Fuel System inspection and Maintenance
natural Gas / Propane Fuel System
The fuel system installed on this industrial engine has been
designed to various standards to ensure performance and
reliability. To ensure compliance to these standards, follow the
recommended maintanence schedule contained in this section.
Pressure Regulator Maintenance and inspection
If the regulator fails to operate or develops a leak, it should be
repaired or replaced with the OEM recommended replacement
parts.
Venturi / Throttle control Device Maintenance and
inspection
NOTICE The venturi and throttle body components have been
specifically designed and calibrated to meet the fuel system
requirements of the engine.
NOTICE A dirty air cleaner may significantly alter the venturi
performance.
When inspecting the venturi and throttle body, check for the
following items:
	
•	 Leaks	at	all	fittings.
	
•	 Ensure	the	venturi	and	throttle	body	are	securely	
mounted.
exhaust System Maintenance and inspection
When inspecting the exhaust system, check for the following
items:
	
•	 Inspect	exhaust	manifold	at	the	cylinder	head	for	leaks	
and that all retaining bolts and shields (if used) are in
place.
	
•	 Inspect	manifold	to	exhaust	pipe	fasteners	to	ensure	
they are tight and that there are not exhaust leaks.
Repair as necessary.
engine exterior
Periodically inspect the engine exterior for contamination
and potential damge from dirt, leaves, rodents, spider webs,
insects, etc. and remove.
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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.
When inspecting the regulator, check for the following items:
	
•	 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.
	
•	 Inspect	air	cleaner	element	according	to	the	
recommended maintenance schedule found in this
section.
	
•	 Check	fuel	lines	for	cracking,	splitting,	or	chaffing,	
Replace if any of these conditions exist.
	
•	 Check	for	leaks	at	the	throttle	body	and	intake	
manifold.
	
•	 Inspect	exhaust	pipe	connection	for	leaks.	Repair	as	
necessary.