Cummins/Onan — Spark Arrestor Cleaning
Maintenance · Exhaust muffler spark arrestor
From a Cummins/Onan owner's manual — check it applies to your exact model before use.
Applies to: Cummins/Onan HDKA
Procedure
- Remove the 1/8 inch pipe plug in the bottom of the muffler (Figure 7).
- Run the genset for five minutes at full load.
- Replace the plug when the muffler has cooled down.
Full service-parts list: Cummins/Onan HDKA →
Source: Cummins/Onan owner'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.