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Home›Repair guides›Cummins/Onan›Cleaning the Spark Arrestor Muffler

Cummins/Onan 4.0BGEFA261 OOL / 4.0BGEFA26100L — Cleaning the Spark Arrestor Muffler

Maintenance

For the Cummins/Onan 4.0BGEFA261 OOL / 4.0BGEFA26100L, from the Cummins/Onan operator's manual.

Applies to: Cummins/Onan EM (SN5782U1G2RA) engine

Before you start

  • A hot muffler can cause severe burns; let the muffler cool down before removing or installing the cleanout plug.

Procedure

  1. Let the muffler cool down before removing or installing the cleanout plug.
  2. Remove the cleanout plug from the bottom of the muffler.
  3. Restart the genset and load it nearly to full power; run about five minutes to expel soot.
  4. Stop the genset, allow the muffler to cool down and reinstall the plug.

Specs & values

  • Run about five minutes under near-full load

Source: Cummins/Onan operator's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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