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Fuel System Inspection and Maintenance
Natural Gas/propane Fuel System
The fuel system installed on this engine has been designed
to various standards to ensure performance and reliability.
To ensure compliance to these standards, follow the
recommended maintenance schedule contained in this
section.
NOTICE The fuel system components have been
specifically designed and calibrated to meet the fuel system
requirements of the engine. If a fuel system component
fails to operate or develops a leak, it should be repaired or
replaced with the OEM recommended replacement parts.
pressure Regulator Maintenance and Inspection
• Check for any fuel leaks at the inlet and outlet fittings.
• Check for any fuel leaks in the regulator body.
• Check to ensure the regulator is securely mounted and
the mounting bolts are tight.
• Check the regulator for external damage.
Venturi/Throttle Control Device Maintenance and
Inspection
NOTICE A dirty air cleaner may significantly alter the venturi
performance.
• Leaks at all fittings.
• Ensure the venturi and throttle body are securely
mounted.
• Inspect air cleaner element according to the
recommended maintenance schedule found in this
section.
• Inspect air inlet hose connection and clamp. Inspect
hose for cracking, splitting, or chaffing, Replace if any
of these conditions exist,
• Check fuel line for cracking, splitting, or chaffing.
Replace if any of these conditions exist.
• Check for leaks at the throttle body and intake manifold.
Exhaust System Maintenance and Inspection
When inspecting the exhaust system, check the following:
• Inspect exhaust manifold at the cylinder head for leaks
and that all retaining bolts and shields (if used) are in
place.
• Inspect muffler for exhaust leaks. Repair as necessary.
Engine Exterior
Periodically inspect the engine exterior for contamination
and potential damage from dirt, leaves, rodents, spider webs,
insects, etc. and remove.
Service Spark plugs
Changing the spark plugs will help your engine to start easier
and run better.
1. Clean area around spark plugs.
2. Remove and inspect spark plugs.
3. Check electrode gap with wire feeler gauge and reset
spark plug gap to recommended gap if necessary (see
Specifications).
4. Replace spark plugs if electrodes are pitted, burned
or porcelain is cracked. Use the recommended
replacement spark plugs. See Specifications.
5. Install spark plugs and tighten to 180 in/lbs (20 Nm).
When all engine servicing is complete, replace 15 Amp fuse
in control board and reset exercise timer.
Clean Air Cooling System and Oil Cooler Fins
Over time debris may accumulate in cylinder cooling fins
and cannot be observed without partial engine disassembly.
Unobstructed air flow is critical for correct generator
operation. For this reason, we recommend you have an
authorized service dealer clean the cooling system per
recommended intervals (see Maintenance Schedule in the
Maintenance section). Equally important is to keep top of
engine free from debris. Make sure the oil cooler fins are free
of dirt and debris. Also see Cleaning.
When Calling for Assistance
you must have the following information at hand if it is
necessary to contact a local service center regarding
service or repair of this unit:
1. Obtain the unit Model Number and Serial Number from
the unit ID label. See Controls for location of the label
or refer to the information recorded on the inside from
cover of the installation manual.
2. Obtain the engine identification numbers from the
engine label. See the operator's manual for location of
this information.
Storage
The home generator system is designed for long term service
as a backup generator. There is no need to take any storage
precautions. However, if it becomes necessary to take the
system out of service for an extended period, call Technical
Services at 888 575-8226, between 8:00 AM and 5:00 PM CT
for specific recommendations.
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