Humminbird HELIX Series Installation Manual page 10

TRANSOM TRANSDUCER Installation Guide
rubber washer
flat washer
5. Align the mounting bracket transducer assembly with the drilled holes in the transom. With a
5/16" (8 mm) socket driver, mount the assembly to the transom using the two #10 - 1" (25.4
mm) long screws provided. 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.
3
| Confirm the Mounting Angle
You will need to adjust the initial angle of the transducer both vertically and horizontally to confirm
the transducer mounting angle.
1. Adjust the transducer assembly vertically, until the seam on the leading edge of the transducer
1
(see below) is level and just slightly below the hull.
2. Adjust the initial angle of the transducer from back to front until the side seam on the
transducer is almost parallel with the bottom of the boat, one click at a time in either direction
(see Adjusting the Initial Transducer Angle).
Downward Slant: The transducer has a natural downward slant of 4 to 5 degrees from leading edge
(closest to the boat transom) to trailing edge (farthest away from the boat). Looking at the back of
the transducer, the seam should be slightly below the bottom of the hull.
Down Imaging® Transducers: A downward slant is not required for Down Imaging Transducers.
Adjust the running angle so that the transducer is parallel to the water and submerged in the water.
1
1
Leading edge (the edge closest to the transom of the boat).
2
One click too high: the transducer is tilted out of the water and cannot maintain a sonar signal.
Installing the Pivot Bolt
rubber washer
flat washer
Adjusting the Initial Transducer Angle
pivot bolt
2
3
4
5
4
532239-5_A
Adjusting the Transducer
Mounting Position
LEVEL
4
Correctly aligned.