NOTE: It is often necessary to make several incremental transducer adjustmentsbefore optimum high speed performance is achieved. Due to the wide variety of boat hulls, however, it is not always possible to obtain high speed depth readings.

6.Once you have reached a consistently good sonar signal at the desired speeds, you are ready to lock down the transducer settings. Remove the transducer from the bracket (after noting where the ratchets are assembled), then re-align the mounting bracket against the transom of the boat to match the traced silhouette. Check the bracket position with the level again to make sure it is still level, then mark the third mounting hole using a pencil or marker. Unscrew and remove the mounting screws and the transducer bracket and set aside.

7.Drill the third mounting hole, using a 5/32” drill bit. Use a marine- grade silicone sealant to fill all three drilled mounting holes, especially if the holes penetrated the transom wall.

NOTE: On fiberglass hulls, it is best to use progressively larger drill bits to reduce the chance of chipping or flaking the outer coating.

Fully Tighten All Three

Mounting Screws

Figure 27

8.Re-position the transducer bracket against the transom of the boat, then hand-install all three screws. Make sure that the transducer location has not changed, then fully tighten

all three mounting screws (Figure 27). Hand tighten only! Re-install the transducer to the mounting bracket, making sure to assemble the ratchets in the same location they had before. (See Figures 18a - 18d and Figure 21 - 22). If you have performed the preceding procedures correctly, the transducer should be level and at the right height for optimal operation.

19Transom Transducer Installation