Raymarine DS400 & DS500 用户手册

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DS400 and DS500 Digital Fishfinders

Stabilize the bracket by installing the third bracket screw at the bottom of the 
center slot (see Figure 2-11 ). Using a 4mm, #23, or 9/64" drill bit, drill a hole 
22mm (7/8") deep. To prevent drilling too deeply, wrap masking tape around 
the bit 22mm (7/8") from the point.
Fiberglass hull—Minimize surface cracking by chamfering the gelcoat. If a 
chamfer bit or countersink bit is not available, start drilling with a 6mm or 
1/4" bit to a depth of 1mm (1/16").

Apply marine sealant to the threads of the #10 x 1-3/4" self-tapping screw to 
prevent water seepage into the transom. Tighten the screw.

            

Figure 2-11:

Stabilizing the Bracket

Route the transducer cable over the transom, through a drain hole, or through 
a new hole drilled in the transom above the waterline.

1. If a hole must be drilled through the transom, choose a location well 

above the waterline (see Figure 2-10 ). Check for obstructions such as 
trim tabs, pumps, or wiring inside the hull. Mark the location with a pen-
cil. Drill a hole using the appropriate size bit to accommodate the connec-
tor.

2. Route the cable over or through the transom.

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