15
LPG CERTIFIED ENGINE MAINTENANCE REQUIREMENTS
For maintenance or other work that is not
performed under warranty, maintenance, replacement, or repair of
the emission control devices and systems may be performed by any engine repair establishment or individual.
Perform the following maintenance on the engine at the hours indicated and at equivalent hour intervals thereafter.
This maintenance schedule represents the manufacturer’s recom-
mended maintenance intervals to maintain proper engine/equipment
function. Federal, State, or Local regulations may require additional or
more frequent inspection or maintenance intervals than those speci-
fied above. Check with the authority having jurisdiction for details.
Interval Hours
Daily 1000 1500 2000 2500 3000 3500 4000 4500 5000
General Maintenance Section
isual check for fluid leaks X
Check engine oil level X
Check coolant level X
Change engine oil and filter
Every 100 hours or 60 days of operation
Check LPG system for leaks Prior to any service or maintenance activity
Inspect accessory drive belts for cracks, breaks, splits or glazing X X X X X
Inspect electrical system wiring for cuts, abrasions or corrosion X X
Inspect all vacuum lines and fittings for cracks, breaks or hardening X X
Engine Coolant Section
Clean debris from radiator core
Every 100 hours or 60 days of operation
Change coolant--GM 6277M specification (Dexcool) 50-50
mixture with distilled water
Every 5000 hours or five years
Inspect coolant hoses for cracks, swelling or deterioration X X X X X
Replace coolant hoses and accessory drive bel
Every 2,000 hours or two years, whichever occurs first
Engine Ignition System
Inspect Battery case for leaks or damage X X X X X
Inspect battery cables for damage corrosion or contamination X X X X X
Check all electrical connector retainer locks X X X X X
Replace spark plugs X X X
Inspect crank sensor timing wheel for debris or damage
Every 100 hours or 60 days of operation
Clean ignition coil X X X X X
Check spark plug wires for cuts abrasions or hardening X
Replace distributor cap and rotor X
Replace spark plug wires X
Fuel System Maintenance
Inspect air cleaner
Every 200 hours, or every 100 hours in dusty environment
Replace fuel filters X X X X X
Inspect Shut-off Valve for leaks and closing X X
Leak check fuel lines, regulator, fuel rail and injectors X X
Check air induction and intake manifold for leaks X X
Check manifold for vacuum leaks X X
Drain Regulator oil build up
Every 100 hours or 60 days of operation
Engine Exhaust System
Inspect exhaust manifold for leaks X X
Inspect exhaust piping for leaks X X
Check HEGO sensor connectors and wires for burns, cuts or damage X X
Inspect catalyst for mechanical damage X X
Note that propane engines are designed to operate on HD–5 or HD–10 specification LPG fuel. Fuel other than HD–5 or HD–
10 may cause harm to the engine’s emission control system and a warranty claim may be denied on this basis if operators
can readily find the proper fuel*. Use of any other fuel may result in your engine no longer operating in compliance with CARB
or EPA emissions requirements. * Not Applicable in the state of California.
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