Humminbird 1157c Combo Installating And Operation Manual page 40

Inserting the Pivot Bolt
3. Put the pivot bolt through the assembly to hold it in position and loosely install the nut, but do
NOT tighten the nut at this time. Insert the pivot arm assembly into the mounting bracket. Do NOT
snap the assembly closed, as you will need to access the mounting bracket in the next step.
NOTE: If the pivot assembly is snapped closed over the mounting bracket, use a flat head screwdriver or
similar tool to gently pry the assembly away from the mounting bracket.
4. Align the mounting bracket transducer assembly with the drilled holes in the transom. With a
5/16" socket driver, mount the assembly to the transom using the two #10 - 1" long screws
provided.
Mounting the Assembly to the Transom
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.
5. Snap the pivot arm down into place.
6. Adjust the initial angle of the transducer from back to
front by rotating the transducer until the side seam on
the transducer is almost parallel with the bottom of the
boat, one click at a time in either direction.
30
Inserting the Pivot Arm Assembly
Into the Mounting Bracket