Humminbird 1158c Combo Installation And Operation Manual page 36

3. Attaching the Pivot to the Transducer
1. Attach the pivot to the transducer body, 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 knuckle, between the pivot and the knuckle. The square nuts will be
prevented from rotating by the pocket in the back of the pivot. An Allen wrench is provided
which fits all the 1/4"-20 screws, but do not fully tighten the screws at this time.
1
1 Insert the square nuts
Toothed Washer
2
Pivot
3
4 Machine Screw
4. Mounting the Transducer Pivot Assembly 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.
2. Insert the headed pin through the pivot holes in the bracket and pivot. The headed pin
can be inserted from either side of the bracket.
3. Place the nylon washer over the opposite end of the headed pin. Place the stainless washer
over the 1/4"-20 x 5/8" (16 mm) screw threads, then insert into the opposite end of the
headed pin and finger tighten only. The screw has a thread locking compound on the threads
to prevent loosening, and should not be fully tightened until all adjustments are made.
NOTE: The running position of the transducer is now completely adjustable. Subsequent adjustment
may be necessary to tweak the installation after high speed testing.
3
Transom Mount - Side Imaging®
5
1
4
2
Attach the Pivot
2
1
2
3
4
5
24
3
4
Screw
Headed Pin
Allen Wrench
Nylon Washer
Stainless Washer