Garmin G3X Touch Installation Manual page 532

d) Select YAW DAMPER page and highlight the SERVO GAIN entry.
e) Adjust the servo gain so that the aircraft properly responds to the yaw body rates (tail
wagging)
i. Engage the autopilot in LVL mode with the aircraft approximately level
ii. With a GMC 30X Controller
iii. Fly a yaw doublet and engage the YD as the ball swings through the center
190-01115-01 G3X/G3X Touch Installation Manual - GDU 37X Config and Post Install Checkout
Rev. AC
1.Press the LVL button on the GMC 30X to engage the AP in LVL mode
2.Press the YD button on the GMC 30X to disengage the YD
1.Right foot rudder to swing ball left
Page 33-62