Westerbeke ATOMIC 4 User Manual

SECT ION II
INSTALLATION
1. PREPARING FOR INSTALLATION
Remember that as much of the work
of installing an engine takes place
under and around the boat as inside.
Provide plenty of room. Remember,
too, that the boat and the engine
amount to a considerable weight and
all blocking must be strong enough
to support this weight plus that of
the people working in the boat.
As the first step, shore up the boat
until tbe bull is approximately
three feet off tbe floor. For most
small boats, a three-point suspen-
sion will be sufficient. Blocking
should be placed about six feet
abaft tbe bow and at each corner of
the transom. Tbis type of blocking
will give adequate support and at
the same time leave tbe stern sec-
tion free of obstruction. On larger
boats,extra blocking sbould be used
along tbe keel.
Tbe next step in tbe procedure is
determining tbe location and angle
of the shaft hole. A number of
things must be considered before
tbis can be establisbed.(See Fig.l)
The width of tbe rudder, size of
the propeller, and the clearance
between the propeller and tbe bot-
tom of the boat (minimum 2").
Clearance between tbe rudder and
tbe propeller sbould not be less
tban 4", and room to allow removal
of the propeller witbout first re-
Fig.l Location
of Underwater Gear
moving
the rudder is more satisfac-
tory. It is, of course, also neces-
sary to know the exact location of
tbe engine and tbe manufacturer's
recommended maximum and mInImum
angles of engine operation.
If full scale drawings of the boat
are available, locating tbe sbaft
bole and establishing the angle is
simple. It is only necessary to lay
down a full-sized profile in some
convenient spot and place over this
drawing full-size cutouts of the
engine,rudder and propeller in their
proper places. Tbe cutout for the
propeller need only be an oblong of
cardboard with tbe center carefully
marked. Tbe length sbould equal tbe
diameter, and. tbe widtb, tbe pitcb
divided by tbe number of blades. For
example, a 12 x 12 propeller would
be represented by a piece 12" long
and 4" wide for a three-blade prop
and 6" wide for a two-blade. Tbe
engine cutout should be a fairly
accurate reproduction of the lower
balf of the engine with the sbaft
centerline clearly marked. This
sbould be drawn witb care on a large
piece of paper using tbe dimensions
given on tbe engine scale .. drawing.
With the rudder and propeller fac-
similes in place and proper clear-
ance accounted for, the cutout of
tbe engine is then moved about un-
til tbe centerline of tbe shaft
lines up with tbe centerline of tbe
propeller, and tbe spot and angle
wbere this line passes througb tbe
keel carefully noted. The position
of tbe engine is then carefully
cbecked to be sure there is suffi-
cient clearan~e between it and tbe
bottom of tbe boat and tbat tbe angle
of tbe engine does not exceed tbe
recommended operating angle (5 to
14 degrees in most engines). The
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Westerbeke ATOMIC 4 Specifications

General

Brand	Westerbeke
Model	ATOMIC 4
Category	Engine
Language	English