Engine Manual

28 TP-7095 4/18
3.4 Periodic Maintenance Schedule
Engine parts experience wear at different rates. Technical maintenance tasks, therefore, are required at different intervals
throughout the life of the engine. Tasks performed after the first 10 hours of operation, for example, must be repeated after 20
hours, 30 hours, and so forth. Perform and repeat these tasks according to the periodic schedule below.
Daily (Before Starting)
Check the engine oil level and replenish as needed.
Check the coolant level and replenish as needed.
Check for fluid leaks and the tightness of clamps and hoses.
Check that all shrouds, equipment covers, and guards are in place and securely fastened.
Check for loose electrical connections such as battery, alternator, ignition coil, or spark plug wires.
Check the battery connections for tightness and signs of corrosion.
Check for leaks, hissing, and gas odor.
Weekly or Every 10 Hours of Operation
Check the main tank supply level (LPG only).
Quarterly or Every 20 Hours of Operation
Check the battery voltage; charge or replace as needed.
Check the air cleaner element (refer to the Operation Manual of the equipment using this engine). ♦
Check the fuel lines and connections.
Yearly or Every 120 Hours of Operation
Check and clean the radiator exterior.
Check the battery fluid level.
Check the battery for cracks and corrosion.
Clean battery cables. ♦
Check the DEPR fuel pressure.
Check the drive belt for cracks, breaks, or splitting.
Yearly or Every 150 Hours of Operation
Change the engine oil and filter. ♦
Inspect crankcase breather hose.
Check spark plugs.
3 Years or Every 400 Hours of Operation
Change the air cleaner element (see equipment operation manual). ♦
3 Years or Every 500 Hours of Operation
Check the air induction (air-fuel mixer, throttle body, DEPR, intake elbow, intake manifold) for leaks.
Check the intake manifold for vacuum leaks.
Check the spark plug and electrode gap. Adjust gap if necessary. Replace the spark plugs(s) if discolored or damaged..
Check the spark plug wires for cuts, abrasions, or hardening and replace as needed.
Check the ignition coil wires and replace as needed.
Change the engine coolant. §
Check the condition of the hoses and replace as needed.
5 Years or Every 2000 Hours of Operation
Check exhaust manifold for leaks and replace as needed.
Check the exhaust piping for leaks.
Check HEGO (oxygen) sensor connections and wires.
Inspect wiring for cuts, abrasions, or corrosion.
Inspect vacuum lines and fittings for cracks, breaks, or splitting and replace as needed..
Check the fuel shutoff valve operation.
Change the spark plug wires.
Change the distributor cap and rotor.
♦ Service more frequently under extremely dusty/dirty conditions.
§ Long-life coolant is recommended. When long-life coolant is used, the change interval is 5000 hours or 5 years. Do not mix coolant
types.