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Under hot or dusty operating conditions, some maintenance operations should be performed more frequently. Keep a log of maintenance performed and the hours run. Recording maintenance helps you optimize service life and provides a basis for supporting warranty claims.

Maintenance, replacement, or repair of emission control devices and systems may be performed by any engine repair establishment or individual. However, warranty work must be completed by an authorized Cummins dealer or distributor. In all cases, you should contract a Cummins Dealer and/or certified technician for advice.

General Inspection

Have the generator serviced according to the Periodic Maintenance Schedule included in your operator’s manual. The following are general guidelines for regular inspection.

WARNING: Automatic startup of the generator while performing maintenance, service or inspection can cause severe personal injury or death. Push the control switch to Off and disconnect the negative (-) battery cable from the battery to keep the generator from starting while working on it.

  • Oil Level - Set the genset control to the Off position before checking the engine oil level.
  • Exhaust System - Look and listen for exhaust system leaks while the genset is running. Shut down the genset if a leak is found and have it repaired before operating the genset.
  • Fuel System - Check the fuel supply line and fittings for leaks while the genset is running. Check flexible fuel hose sections for cuts, cracks, and abrasions. Make sure the fuel line is not rubbing against other parts. Replace worn or damaged fuel line parts before leaks occur.
  • Battery Connections - Check the battery terminals for clean, tight connections. Loose or corroded connections have high electrical resistance which makes starting harder. Shut the genset off and disconnect corroded or loose battery cables (negative [-] cable first) and clean and reconnect them as instructed under Battery Care in your operators manual.
  • Mechanical - Look for mechanical damage. Start the genset and look, listen, and feel for any unusual noises and vibrations. Check to see that the genset air inlet and outlet openings are not blocked or clogged with debris. Clean accumulated dust and dirt from the genset. Do not clean the genset while it is running or still hot. Protect the generator, air cleaner, control panel, and electrical connections from water, soap and cleaning solvents.
  • Return the genset control to Auto when finished performing maintenance.
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