Lowrance electronic LMS-337C DF - Manual (Page 26)

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Place the ratchets into the bracket with the letter "A" aligned with the
alignment mark molded into the bracket. Place the ratchets onto the
transducer with the letter "A" aligned with the 12 o'clock position on
the transducer stem. These positions set the transducer's coarse angle
adjustment for a 14
° transom. Most outboard and stern-drive tran-
soms have a 14
° angle.
Insert and align ratchets.
Add ratchets to bracket and transducer.
2. Aligning the transducer on the transom.
A. One-piece bracket: Slide the transducer between the two ratch-
ets. Temporarily slide the bolt though the transducer assembly and
hold it against the transom. Looking at the transducer from the side,
check to see if it will adjust so that its face is parallel to the ground.
If it does, then the "A" position is correct for your hull.
Alignment letters
Alignment
positions
Transducer bracket
Transducer
Transducer
bracket
Ratchet
Ratchet
Transducer