DUROMAX XP13000HX Service Manual page 27

5.
Drain the carburetor
Remove drain bolt from carburetor and drain small amount
of fuel in carburetor bowl.
6.
Remove spark plug
Remove spark plug as shown in "Spark Plug Maintenance" on
page 18.
7.
Add oil to cylinder
Add 2 tablespoons of 10W-30 motor oil directly into the
spark plug hole, and pull the recoil to lubricate cylinder. After
lubricating cylinder reinstall the spark plug.
8.
Remove battery and charge
Remove the generator battery and place it on a 12V battery
tender indoors.
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