Evinrude 4906B 4HP 1969 Owner's Manual page 38

a
Using flush attachment
to
up clean the engine
water.
fresh This arrangement
operating the engine at
ments.
Sometimes during
dures, it is necessary to run the engine with
a flush device attached
NEVER operate
the engine over 1000 rpm
with a flush device attached,
engine may "RUN-A-WA Y" due to the no-
load condition on the propeller.
way" engine could be severely damaged.
the name implies, the flush device is pri-
marily used to flush the engine after use in
salt water or contaminated
Regular use of the flush device will prevent
salt or silt deposits from accumulating
the water passageway.
ately after flushing, keep the motor in an
upright position until all of the water has
drained from the drive shaft housing.
will prevent water from entering the power
head by way of the drive shaft housing and
the exhaust ports, during the flush.
also prevent residual water from being trap-
ped in the drive shaft
passageways.
To test the water pump, the lower unit
MUST be placed in a test tank or the boat
moved into a body of water.
now work to supply a volume to the engine.
Small horsepower engine showing
fish line, wrapped around the propeller
ed fish line can cut through
of
propeller causing loss lubricant
a
with garden hose hook-
water
circulation system with
may also be used while
idle speeds to make adjust-
adjustment proce-
to the lower unit.
because
A "run-a-
fresh water.
During and immedi-
This
It will
housing and other
The pump must
debris, including
Shaft. Entangl-
the oil seal behind
from the lower unit.
Water pump installed
unit.
the
Lack of adequate
water pump thru the engine will cause any
number of power
As
stuck rings, scored
pistons, etc.
2-13 PROPELLER
in
Check
cracks, or bent condition.
damaged, the local mar ine dealer can make
repairs or send it out to a shop specializing
in such work.
Example
have been replaced
the
was sustained.
PROPELLER
on a small horsepower
water supply from the
head failures,
cylinder walls, burned
the propeller blades
If the propeller is
of a
damaged propeller.
long before this amount
2-13
lower
such as
for nicks,
This unit should
of
damage