Generac MCG1000MT2 — Changing the Oil

Maintenance · Engine oil and oil filters

For the Generac MCG1000MT2, from the Generac owner's manual.

Applies to: Generac MCG1000MT2, Mitsubishi S12H-Y2PTAW-1 engine

Procedure

1. Ensure the oil drain valve is closed and remove the drain plug from the right side of the skid frame.
2. Attach a drain hose to the bung and route the hose into an approved container.
3. Ensure the oil level controller valve is open; open the drain valve at the engine oil pan.
4. Allow the oil to drain completely into the container.
5. Clean around the oil filters.
6. Using a filter wrench, remove the oil filters, one at a time.
7. Discard the filters and gaskets.
8. Thoroughly wipe off oil on the oil filter mounting surface with a cloth.
9. Lubricate the new gaskets with a thin film of clean engine oil.
10. Install the new oil filters, turning 3/4 to full turn after initial gasket contact.
11. Close the engine oil drain valve and reinstall the plug at the skid frame drain port.
12. Remove the cap from the oil fill port and add fresh oil.
13. Check that the level is between the Full and Add marks on the dipstick.
14. After running the unit, ensure the oil level is at the halfway mark or above in the oil level controller sight glass.

Full service-parts list: Generac MCG1000MT2 →

Source: Generac 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.

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