Garmin 190-01166-02 User Manual

Drive to calm, open water and, if the Sea Trial Wizard does not start automatically, select 

 > 

 > 

 > 

 > 

. The Sea Trial Wizard welcome screen appears on the GHC 10. Select 

 to start 

the wizard.

1.  Follow the directions on the GHC 10.
2.  Note the RPM reading from the tachometer on the dashboard of your boat at the point your boat transitions from displacement to 

planing speed.

3.  If the tachometer value does not match the value on the GHC 10, use the arrows to adjust the value. 
4.  When you are finished, select 

.

 

notE: If you have a displacement-hull boat, there will not be a transition point for you to set. Instead, adjust the Planing RPM to 

the highest possible value (6,000 RPM).

1.  Before you begin the compass calibration procedure, drive your boat in a slow, straight line and wait for the wake generated by the 

planing RPM configuration procedure to pass. 

2.  Select 

. 

3.  When instructed, turn the boat slowly clockwise, taking care to make 

as steady and flat a turn as possible. turn slowly so that 

the boat DoES not list.

  notE: If you have a dual-engine boat, slowly run the port engine forward and the starboard engine in reverse to pivot on a 

stationary position.

4.  After you successfully complete the calibration, and the GHC 10 displays a completion message, select 

. If the calibration 

fails, select 

 to begin the process again.

1.  Before you begin the Autotune procedure, adjust the throttle so that the boat travels at a constant RPM below planing speed, with 

enough speed to maintain responsive steering.

2.  Select 

 when you are ready.

3.  The boat will perform a number of zigzag motions while the Autotuning is in progress.
4.  When the GHC 10 displays a completion message, select 

. 

is complete. 

Increase the throttle approximately 200 RPM and select 

 to begin the process again.

If it fails again, continue retrying the process adding increments of 200 RPM.
If you reach planing speed through adding increments of 200 RPM and the autotune procedure continues to fail, reduce speed 

below planing speed and select 

 to begin an alternate autotuning procedure.

The Alternate Autotune is only applicable to a small number of boats, and should be the last attempt at autotuning. Do not perform the 

Alternate Autotune until you are sure the standard autotune procedure will not work on your boat.
note: If the autotune procedure continually fails, it is possible that air is present in the hydraulic system. It is also possible that a 

leak or other problem exists in the hydraulic system on your boat. If you cannot complete the autotune procedure or the Alternate 

Autotune, check the hydraulic system for leaks or other problems, and bleed it completely if necessary.

Setting north:
1.  To complete this step, you must have a large stretch of open water available. Be sure to have at least 45 seconds of hazard-free, 

open water available while at planing speed.

2.  Drive the boat in a straight line, at planing speed, and select 

 when you are ready.

3.  When the GHC 10 displays a completion message, select 

. If the calibration fails, select 

 to begin the process again.

•
•
•