Lowrance HDS series Installation Manual page 18

Aligning ratchets on two-piece bracket
The two-piece bracket includes four black plastic ratchets. The ratchets are
used to align the transducer with the boat hull. Each ratchet has the letters A-F
molded into it.
If the transducer will not adjust with its face parallel to the ground.
Bracket
3:
Slide the transducer in the bracket
and temporarily slide the bolt through
the transducer bracket.
5:
Remove the transducer and ratchets
from the bracket. Reinsert the ratchets
into the bracket, this time with the
letter "B" aligned with the dot stamped
in the bracket. Reassemble the
transducer and bracket and place it against the transom. Again, check to see if the
transducer will adjust so its face is parallel with the ground. Repeat this process until the
transducers face will adjust so that it is parallel with the ground.
Alignment mark
17
1:
Place two of the ratchets
in each side of the bracket
with the letter "A" aligned with
the alignment mark molded
into each bracket.
2:
Now place the other two
ratchets on the transducer with
the letter "A" aligned in the
12 o'clock position on the
transducer stem.
4:
Hold the transducer assembly
against the transom. Look at
he transducer from the side. Try
to adjust the transducer so its
face is parallel to the ground.
If it does, then the
"A" position is correct.
Ratchet
Transom