Kohler Courage SV710-740 Service Manual page 34

Most engines are equipped with an in-line filter.
Periodically inspect the filter and replace annually or
every 100 hours with a genuine Kohler filter.
These engines use low permeation rated fuel lines,
certified to comply with California and U.S. EPA
evaporative emission requirements. Fuel lines that do
not meet these requirements may not be used.
1. Check the following:
a. Make sure the fuel tank contains clean, fresh,
proper fuel.
b. Make sure the vent in fuel tank is open.
c. Make sure the fuel valve is open.
d. Make sure vacuum and fuel lines to fuel
pump are secured and in good condition.
2. Check for fuel in the combustion chamber.
a. Disconnect and ground spark plug leads.
b. Close the choke on the carburetor.
c. Crank the engine several times.
d. Remove the spark plug and check for fuel at
the tip.
3. Check for fuel flow from the tank to the fuel
pump.
a. Remove the fuel line from the inlet fitting of
fuel pump.
b. Hold the line below the bottom of the tank.
Open the shut-off valve (if so equipped) and
observe flow.
4. Check the operation of fuel pump.
a. Remove the fuel line from the inlet fitting of
carburetor.
b. Crank the engine several times and observe
flow.
Order replacement hose through a Kohler Service
Center.
When the engine starts hard, or turns over but will
not start, it is possible that the problem is in the fuel
system. To find out if the fuel system is causing the
problem, perform the following tests.
2. If there is fuel at the tip of the spark plug, fuel is
reaching the combustion chamber.
If there is no fuel at the tip of the spark plug,
check for fuel flow from the fuel tank (Test 3).
3. If fuel does flow from the line, check for faulty
fuel pump (Test 4).
If fuel does not flow from the line, check the
fuel tank vent, fuel pickup screen, in-line filter,
shut-off valve, and fuel line. Correct any observed
problem and reconnect the line.
4. If fuel does flow from the line, check for faulty
carburetor. (Refer to the Carburetor portions of
this section.)
If fuel does not flow from the line, check for a
clogged fuel line. If the fuel line is unobstructed,
check for overfilled crankcase and/or oil in pulse
line. If none of the checks reveal the cause of the
problem, replace the pump.