Evinrude 4906B 4HP 1969 Owner's Manual page 387

10-6 MAINTENANCE
Submerged While Running
Special Instructions
If the engine was running when it was
submerged, the chances of internal
damage is greatly
engine has been recovered,
spark plugs and attempt
wheel with the rewind starter.
horsepower engines without a rewind start-
er, use a socket wrench on the flywheel nut.
If the attempt to rotate the flywheel fails,
the chances of serious internal damage, such
as, bent connecting rod, bent crankshaft, or
damaged cylinder, -is greatly increased.
all attempts to rotate the flywheel fail, the
powerhead must be completely
ed.
Submerged Engine - Fresh Water
SPECIAL WORD
As an aid to performing the restoration
work, the following steps are numbered and
should be followed in sequence.
illustrations are not included with the pro-
cedural steps because the work involved is
general in nature.
1- Recover the engine as quickly as pos-
sible.
2- Remove the hood and the spark plugs.
3- Remove the carburetor.
the carburetor, see Chapter 4.
4- Flush the outside of the engine with
fresh water tc remove
weeds, and other debris. DO NOT attempt to
start the engine if sand has entered
powerhead. Such action will only result in
serious damage to powerhead components.
Sand in the powerhead means the unit must
be disassembled.
5- Remove as much water as possible
from the power head. Most of the water can
be eliminated by first holding the engine in
a horizontal position with the spark plug
holes DOWN, and then cranking the engine
with the rewind starter
wrench on the flywheel nut.
6- Alcohol will absorb water.
fore, pour alcohol into the carburetor throat
and again crank the engine.
7- Lay the engine in a horizontal posi-
tion, and then roll it over until the spark
plug openings are facing UPWARD.
alcohol into the spark plug openings and
again crank the engine.
8- Roll the engine in the horizontal posi-
tion until the spark plug openings are again
facing DOWN. Pour engine oil into the
engine
increased. After the
remove the
to rotate the fly-
On larger
disassembl-
However,
To rebuild
silt, mud, sand,
the
or with a socket
There-
Pour
carburetor
crank the engine to distribute oil throughout
the crankcase.
9- With the engine still in a horizontal
position, roll
holes are again
approximately
into each spark
engine to distribute the oil in the cylinders.
10- Install
them to the torqu-e value given in the Ap-
pendix. Connect
the spark plugs.
If 11- Install the c:arburetor onto the engine
with a NEW gask et on the intake manifold.
12- Mount the -engine
body of water.
CAUTION: Wa.er must circulate through
the lower unit to the engine any time the en-
gine is run to prev-ent damage to the water
pump in the lower unit. Just five seconds
without water will damage the water pump.
Obtain FRESII fuel and attempt
the engine.
to run for
approxlanately
nate any water rennainlng in the engine.
Rust preventative
preparation for storage, as explained in the text.
throat and, at the same time,
it
ver until the spark plug
0
facing UPWARD.
onee teaspoon of engine oil
p:')lug opening.
the spark plugs and tighten
the high-tension leads to
in a test tank or
If the engine will start, allow it
an hour to elimi-
sprayed inside the engine in
to bee
Pour
Crank the
to start