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Cummins/Onan — 14

For these Cummins/Onan models: EGMBT, EGMBT (P4500), EGMBU, EGMBU (P5000E), EGMBU (P5000e), P24500 (Spec A), P5000e (Spec A).

Applies to: Cummins Onan Egmbt, Cummins Onan Egmbu

Procedure

  1. 4. Starting and Running the Generator Set Before the first start of the day and after every eight hours of operation, perform GENERAL INSPECTIONS and any scheduled maintenance due, as indicated in the Maintenance Schedule. If the generator set has been in storage, return it to service as instructed in the Out-of-Service Protection section. WARNING: Moving parts can cause severe personal injury or death. Hot exhaust parts can cause severe burns. Make sure all protective guards are properly in place before starting the generator set. WARNING: A non-functioning GFCI, or a damaged or overloaded extension cord, can cause electrocution or fire. Test the GFCI receptacles for proper operation. Make sure all extension cords are in good condition, are rated for outdoor use, have the proper plugs, and have the proper amp and voltage ratings. WARNING: Gasoline is highly flammable and explosive and can be ignited by static electric sparks caused by fuel flowing through a service station pump nozzle which can result in severe personal injury or death. Never fill the generator set with a service station pump nozzle. Instead, fill a safety tank sitting on the ground and then slowly transfer fuel to the generator set from the safety tank.
  2. 1. Locate the generator set outdoors in a dry, level place and chock the wheels, if so equipped.
  3. 2. Check fuel and oil levels, and fill as necessary. WARNING: If the generator neutral supply is not grounded to earth, the user may be left without ground fault protection, which could result in serious personal injury or death. Always make sure the generator neutral supply is grounded to earth before operating the generator set.
  4. 3. Connect the grounding lug to earth ground in accordance with the local electrical code.
  5. 4. Test the GFCI for proper operation.
  6. 5. Make sure that all extension cords are in good condition, are rated for outdoor use and have the proper amp and voltage ratings, and that they are equipped with proper plugs having grounding blades.
  7. 6. Make sure all tools and appliances have been turned off or are disconnected.
  8. 4.3 Starting the Generator Set WARNING: Operating a generator set in an inappropriate environment can result in a fire which can result in severe personal injury or death. Do not operate the generator set in hazardous environments where it could ignite flammable gasses or combustible materials. To avoid the risk of electrocution, never operate the generator set in rain or snow or when it is sitting on wet ground. Be careful not to touch or allow any combustible materials to touch the muffler which can get very hot. CAUTION: The voltage surge at startup can damage appliances such as TVs, microwave ovens, computers, etc. Be sure to disconnect all appliances before starting the generator set. 914-0508 (Issue 5) 15

Source: manual:914-0508 Onan EGMBT P24500 EGMBU P5000e (spec A) Portable Genset Service manual (10-2009).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.