Humminbird MEGA 360 UNIVERSAL Installation Manual page 16

4. Place the universal bracket on the mounting surface and align the bolt holes
with the drilled mounting holes. Apply anti-seize to the four (4) 1/4"-20 bolts
(not included) and insert them through the bolt holes and into the drilled
mounting holes.
NOTE: Apply marine-grade silicone caulk or sealant (separate purchase
required) to both bolts and drilled holes as needed to protect your boat from
water damage.
5. From under the deck or gunwale, install the 1/4" fender washer and the
1/4" - 20 nylon insert hex nut (not included) onto each screw. Hand-tighten
only! Use an adjustable socket or wrench to hand-tighten the nuts until they
contact the washers. Then tighten the nuts an additional 2 full revolutions.
Hand-tighten only!
deck or
gunwale
Installing the Mount
Installing the Bolts
1/4" - 20 bolt
1/4" fender washer
1/4" - 20 nylon
insert nut
10