Owner's Manual

High Speed Transducer
2
530506-2_B
Deadrise: Another consideration is the angle of deadrise. The transducer, when mounted, should point straight down.
The design of the transducer will allow a deadrise of 15 degrees while remaining pointed straight down. If the
deadrise is greater than 15 degrees it will be necessary to angle the transducer slightly. While this does not
significantly degrade performance, you must keep in mind that the area you are viewing on your fishfinder screen may
be somewhat to one side of the boat.
2.
Mounting the Bracket
Mount the bracket, using the mounting template provided as a guide. This template serves two purposes: it allows
you to mark where the mounting holes should be drilled, and it provides a way to make sure that the deadrise of the
transom falls within the allowable limits.
1. Cut out the transducer mounting template from this sheet. Match the mounting bracket screw slots to the template
screw slots.
2. Hold the template on the transom of the boat in the location you have selected. Align the template vertically, making
sure that the lower edge of the transom on either side of the template falls within the horizontal lines on the template.
NOTE: If your propeller moves clockwise as the boat moves forward, mount the transducer on the starboard side, and use the
bottom left corner of the template. If your propeller moves counter-clockwise as the boat moves forward, mount the
transducer on the port side, and use the bottom right corner of the template.
3. Continue to hold the template on the transom of the boat, and use a pencil or punch to mark where to drill the mounting
holes shown on the template.
4. Using a 5/32” (4.0 mm) bit, drill the three holes only to a depth of approximately 1” (25 mm).
NOTE: On fiberglass hulls, it is best to use progressively larger drill bits to reduce the chance of chipping or flaking the outer
coating.
5. Use a marine-grade silicone sealant to fill the drilled holes, especially if the holes penetrated the transom wall.
6. Align the metal mounting bracket with the mounting holes. The center slot of your mounting bracket should be above
the two outer slots (this bracket and all other hardware supplied is top quality stainless steel for maximum strength and
corrosion protection). Insert the three 1” (25.0 mm) flat head wood screws into the drilled holes, but do not completely
tighten.
3.
Assembling the Transducer
Attach the pivot to the transducer using the hardware provided.
1. Attach the pivot to the transducer body as shown in the illustration using the two 1/4"–20 x 5/8" (16 mm) machine
screws, toothed washers, and square nuts. The toothed washers must fit on the inside of the transducer ears, between
the pivot and the ears. The square nuts will be prevented from rotating by the pocket in the back of the pivot.
NOTE: An Allen wrench is provided which fits all of the 1/4”–20 screws, but do not fully tighten the screws at this time.
4.
Attaching the Transducer to the Bracket
1. Slide the assembled transducer into the metal bracket from the bottom, aligning the large hole at the top of the bracket
with the hole in the pivot.
© 2005 Humminbird®, Eufaula AL, USA.
All rights reserved.
Insert the Square Nuts
Attaching the Bracket
Pivot
Toothed
Washer
Attach the Pivot
Acceptable Deadrise Excessive Deadrise Template angled to keep
Deadrise in allowable angle