Boat transom
Boat transom
Stern tunnel
MOULD IN INSTALLATION
2b.
Cut of the bolting flange on the stern-tunnel
3b.
Grind off the gelcoat both inside and outside the
remaining “tube” atleast 10 cm down on the
“tube” (see FIG. 5).
4b.
Offer the stern tunnel to the desired position on
the transom and mark around the tube.
5b.
Cut the marked hole in the transom of the boat.
6b.
Grind off the gelcoat on the transom of the boat in
an area of atleast 10 cm / 4” around the hole, both
outside and inside (see FIG. 5).
7b
Offer the stern tunnel to the transom in the desired
horizontal position, then bond to the transom with
multi layers matt both inside and outside (see FIG.
6).
Take care not to reduce the internal diameter
much, as this will make it more difficult to mount
the thruster
8b
Apply gelcoat or similar on all bonded areas.
9b.
Install the gear leg on the stern-tunnel as de-
scribed in the installation manual for the thruster
but fit the oil feed pipe first.
Special installation points described on page 7 of
this manual.
10b.
The electromotor must be sturdily supported so
that the weight-arm tension from the motor weight
are not applied only on the tunnel (see FIG. 4)
11b.
Basic installation of the flexible coupling, motor
and electrical installation are described in the
thruster manuals.
Grind off the bolt flange and
the gelcoat both inside and
outside in the areas shown.
Stern thruster installation manual
Version 1.6 - 2005
4
FIG. 6
Bond multiple layers both
inside and outside
FIG. 5
WARNING!
Mould in installation is ONLY
for stern GRP tunnels.
Composite stern tunnels
(Part # 90052i and 90086i )
can not be moulded in this way.
