Humminbird PiranhaMAX 155 Installation And Operation Manual page 20

Inserting the Pivot Bolt
Figure 18
Mounting the Assembly
to the Transom
Figure 19
Figure 20
Transom Transducer Installation
3. Put the pivot bolt through the assembly to
hold it in position and loosely install the nut,
but do NOT tighten the nut at this time
(Figure 18).
CAUTION! Do not use a high speed driver on this
combination of fasteners. Hand tighten only.
4. Align the mounting bracket transducer
assembly with the drilled holes in the
transom. With a 5/16" socket driver, mount
the assembly to the transom using the two
#10 - 1" long screws provided (Figure 19).
Hand tighten only!
NOTE: Make sure that the mounting screws are
snug, but do not fully tighten the mounting screws
at this time to allow the transducer assembly to
slide for adjustment purposes.
5. Adjust the initial angle of the transducer from
back to front by rotating the transducer until
the side seam on the transducer is almost
parallel with the bottom of the boat, one click
at a time in either direction (Figure 20 and 21).
Adjusting the Initial Transducer Angle
leading edge
Figure 21
12
one click too high
correctly aligned
(transducer side
seam aligned
with boat bottom)
trailing edge
one click too low