Prepare The Mounting Location - Humminbird PiranhaMAX 155 Installation And Operation Manual

Prepare the Mounting Location

After determining the mounting location for the transducer, follow the steps
below to position and mount the transducer bracket.
Positioning the Mounting Bracket
level
Boat Hull Types Require
Different Mounting Positions
1/8" for aluminum
1/4" for fiberglass
Using the Mounting Bracket
to Mark the Initial Drill Holes
mark initial drill
holes
1. Make sure that the boat is level on the trailer,
2. Hold the mounting bracket against the transom
Figure 12
Figure 13
3. Continue to hold the bracket on the transom of
3rd hole
Figure 14
both from port to starboard and from bow to
stern, by placing your level on the deck of the
boat, first in one direction, then in the other.
of the boat in the location you have selected
(Figure 12). Align the bracket horizontally, using
the level. Make sure that the lower screw hole
protrusion does not protrude past the bottom of
the hull, and there is at least 1/4" clearance
between the bottom of the bracket and the
bottom of the transom for fiberglass boats, and
1/8" clearance for aluminum boats (Figure 13).
NOTE: If you have a flat-bottomed aluminum boat,
some additional adjustment may be needed to
accommodate the rivets on the bottom of the boat
(i.e. the gap may need to be a little smaller than
1/8"). This will help you to avoid excessive
turbulence at high speeds.
NOTE: If your propeller moves clockwise as the
boat moves forward (as you're facing the stern of
the boat from behind), mount the transducer
on the starboard side, and align the bottom
right corner of the mounting bracket with the
bottom of the boat. If your propeller moves
counterclockwise as the boat moves forward (as
you're facing the stern of the boat from behind),
mount the transducer on the port side, and align
the bottom left corner of the mounting bracket with
the bottom of the boat.
the boat, and use a pencil or marker to mark
where to drill the two mounting holes. Mark
the drill holes near the top of each slot, making
sure that your mark is centered in the slot
(Figure 14).
9
Transom Transducer Installation