190-00726-00 Rev. A Garmin G900X Pilot’s Guide 3-21ENGINE INDICATION SYSTEMLEAN DISPLAYThe EIS Lean Display provides information and a user interface to perform engine leaning. Exhaust gas(EGT) and head (CHT) temperatures for each cylinder are displayed in bar graph form with a readout for thetemperature of the selected cylinder shown below each graph. Turbine inlet temperature (TIT) is also shownfor turbocharged aircraft.Accessing the EIS Lean Display:1) Select the ENGINE Softkey.2) Select the LEAN Softkey.3) To return to the default Engine Display, select the ENGINE or BACK Softkey.By default, the cylinder with the hottest temperature is selected (number highlighted in light blue) when theLEAN Softkey is selected. Bars for cylinders with temperatures in the normal range are shown in white. Onthe CHT Bar Graph, a warning condition for a cylinder is indicated in red.Since only one cylinder’s EGT and CHT are displayed at a time, this information can be cycled through foreach cylinder using the CYL SLCT Softkey; the selected cylinder’s number is highlighted in light blue on thebar graphs. This softkey is disabled when Leaning Assist Mode is selected or when a cylinder experiences awarning (red) condition; the softkey remains disabled until the temperature returns to normal.Monitoring the desired cylinder’s temperatures:From the Lean Display, select the CYL SLCT Softkey to cycle through each cylinder and view its temperatureinformation. The selected cylinder number is highlighted in light blue.While in Reversionary Mode, the leaning assist function is available from the Lean Display to assist in theleaning process.Accessing Leaning Assist Mode:1) Select the ENGINE Softkey.2) Select the LEAN Softkey.3) Select the ASSIST Softkey to identify the peak.4) Select the ASSIST Softkey again to exit Leaning Assist Mode.
