Evinrude 4906B 4HP 1969 Owner's Manual page 98

If there is no fuel discharged
line, the check valve in the squeeze bulb
may be defective, or there may be a break
or obstruction in the fuel line.
If there is a good fuel flow, then crank
the engine. If the fuel pump is operating
properly, a healthy
pulse out of the line.
Continue cranking the engine and catch-
ing the fuel for about 15 pulses to determine
if the amount of fuel decreases
pulse or maintains
decrease in the discharge
striction in the line.
plugged, the fuel stream may stop. If there
is fuel in the fuel tank but no fuel flows out
the fuel line while the engine is being crank-
ed, the problem may be in one of several
areas:
1- Plugged fuel line from the fuel pump
to the carburetor.
2- Defective a-ring in fuel line connec-
tor into the fuel tank.
3- Defective O-ring in fuel line connec-
tor into the engine.
4- Defective fuel pump.
5- The line from the fuel tank to the
fuel pump may be plugged; the line may be
leaking air; or the squeeze
defective.
6- Defective fuel tank.
7-
If the engine does not start
though there is adequate fuel flow from the
fuel line, the fuel inlet needle valve and the
seat may be gummed together
adequate fuel flow.
Fuel line connection
horsepower engine.
from the
stream of fuel should
I
with each
a constant amount.
indicates a re-
If the fuel line is
bulb may be
even
and prevent
at
the carburetor on a 9.5
A
Fuel connector
rings have a relative
fuel problems.
regular basis.
FUEL LINE TEST
On most installations,
provided with quick-disconnect
the tank and at the engine.
reason to believe
quick-disconnects,
placed as an assembly, or new a-rings
be installed.
Parts in a squeeze bulb replacement
SQueeze bulb, two check valves, and two tie straps
secure the bulb in the line.
TROUBLESHOOTING
with the O-ring visible.
short life and may be
The a-rings should be replaced
the fuel line is
fittings
If there is
the problem
the hose ends can be re-
A supply of new a-rings
kit include the
4-7
These 0-
the source of
on a
at
is at the
may
to