Garmin GRF 10 Installation Instructions Manual page 5

7 Tighten the ball-joint assemblies using an 8 mm wrench at the base.
8 Fasten the sensor to the mounting surface using the included screws.
9 With the rudder amidships and the sensor at center position, measure the distance from the ball-joint
assembly on the sensor to the location where you plan to attach the tiller-arm mount to the tiller arm.
10 If the threaded rod is too long, cut it to the correct length
11 Thread both of the standard M6 nuts onto the threaded rod.
12 Thread the rod into the ball-joint assembly connected to the sensor.
13 Thread the other end of the rod into the ball-joint assembly connected to the tiller-arm mount.
14 Fasten the tiller-arm mount to the tiller using the included screws.
15 Tighten the M6 nuts on the threaded rod against both of the ball-joint assemblies.
Cutting the Threaded Rod
If the included threaded rod is too long for your chosen installation location, you must cut it.
1 Thread one of the included standard M6 nuts onto the threaded rod.
Do not use one of the included M6 locknuts.
2 Measure and mark the threaded rod with electrical tape.
3 Using the appropriate saw, cut the threaded rod at the marked location.
4 Remove the nut from the threaded rod, turning it counter-clockwise over the cut area.
The nut should straighten any threads that may have been damaged while cutting the rod.
Connecting the Device to the Autopilot System
1 Route the cable from the sensor to the orange 12-pin connector on the ECU of the autopilot system.
The installation instructions provided with your autopilot system will help you identify where this connector is
located.
If needed, extension cables are available.
2 Connect the sensor to the autopilot system.
Configuring the Sensor
When connected to a Garmin autopilot system, the sensor is configured using the autopilot helm control or a
connected chartplotter.
NOTE: If an error appears during these steps, the sensor may have reached the limit of its movement range.
Make sure the sensor was installed correctly. If the problem persists, you can bypass this error by moving the
rudder to the farthest position that does not report an error.
1 On a helm control or the autopilot screen on a chartplotter, select
Installation Setup > Steering System Setup > Rudder Sensor Setup.
2 Position the rudder so the boat would steer fully starboard, and select OK.
3 After the starboard calibration is complete, position the rudder so the boat would steer fully port, and select
OK.
4 After the port calibration is complete, center the rudder position, let go, and select Begin.
The autopilot takes control of the rudder.
5 Wait while the autopilot calibrates the rudder.
6 Select an option:
• If the calibration finishes successfully, select OK.
• If the calibration does not finish successfully, repeat this procedure.
Installation Instructions
(Cutting the Threaded Rod,
> Autopilot Setup > Autopilot
page 5).
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