Evinrude 4906B 4HP 1969 Owner's Manual page 151

4-60 FUEL
7- Remove the retaining
round the pump housing.
the washer on each screw for use during
installa tion.
g; Lift the pump and cover
fuel tank, as shown.
9- Remove and discard the gasket from
the fuel tank. Clean any old gasket mater-
ial from the fuel tank surface.
10- Secure the pump housing in a vise, as
shown. This position will provide freedom
to work on the pump and pickup assembly.
Remove the nut and separate
f rorn the pump body. The pickup and screen
are sold only as an assembly.
11- Test operation
attempting to suck air up through the tube.
The attempt should be successful.
to blow air down through
attempt should fail.
allow air to pass up through
prevent the movement of air in the opposite
direction. If the check valve fails the tests,
clean the assembly
and then wash it thoroughly
water to prevent acid burn to the lips and
mouth when the test is repeated.
the test a second time.
pass the second test, the entire pickup as-
sembly MUST be replaced.
COVER
scews from a-
Take care to save
from the
the pickup
of the check valve by
Attempt
the tube. The
The check valve should
the tube but
in carburetor cleaner
with soap and
Perform
If the unit fails to
PICKUP
12- Remove the eight screws
pump body and lift the body free of the
pump. Take care not to damage or loose the
two springs, two washers,
diaphragm. Observe
parts: The spring on top of the diaphragm;
the rubber washer and spring to the right;
the sm all disc in t he center, as shown in the
accompanying illustration.
13- Remove the spring from the top of
the diaphragm. Lift the rubber washer and
spring from the right side of the diaphragm.
FUEL
from the
disc, and the
the relationship
AIR RELI EF
VALVE
of