EcoFlow Smart Generator 3000 Dual Fuel Manual page 33

3. Clean the foam filter element with soapy water or a nonflammable solvent,
then dry it. Add engine oil to the foam filter element and squeeze out the
excess oil. The foam filter element should be wet but not dripping oil.
Note: Do not twist the filter element to avoid damaging it.
4. Place the foam filter element into the air filter. Then reinstall the cover to its
original position and press to secure it.
Note: Ensure that the surface of the foam filter element makes close
contact with the air filter, with no gaps between them. Do not start the
generator before reinstalling the air filter, as this may produce excessive
toxic gases and allow foreign objects to enter the engine, potentially
causing damage to the engine block.