Cummins/Onan M-1600-2 — Changing Engine Oil and Oil Filter
Maintenance
For the Cummins/Onan M-1600-2, from the Cummins/Onan operator's manual.
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Before you start
- Use only Onan approved oil filters
- Hot oil can cause severe personal injury
Procedure
- Place pan under oil drain valve, open valve, drain oil, close valve
- Place pan under filter and turn counterclockwise to remove
- Coat new oil filter gasket lightly with engine oil and install
- Turn clockwise until gasket just touches mounting base, then tighten additional half turn
- Wipe up any excess oil
- Remove oil level indicator and replenish oil at fill port
- Replace indicator fully in and tighten securely; dispose of old oil and rags
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Oil capacity 4 U.S. quarts (3.8 l) including filter
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.