Hyundai HY8500 Hirepro User Manual page 12

WARNING
This machine is shipped WITHOUT OIL and will require filling BEFORE operation.
3.8 The engine requires SAE15W40 oil.
3.9 Place the generator on flat level ground.
3.10 Clean the area around the oil filler.
3.11 Unscrew and remove the oil filler cap/dipstick.
3.12 Slowly fill the engine with oil through the oil filler until it reaches the upper thread of
the filler hole or to the 'FULL' mark on the dipstick.
3.13 Stop filling occasionally to check the oil level.
3.14 Refit the oil filler cap and make sure the cap is tightened.
3.15 You MUST check the engine oil level before starting every session.
12