Navman TRANSOM MOUNT Installation Manual - Installing
Transom Mount Transducers Installation Manual
NAVMAN
4
Important: Do not cut the transducer cable
to shorten it.
1
Select a suitable position for the
transducer (see
Position of transducer -
previous page).
2
Tear the drilling template from inside the
back cover of this manual and cut to size.
3
Hold the drilling template in place on the
transom.
Mark four screw holes through the template
so that they will be positioned in the middle
of the transducer bracket’s slots:
•
For fibreglass (GRP) or wooden hulls,
ensure the entire bottom face of the
transducer will always be
approximately 1/4" (6 mm) (dual
frequency transducer 1/2" (12 mm))
beneath the surface of the water,
including when the boat is at speed.
•
For aluminium hulls, ensure the entire
bottom face of the transducer will
always be approximately 1/2" (12 mm)
(dual frequency transducer 3/4" (18
mm)) beneath the surface of the water,
including when the boat is at speed.
Note: Locating the screws at the mid-
points in the slots enables the transducer
to be moved up or down later.
4
Drill the four screw holes 5/64" (2 mm)
diameter and at right angles to the
transom, so that when the screws are
tightened the screw heads sit flat.
Installing
5
Attach the mounting bracket with the four
longer stainless screws provided, slide the
bracket up or down until the screws are in
the middle of the slots, then tighten the
screws temporarily.
6
If necessary, loosen the transducer pivot
bolt so that the transducer can rotate.
Note: the transducer rotates in ‘clicks’ of
7 degrees.
7
Hold a straight edge on the bottom of the
hull and rotate the transducer so that the
bottom surface of the transducer is parallel
to the bottom of the hull (to the closest click).
8
Push the end of the transducer down by one
click. Tighten the pivot bolt until the rubber
washer on the pivot bolt starts to compress,
then add another 1/4 turn. If the transducer
kicks up when at speed, then tighten the pivot
bolt more.
Note: The face of the transducer should
face forward by about 7 degrees when the
boat is moving.
Push end down
1 click
1/4" (6 mm) or
1/2" (12 mm) or
3/4" (18 mm)
Parallel
Drill 5/64" (2 mm), apply
sealant in holes (after
adjusting and testing)
Pivot bolt
Screw transducer onto
transom
Fit the transducer
so that its axis is
vertical.
•
Always have the entire bottom face of the transducer under
water, when the boat is stopped or at speed.
Not interfere with, or be damaged by, launching or retrieving if the
boat is trailered.
Be convenient for the cable to go through the transom into the boat.