Navman TRACKFISH 6500 Installation And Operation Manual page 83

c A fuel transducer may be clogged. If so,
remove the transducer from the fuel line
and gently blow through it in the opposite
direction to the fuel flow.
A fuel filter between the fuel transducer
and the fuel tank must be installed as per
the fuel installation guide. Failure to do so
will void the warranty.
d Inspect the fuel cable from end to end for
damage such as cuts, breaks, trapped or
squashed sections.
e Check that the fuel filter is clean.
3-3 A twin engine installation shows only one
flow rate:
a Check that the number of engines is set to 2
(see section 17-5).
B-4 Sonar fishfinding problems
4-1 The TRACKFISH operates erratically:
a Check that the transducer does not have
debris (e.g. weed, plastic bag) caught
around it.
b The transducer may have been damaged
during launching, running aground or
while underway with debris etc. If the
transducer has been impacted, it may have
been kicked up on the bracket. If it is not
physically damaged, reset the transducer
back to its original position. (See the
Transom Transducer Installation Guide.)
c When the transducer is less that 2 ft (0.6 m)
from the bottom, the depth readings may
become inconsistent and erratic.
d Manual Gain may be set too low, which may
cause weak bottom echo or no fish signals. If
in Manual Gain, try increasing the Gain.
e Ensure the back of the bottom surface
of the transducer is slightly lower than
the front and the front is as deep in the
water as possible in order to minimize the
generation of bubbles through cavitation.
(See the Transom Transducers Installation
Guide)
TRACKFISH 6500 Installation and Operation Manual
3-4 Erratic Fuel Flow readings:
a The fuel flow transducer may have been
mounted too close to the fuel pump or may
be subject to excessive vibration. Refer to
the installation instructions supplied with
the fuel transducer.
b Check for leaks in the fuel line or in the fuel
pickup in the tank.
The Flow filter value is not suitable for
c
the engine. Check that the value is not set
to zero, then try increasing the value until a
steady flow rate is shown (see section 17-5).
3-5 There is no reading for fuel economy:
a The boat must be travelling through the
water to generate an Economy reading.
b Check that the paddlewheel on the
transducer is spinning freely and that the
two magnets in the paddlewheel are still in
place.
f Check the transducer and power cable
connectors at the back of the display unit
are securely plugged in and the collars are
locked in place. The collars must be secure
for watertight connection.
g Inspect the power cable from end to end
for damage such as cuts, breaks, squashed
or trapped sections.
h Ensure there is not another fishfinder
or depth sounder turned on, which may
interfere with this TRACKFISH.
i Electrical noise from the boat's engine or
an accessory may be interfering with the
transducer(s) and/or the TRACKFISH. This
may cause the TRACKFISH to automatically
decrease the Gain unless using Manual
Gain.
The TRACKFISH thus eliminates weaker
signals such as fish or even the bottom
from the display. This may be checked
by switching off other instruments,
accessories (e.g. bilge pump) and the
motor until the offending device is
located. To stop problems from electrical
noise, try:
NAVMAN
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