Cummins/Onan P9500df — Cleaning the Spark Arrestor
Maintenance · Muffler
For the Cummins/Onan P9500df, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan P9500df
Before you start
- Check and clean after every 100 hours of use or 6 months
Procedure
- Generator must be cold to perform this maintenance
- Move to flat, level surface
- Remove 6 screws holding muffler cover in place
- Locate screw on tip of muffler, remove, pull spark arrestor out
- Replace spark arrestor screen if torn/ripped (only use Cummins spark arrestors)
- If not torn, clean using wire brush, commercial solvent, or compressed air
- Install spark arrestor back into muffler, fully pushed in tight on tip
- Replace muffler cover and tighten all 6 screws
Tools required
- wire brush Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Cummins/Onan P9500df →
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.