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28
• If the tune was good, both the [Up Arrow] LED and the [Down Arrow] LED will turn on
solid for 5 seconds
• If boat goes into circles, verify steering direction in step 4, page 28. (hoses could be
reversed)
• If the tune failed, both the [Up Arrow] LED and the [Down Arrow] LED will blink for 5
seconds.
• If tuning conditions are real bad, the unit will simply go directly back to standby or shut
down with no arrow LED indications at all.
• If the quality of the tune is suspect, the [Down Arrow] LED (only) will blink for 5
seconds; this may not be a bad tune - so try it in autopilot mode rst before tuning again.
When autotune is done, check out the steering performance at low and high speeds. If low
speed performance isn’t too good, try autotuning again. If, after several attempts at autotuning,
the performance isn’t good you will need to resort to the ne tuning procedure in step 15.
Step 1. The autopilot
must be in standby.
[STBY] LED is
illuminated.
Step 5. Bring the
engine(s) up to
speed (lower RPM
not planing) and
steer the boat on a
constant heading.
Step 6. To engage
autotune:
Press and HOLD the GPS
[Select Load] button. While
holding down the [Select
Load] button, Press and
release the [Deckmount]
button once quickly. Release
the [Select load] button.
Step 2. Press, release,
and light up the [Set-
up] button (left) LED
will light.
Step 3. Press and release
the [Left Chevron] button
two times, and light up #5
LED.
Step 4. Press and release
the [Right Chevron]
button two times, and
light up #8 LED.
You will do autotuning at a xed RPM, don’t change throttle settings once the
autotuner has been started. (If autotune fails try it again at a slower speed).
Make sure the engine is trimmed all the way down and trim planes are fully
retracted, and make sure the boat isn’t listing. Don’t move around in the boat
while autotune is underway. If your boat has a vee bottom and tends to roll a lot
when the rudder moves, you will get better autotuning results by doing autotune
at lower RPMs than indicated above.
Step 7. The Autotuner will zigzag the boat for 15 cycles. If you run out of room, abort the tuner and
try it again in a spot where you have more room to maneuver. You would like to see the time for one
complete zigzag cycle to be between 3 and 6 seconds. Adjust RPM up to reduce cycle time and adjust
the RPM down to increase the cycle time. The zigzagging will stop when the autotuner is done. Be
prepared to regain control of the boat.
Continued on Next Page