Tayana -48 Owner's Manual page 101

repair the internal gear and bearing system.
PROBLEM
The thruster does not start at all or works only in
one direction
Check
Check that the voltage of the electric motor is correct for
your installation by their labels.
Solution
If wrong, contact your dealer or distributor to obtain parts
with the correct voltage.
Check
Check the voltage at the thruster between main minus
input and main plus input point.
Solution
The no load voltage should be 12-V system, if bellow
10.4-V your batteries are not in good charge state or
worn out and must be recharged and replaced before
trying to run the thruster.
Check
Check the voltage at the thruster while you are trying to
run it. Keep main engine running to have continuous
charged to the batteries.
Solution
In a 12-V boat the thruster will operate down to approx.
10.5-V, but the performance will be very poor. Find and
correct the reason for the low voltage which may be one
or more of these points. Main batteries cable
connections, battery size and condition, fuse and main
power switch performance.
Check
If the main solenoids on the thruster are not trying to
engage (click) they are probably not getting a "run"
signal from the control system. Try to run the thruster
without the panel by directly connecting the red and blue
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