Humminbird AS GR4 manual Stem Mount with 1 14 Thread, Access Under Mounting Location

Stem Mount with 1” - 14 Thread

Follow these steps to stem mount the GPS receiver:

1.If you have a pre-existing stem mount, skip to step 2. If you need to mount the antenna pole (stem), determine the best location, preplan and test the cable routing to your Matrix unit before any drilling or cutting of your boat surfaces, then route the 20’ (6 m) cable to the desired mounting location. Mark the location and drill a ³⁄₄” (19 mm) hole for the cable and cable connector.. If you have purchased hardware to stem mount your GPS receiver, follow the instructions included with that hardware to attach the stem to the boat.

Receiver Head

Receiver

Base

Antenna

Stem

Access Under Mounting Location

Follow these steps to deck mount the GPS receiver when you can route the cable down through the mounting surface:

1.Determine the best location, then test route the 20’ (6 m) cable fromthe Matrix control head to the planned mounting location of the GPS Receiver.

NOTE: 10’ extension cables may be purchased from Humminbird if your planned cable route exceeds 20’ (6 m). Maximum cable length, including extension cables, should not exceed 50’ (16 m). Visit our website at www.humminbird.com, or call our Customer Resource Center at 1-334-687-0503 to purchase extension cables.

Access Under

Mounting Location

NOTE: 10’ extension cables may be purchased from Humminbird if your planned cable route exceeds 20’ (6 m). Maximum cable length, including extension cables, should not exceed 50’ (16 m). Visit our website at www.humminbird.com, or call our Customer Resource Center at 1-334-687-0503 to purchase extension cables.

2.Screw on the receiver base to the stem first, making sure that the stem pipe does not protude from the receiver base. This adds protection to the cable when pulling it through the pipe stem. In addition to this, deburr the pipe edges to reduce cable abrasion.

Stem Mount, Attaching Receiver Base to Stem

NMEA

Pigtail

Taped

2.Mark the mounting location and drill a ³ ” (19 mm) hole for the cable and cable connector. Secure the NMEA pigtail to the cable with electrical tape. Route the cable.

3.Cover the cable hole with the GPS Receiver. Make sure the Receiver is flush against the surface and mark the two mounting holes with a pencil or awl.

4.Move the Receiver to the side and drill two pilot holes, using a ⁵ ” (4 mm) bit.

NOTE: Apply marine-grade silicone caulk or sealant to both screw and drilled holes as needed to protect your boat from water damage.

5.Align the GPS Receiver’s screw holes over the pilot screw holes and attach with the #6 - ³ ” Phillips head screws. Hand tighten only.

3.Use electrical tape to secure the NMEA pigtail to the cable as shown in the illustration.

NOTE: Leave the NMEA pigtail secured to the cable unless needed in order to make it easier to remove the GPS Receiver.

4.Route GPS Receiver cable through the stem and continue with the planned cable route.

5.Attach the GPS Receiver to its base using the included #6 - ¹⁄₄” screws. Hand tighten only.

NMEA

Pigtail

Cable Out

NMEA Pigtail

Taped to Cable

# - ¹ ” Mounting Screws

Stem

Cable Stop

Route

NOTE: If the mounting surface is thin or made of a light-weight material, you may need to add reinforcing material below the mounting surface in order to support the GPS Receiver.

Attaching the Receiver to

the Base, Making Sure Cable is Not Pinched

4

5