DuroStar DS4000S, User Manual

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Changing the oil
Worn out or dirty oil does not cool the generator properly and can lead to catastrophic engine
damage.
In addition to regular oil changes, it is necessary to drain the oil from the crankcase if it has
become contaminated with water or dirt.
Remove drain plug
Drain oil
Replace drain plug
Using a 10 mm hex wrench, unscrew the oil drain plug, which
is located on the crankcase underneath the oil filler/dipstick
cap.
Allow all the oil to drain from the generator.
Drain oil into an approved oil disposal container. Contact
your local auto parts store for information on oil disposal.
Replace the oil drain plug and tighten with a 10 mm hex
wrench.
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