Raymarine L470 - Manual (Page 14)

Installation
8
Fig. 2-6
Mounting
the Transducer
Fig. 2-5
Correct Mounting
Position
Vertical transom –
place wedge this way Average transom angle–
no wedge necessary Sloping transom–
place wedge this way
For fiberglass hull – 1/8" to 1/4" (3.2 to 6 mm)
For aluminum hull – 1/4" to 3/8" (6 to 9 mm)
Rivets on the hull are
creating bubbles.
Lower the transducer
a bit. The bow of the transducer
is above the bottom of the
transom, creating
cavitation. The rear of the transducer
is too high, creating
cavitation.
2 to 5 2 to 5 2 to 5
No! No! No!
1 2 3
Insert screws 1 and 3
1/4" from the bottom of
slots, and screw 2
1/4" from the top of the
slot to allow room for
adjustment.
Correct
alignment
If screws are inserted
this way, it won’t be
possible to make the
height adjustment.
Incorrect
alignment