Kohler SV810-840 Service Manual page 38

Section 5
Fuel System and Governor
Troubleshooting - Carburetor Related Causes
Condition
or stalls at idle speed.
black, sooty exhaust smoke,
governor hunting, or excessive
governor hunting or excessive
4. Fuel leaks from carburetor.
Troubleshooting Checklist
When the engine starts hard, runs roughly or stalls
at low idle speed, check the following areas before
gasoline.
• Make sure the fuel tank cap vent is not blocked
and that it is operating properly.
• Make sure fuel is reaching the carburetor. This
fuel pump for restrictions or faulty components
as necessary.
5.6
Possible Cause/Probable Remedy
2a. Clogged air cleaner. Clean or replace.
linkage to ensure choke is operating properly.
fuel needle (some models).
d. Float level is set too high. Separate carburetor air horn from
Replacement procedure.
seat and blow with compressed air.
needle. Clean vent, ports, and air bleeds. Blow out all passages
with compressed air.
leaks.
fuel needle (some models).
b. Float level is set too low. Separate carburetor air horn from
Replacement procedure.
blow out with compressed air.
4a. Float level set too high. See Remedy 2d.
b. Dirt under fuel inlet needle. See Remedy 2e.
c. Bowl vents plugged. Blow out with compressed air.
d. Carburetor bowl gasket leaks. Replace gasket.
• Make sure the air cleaner base and carburetor are
securely fastened to the engine using gaskets in
good condition.
• Make sure the air cleaner element (including
the precleaner if equipped) is clean, and all air
cleaner components are fastened securely.
• Make sure the ignition system, governor system,
are operating properly.
If the engine is hard-starting, runs roughly or stalls
at low idle speed, it may be necessary to service the
carburetor.