GMR™ FANTOM™ 18X/24XINSTALLATION INSTRUCTIONSImportant Safety InformationWARNINGFailure to follow these warnings, cautions, and notices could result in personal injury, damage to the vessel ordevice, or poor product performance.See the Important Safety and Product Information guide in the product box for product warnings and otherimportant information.The radar transmits electromagnetic energy. To avoid possible personal injury, damage to the vessel or device,or poor product performance, ensure that the radar is installed according to the recommendations in theseinstructions and that all personnel are clear of the path of the radar beam before transmitting. When properlyinstalled and operated, the use of this radar conforms to the requirements of ANSI/IEEE C95.1-1992 Standardfor Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields.To avoid possible personal injury, do not look directly at the antenna at close range when the radar istransmitting. Eyes are the most sensitive part of the body to electromagnetic energy.When connecting the power cable, do not remove the in-line fuse holder. To prevent the possibility of injury orproduct damage caused by fire or overheating, the appropriate fuse must be in place as indicated in theproduct specifications. In addition, connecting the power cable without the appropriate fuse in place voids theproduct warranty.CAUTIONThis device should be used only as a navigational aid. Using the device for any purpose requiring precisemeasurement or direction, distance, location, or topography may result in personal injury or damage to thevessel.To avoid possible personal injury, always wear safety goggles, ear protection, and a dust mask when drilling,cutting, or sanding.Opening the device may result in personal injury and/or damage to the device. This device contains no user-serviceable parts, and should be opened only by a Garmin®authorized service technician. Any damage resultingfrom opening the unit by anyone other than a Garmin authorized service technician will not be covered by theGarmin warranty.NOTICEWhen drilling or cutting, always check what is on the opposite side of the surface to avoid damaging the vessel.Software UpdateYou must update the Garmin chartplotter software when you install this device. For instructions on updatingthe software, see your chartplotter owner's manual at support.garmin.com.Tools Needed• Drill• 9.5 mm (3/8 in.) drill bit• 32 mm (1 1/4 in.) drill bit (optional)• 4 mm (5/32 in.) hex wrench• 13 mm (1/2 in.) wrench and torque wrench• Marine sealantGUID-37571E09-A387-48EF-9FD8-D98FD43CBF80 v1October 2021