Engine Manual

42 TP-7095 4/18
3.8 Fuel System
WARNING
Explosive fuel vapors.
Can cause severe injury or death.
Use extreme care when handling, storing, and using fuels.
The fuel system. Explosive fuel vapors can cause severe injury or death. Vaporized fuels are highly explosive. Use extreme
care when handling and storing fuels. Store fuels in a well-ventilated area away from spark-producing equipment and out of the
reach of children. Never add fuel to the tank while the engine is running because spilled fuel may ignite on contact with hot parts
or from sparks. Do not smoke or permit flames or sparks to occur near sources of spilled fuel or fuel vapors. Keep the fuel lines
and connections tight and in good condition. Do not replace flexible fuel lines with rigid lines. Use flexible sections to avoid fuel
line breakage caused by vibration. Do not operate the engine in the presence of fuel leaks, fuel accumulation, or sparks. Repair
fuel systems before resuming engine operation.
Gas fuel leaks. Explosive fuel vapors can cause severe injury or death. Fuel leakage can cause an explosion. Check the
LPG vapor or natural gas fuel system for leakage by using a soap and water solution with the fuel system test pressurized to 6–
8 ounces per square inch (10–14 inches water column). Do not use a soap solution containing either ammonia or chlorine
because both prevent bubble formation. A successful test depends on the ability of the solution to bubble.
LPG liquid withdrawal fuel leaks. Explosive fuel vapors can cause severe injury or death. Fuel leakage can cause an
explosion. Check the LPG liquid withdrawal fuel system for leakage by using a soap and water solution with the fuel system test
pressurized to at least 90 psi (621 kPa). Do not use a soap solution containing either ammonia or chlorine because both prevent
bubble formation. A successful test depends on the ability of the solution to bubble.
Note:
Fuel system components are not adjustable and cannot be serviced. Contact your authorized KOHLER authorized
distributor/dealer for replacements.
3.8.1 Check Fuel Supply Pipe and Connections
With the fuel valve fully opened and the engine stopped, check all fuel system connections and lines for leaks using a soapy
water solution. Correct any leaks before restarting the engine. Do not start the engine if you can smell leaking gas. Have
any necessary service performed by a Kohler authorized distributor/dealer.
3.8.2 Check Fuel Level (LPG only)
With the fuel valve on the LPG tank fully closed and the engine stopped, check the fuel gauge on the LPG tank. Make sure that
the tank contains enough fuel for sustained operation. If not, refill the tank before restarting the engine.
Fully open the fuel valve on the LPG tank. Check all fuel supply connections and lines for leaks using a soapy water solution.
Correct any leaks before restarting the engine. Have any necessary service performed by a Kohler authorized distributor/dealer
or qualified LPG/NG technician only.