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3. Using a 4 mm, #23, or 9/64" bit, drill three holes 22 mm (0.9"") deep at the locations indicated.
To prevent drilling too deeply, wrap masking tape around the bit 22 mm (0.9") from the point.
Fiberglass hull: Minimize surface cracking by chamfering the gelcoat. If a chamfer bit or coun-
tersink bit is not available, start drilling with a 6mm or 1/4" bit to a depth of 1 mm (0.04")
4. If you know your transom angle, the bracket is designed for a standard 13° transom angle.11°-
18° angle: No shim is required. Skip to step 3 in "Adjusting".
Other angles: A shim is required. Skip to step 2 in "Adjusting". If you do not know the transom
angle, temporarily attach the bracket and sensor to the transom to determine if the plastic
shim is needed.
5. Using the three #10 x 1-1/4" self-tapping screws, temporarily screw the bracket to the hull. DO
NOT tighten the screws completely at this time. Follow the step 1-4 in "Attaching the sensor
to the bracket", before proceeding with "Adjusting".
Attaching the sensor to the bracket
1. If the retaining cover near the top of the bracket is closed, open it by depressing the latch and
rotating the cover downward.
2. Insert the sensor's pivot arms into the slots near the top of the bracket.
3. Maintain pressure until the pivot arms click into place.
4. Rotate the sensor downward until the bottom snaps into the bracket.
5. Close the retaining cover to prevent the accidental release of the sensor when the boat is un-
derway.
Adjusting
1. Using a straight edge, align the underside of the sensor relative to the underside of the hull.
The stern of the sensor should be 1-3 mm (1/16-1/8") below the bow of the sensor or parallel
to the bottom of the hull.
Note: Do not position the bow of the sensor lower than the stern because aeration will occur.
2. To adjust the sensor's angle relative to the hull, use the tapered plastic shim provided. If the
bracket has been temporarily fastened to the transom, remove it. Key the shim in place on the
back of the bracket.
Step 2
Step 1
Latch
Pivot
Arm (2)
Retaining
cover
Step 3
Step 4
10
Slot (2)
1. MOUNTING
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