GMR 600/100 Series Installation Instructions Installing the Mounting Studs and Seals1. Remove the hatch on the front of pedestal by loosening the screw and lifting the hatch off of the hinges as shown in Figure 1.2. Use a 5 mm Allen wrench, to install the M10 x 71 mounting studs (Figure 2) in the pedestal matching the hole pattern that was selected.Tighten the mounting studs until they bottom out in the pedestal. Do not overtighten the studs to avoid damaging the pedestal. The mountingstuds have a thread-locking patch applied at the factory.Optional: Apply moisture-inhibitive grease or paste to the four studs prior to installation.3. Install the seals onto the pedestal (Figure 3).Figure 1 Figure 2 Figure 3Mounting the RadarMount the radar with either end pointed toward the bow. Ensure it is mounted along the Bow-Stern Axis line indicated on the GMR400/600/1200 Series Mounting Template. If the end with the hatch is pointed toward the bow, the Front of Boat Offset setting on the chartplottermust be set to 180° (Figure 4). To adjust the Front of Boat Offset on the chartplotter, see page 7.To mount the radar:1. (Skip to step two if you are using a pre-drilled Garmin compatible Furuno ® or Raymarine ® mount.) Determine a suitable mounting locationand tape the Mounting Template in place. The Mounting Template has two hole patterns: Option A and Option B. Determine the mostappropriate patterns from the two patterns available on the Mounting Template (Option A or Option B). Use a 1/2 in. (13 mm) bit to drill thefour mounting holes.2. Hoist the radar into position using the supplied strap. Position the strap over the ends of the antenna mount as shown in Figure 5. Ensurethat you position the strap as close to the radar as possible.3. Fasten the radar to the mounting surface using the M10 hex nuts, spring washers, and flat washers in the order shown in Figure 6. The M10nuts should be torqued to 130 lbf-in (11 lbf-ft) (1.5 kgf-m).Figure 5 Figure 6flat washerspring washerM10 hex nutFigure 4BowSternBearing Offset = 0°Bearing Offset = 180°Waveguide protective cover