Evinrude 4906B 4HP 1969 Owner's Manual page 297

8-38 LOWER UNIT
performed with the lower unit erect (in its
normal position), or inverted
In both positions, the cavitation
supporting surface.
3- Remove and
from the top of the drives haft.
WATER PUMP REMOVAL
AUTHOR'S APOLOGY
The photographs
involved a water pump from a electric
lower unit. However,
service procedures
manual shift. Therefore,
wiring shown in the photographs.
4-
Remove the O-ring from the top of
the water pump.
securing the water pump to the lower unit
housing. It is very possible corrosion
cause the screw heads to break-off
attempt to remove them is made.
should happen, use a chisel and breakaway
the water pump housing from the lower unit.
EXERCISE CARE not to damage the lower
unit housing.
5- After the screws have been removed,
slide the water pump, impeller, the impeller.
key, and the lower water pump plate upward
and free of the driveshaft.
(upside down).
plate is the
DISCARD the O-ring
taken for this section
shift
the pump and the
are identical for the
disregard any
Remove the screws
will
when an
If this
GOOD NEWS
If the only work to be performed
service of the water
following steps, and proceed directly to the
Water Pump Assembling portion of this sec-
tion on Page 8-48.
LOWER UNIT DISASSEMBLING
6- CAREFULLY
driveshaft and remove
unit.
7- Turn the lower unit upside down and
again clamp it in the vise or slide it into the
wooden block, if one is used.
examine the lower portion of the unit.
cap is considered that part below the split
is
pump, disregard the
pull upward on the
it from the lower
Carefully
The