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Home›Repair guides›Cleaning the Spark Arrestor

Cummins/Onan — Cleaning the Spark Arrestor

For these Cummins/Onan models: 2.0 KY, 2.5 KY, 2.8 KY, 2.8KVFA26100K.

Applies to: Cummins Onan 2 0 Ky, Cummins Onan 2 5 Ky, Cummins Onan 2 8 Ky, Cummins Onan 2 8Kvfa26100K

Before you start

  • A hot muffler can cause severe burns. Let the muffler cool down before removing the spark arrestor screen.

Procedure

  1. Loosen the U-bolt clamp that secures the tailpipe to the muffler (inside the genset housing) and move the tailpipe aside.
  2. Remove the screw that secures the spark arrestor tube/screen inside the muffler outlet.
  3. Remove the spark arrestor tube and inspect the screen inside for damage and clogging. Replace if damaged.
  4. Lightly tap the spark arrestor and remove any remaining deposits with a wire brush. Use a commercial solvent to loosen hard deposits. (Carefully follow the solvent manufacturer's instructions and safety precautions.)
  5. Reinstall the spark arrestor and tail pipe.

Tools required

  • Wire brush

Source: manual:981-0153 Onan KV (spec E-K) RV Genset Operator manual (07-2009).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.