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Home›Repair guides›Cummins/Onan›Replacing the oil filter

Cummins/Onan GS-107-AC — Replacing the oil filter

Maintenance · Engine

For the Cummins/Onan GS-107-AC, from the Cummins/Onan service manual.

Applies to: Hol-Gar GS-107-AC, Cummins/Onan J120-S/967F engine

Procedure

  1. Place a drip pan below the filter.
  2. Unscrew oil filter counterclockwise by hand or with a filter wrench.
  3. Clean filter mounting area.
  4. Oil the new gasket and install new filter hand tight.
  5. Turn an additional 1/4 turn with a filter wrench.

Tools required

  • Oil filter wrench (box or strap type) Amazon

Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.

Specs & values

  • Hand tight plus 1/4 to 1/2 turn

Full service-parts list: Hol-Gar GS-107-AC →

Source: Cummins/Onan service 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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