Magnum MLT4000S — Changing the Engine Oil
Maintenance
For the Magnum MLT4000S, from the Magnum operator's manual.
Applies to: Magnum MLT4000S, Generac GN-220 engine
Before you start
- DO NOT OVERFILL the crankcase.
Parts for this job
- 70185 Oil filter Amazon eBay $18.99 NAPA $9.09 KuduParts $11.00
Part numbers from the service-parts list for Magnum MLT4000S. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Remove the three sets of hardware securing the engine cover to the engine.
- Remove the brass oil drain set screw located on the bottom of the engine compartment and drain the oil into an approved container.
- Remove the oil filter, located on the front side of the engine compartment.
- Apply a light amount of new oil to the rubber gasket of the new oil filter.
- Tighten the oil filter until the rubber gasket makes contact with the engine, then tighten 3/4 to 1 full turn more.
- Remove the oil fill cap and slowly add oil.
- Replace the engine cover and tighten the three sets of hardware removed in step 1.
- Run the engine approximately five minutes, turn it off, allow the oil to settle, and check the dipstick.
Specs & values
- Oil grade 5W-30 Amazon eBay $47.95
- Oil capacity w/ filter change 24 oz (710 mL)
Full service-parts list: Magnum MLT4000S →
Source: Magnum 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.