Cummins/Onan — Spark Arrester Cleaning Procedure
Maintenance · exhaust muffler spark arrester
From a Cummins/Onan operator's manual — check it applies to your exact model before use.
Applies to: Cummins/Onan NHEL
Procedure
- Remove the 1/8-inch pipe plug from the bottom of the muffler.
- Run the generator set with load for five minutes.
- Stop the generator set and allow the muffler to cool.
- Replace the pipe plug in the muffler.
Full service-parts list: Cummins/Onan NHEL →
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.