TRANSOM MEASURING
AND DRILLING
I nspect Transom Area
Transom Clearances
Make sure the transom and splash well area pro-
vide adequate outboard
clearances. Confirm that
the proposed mounting
hole locations will provide
adequate
clearance for mounting bolts and wash-
ers. Check the inside area of the transom for
obstructions prior to
drilling mounting holes.
Water Flow
Inspect the hull area directly
in
front of the hull's
centerline.
Boat-mounted equipment should not
create
turbulence
in
the water flow directly
in
front
of the outboard's gearcase.
Turbulence or disrup-
tions
in
the water flow directly
in
front of the gear-
case
will affect engine cooling and propeller
performance.
Measure Transom
Hull Centerline
Locate the centerline of the boat transom as it
relates to the hull (bottom) of the boat.
Use a straightedge to draw a
line connecting the
port and starboard chines. The chines
should be
used as reference points for determining the cen-
terline of the hull.
INSTALLATION AND PREDELIVERY
TRANSOM MEASURING AND DRILLING
Use a framing square to accurately place a line on
the transom. The
centerline of the hull should be
in
line with the keel of the hull and perpendicular
to the midpoint of the line connecting the port and
starboard chines.
•
3
1. Chine
DR5568
2.
Strake
3. Keel
4. Hull centerline
Transom Height and Shaft Length
The transom height dimension listed
in
TECHNI-
CAL DATA on
p.
30
is
the height of the boat tran-
som required by the outboard. This dimension
is
measured at the transom centerline, perpendicu-
lar to the bottom of the boat.
3
1. Transom height
DR3486
2. Anti-ventilation plate
3. Final position -
0 to 2
in
. (0 to
51
mm)
37
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