Kohler XT-6 User Manual

18
Fuel System
KohlerEngines.com 14 690 01 Rev. G
Typical carbureted fuel system and related components
include:
● Fuel tank.
● Fuel line.
● In-line fuel lter.
● Fuel tank lter (in-nipple).
● Fuel shut-off valve (if equipped).
● Carburetor.
Fuel tank outlet is located above carburetor inlet,
allowing gravity to feed fuel through in-line lter and fuel
line to carburetor.
Fuel enters carburetor through fuel shut-off valve and
sediment bowl and then goes to carburetor oat bowl.
Fuel is drawn into carburetor body and mixed with air.
This fuel-air mixture is then burned in engine combustion
chamber.
FUEL RECOMMENDATIONS
Refer to Maintenance.
FUEL LINE
Low permeation fuel line must be installed on carbureted
Kohler Co. engines to maintain EPA and CARB
regulatory compliance.
FUEL SHUT-OFF (if equipped)
Some engines are equipped with a fuel shut-off located
at carburetor. It controls fuel ow from tank to carburetor.
FUEL SYSTEM TESTS
When engine starts hard, or turns over but will not start, fuel system might be causing problems. Test fuel system by
performing following tests.
1. Check for fuel in combustion chamber.
a. Disconnect and ground spark plug lead.
b. Close choke on carburetor.
c. Crank engine several times.
d. Remove spark plug and check for fuel at tip.
2. Check for fuel ow from tank to carburetor.
a. Remove fuel line from inlet tting of carburetor.
b. Use an approved fuel container to catch fuel, and
hold line below bottom of tank to observe fuel
ow.
3. Check operation of fuel shut-off valve.
a. Remove fuel sediment bowl under inlet tting of
carburetor.
b. Turn fuel shut-off valve ON and OFF and observe
operation.
Condition Conclusion
Fuel at tip of spark plug. Fuel is reaching combustion chamber.
No fuel at tip of spark plug. Check fuel ow from fuel tank (step 2).
Fuel ows from fuel line. Check operation of fuel shut-off valve (step 3).
No fuel ow from fuel line. Check fuel tank vent, in-line lter threaded into tank, and
fuel line. Correct any observed problem and reconnect
line.
Fuel ows from valve. Check for dirt and water in sediment bowl and screen.
Clean bowl and screen as needed. Check for faulty
carburetor, refer to Carburetor.
No fuel ows from valve. Check for a restriction in fuel shut-off valve or inlet elbow.

Kohler XT-6 Specifications

General

Brand	Kohler
Model	XT-6
Category	Engine
Language	English