Centering Pins - Evinrude 4906B 4HP 1969 Owner's Manual

remove the crankcase
ing before the seal can be removed.
seal is then pressed out of the bearing, using
an arbor press, and a new seal installed.

3-10 CENTERING PINS

All Johnson/Evinrude
have at least one, and in most cases two,
centering pins installed
case cover. These pins index into matching
holes in the power head
crankcase cover is installed.
center the crankcase
head block.
The centering pins are tapered.
must be carefully checked to determine
they are to be removed from the cover.
most cases the pin is removed by using a
center punch and tapping the pin towards
the carburetor or intake
the crankcase.
When removing a centering
punch securely onto
strike the punch a good hard forceful
DO NOT keep beating on the end of the pin,
because such action
head until it would not be possible to drive
it out of the cover.
Centering pins are the first item to be
installed in the cover when replacing
crankcase cover.
with
Cylinder block the two centering
cover and lower bear-
The
outboard engines
through the crank-
block when the
These pins
cover on the power-
The pins
how
In
manifold side of
pin, hold the
the pin head, then
blow.
would round the pin
the
pins installed.
CENTERING PINS
a
Removing centering pin from the cylinder
3-11 MAIN BEARING BOLTS AND
CRANKCASE SIDE BOLTS
The main bearing
through the crankcase cover into the power-
head block. Most engines have two bolts
installed for the top main bearing, two for
the center main bearing, and two for the
lower main bearing.
In many cases the upper and lower main
bearing bolts are
Therefore, take time to tag and identify the
bol ts to ensure they will be installed
same location from which they were remov-
ed.
The crankcase side bolts are installed
along the edge of the crankcase
secure the cover to the
Removing
the main
head.
block.
bolts are installed
DIFFERENT lengths.
in the
cover to
cylinder block.
bearing power-
bolts from the
3-15