox. 8A. These fuses break the current in the event
of overloading.*
In the TAMD71 and TAMD72WJ, the fuses are locat-
ed in the front of the junction box on the left end of
the expansion tank. In the junction box in these en-
gines is also a safety fuse for the stop solenoid (16A
at 12V, or 8A at 24V system voltage) or a fuse (8A)
for the fuel shut-off valve.
The TAMD63 and TAMD72P have the junction box
on the exhaust manifold at the rear left of the engine.
The fuses are at the back of the box.
The electrical starter element** is also protected by a
strip fuse (150A) between the element and the high
power relay.
See instructions on page 66 for resetting/replacing
fuses.
Make sure that you always have spare fuses on
board.
* TAMD72P: If a fuse is triggered or blows the engine will
stop.
** The TAMD63 and TAMD72 have no starter element.
The main switches should break the current to all
parts consuming electricity. Electrical cables should
be routed so they are not exposed to moisture and
there is no risk of them being exposed to bilgewater
in the keelson.
If there are several battery circuits, there must be
separate switches for the extra equipment. There
must also be a main switch between the extra bat-
tery’s positive (+) pole and the fuse block for the
boat’s electrical equipment. The main switch for the
extra battery circuit should break the current to all
power consuming equipment connected to this circuit
and be switched off when there is no requirement for
extra current. The main switches to the engine must
be switched off when the boat is not in use.
The propulsion package must not be electrically con-
nected to other equipment such as the trim tabs,
steps, etc. Nor should it be used as ground for radio
or navigational equipment or other electrical equip-
ment where there are separate ground cables. All
separate ground connections should be collected to-
gether to form a joint ground connection which is
separate from the propulsion package.
If shore power is connected, protector ground should
not be connected to the engine or to any other
ground on the boat.
A transformer connected to shore power must be in-
stalled so that protector grounds on the inlet side
(120/220V) and the minus connection on the outlet
side (12/24V) are not cross-connected.
WARNING! Electrolytic corrosion as a conse-
quence of leakage currents may cause serious
and expensive damage to your boat’s equip-
ment within a short time. Work on the boat’s
low tension circuit should only be carried out by
qualified or experienced persons. Installation or
work on the shore power equipment must only
be carried out by electricians authorized to
work with high-voltage installations.
Electrical system – Important!
Turn the engine off and turn off the power at
the main switches before carrying out work
on the electrical system.
1. Main switches
Never break the circuit between the generator
and batteries while the engine is running. In other
words, the main switches must never be discon-
nected before the engine has stopped. If the cir-
cuit is broken while the engine is running, the
voltage regulator may be destroyed and the gen-
erator seriously damaged.
Charging circuits must not be switched over
while the engine is running, for the same reason.
Relays
The relays are located in the junction box. This is lo-
cated at the rear of the exhaust manifold on the left
side of the engine (TAMD63 and TAMD72P) and on
the left end of the expansion tank (TAMD71 and
TAMD72WJ).
The start and stop* functions are controlled via two
change-over relays. These relays are identical and
are therefore interchangeable if necessary.
On engines with starter elements** there is also a
timer relay in the junction box which controls the
starter element’s rating (approx. 50 sec.) via a high
power relay. This high power relay is located in front
of the air filter adjacent to the starter element.
* Not TAMD63 engines.
** TAMD63 and TAMD72 have no starter element.
General Information
Electrolytic corrosion
Your boat and its engine/reverse gear have sacrificial
anodes made of zinc as protection against galvanic
corrosion. This protection may be rendered ineffec-
tive if there are any leakage currents from the electri-
cal system due to faulty equipment or incorrectly
connecting electrical components on the negative
side (grounding, protector ground). The following
should always be borne in mind:
The engine’s main switches should be mounted on
both the positive (+) and the negative (–) battery
leads.
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