Honda HS624 Owner's Manual page 46

DRAIN KNOB
3. Clean the sediment cup.
a. Turn the fuel valve OFF, remove empty and clean the fuel strainer cup.
b. Reinstall the cup and packing and tighten securely.
O-RING
SEDIMENT CUP
4.Remove the spark plug and pour a tablespoonsful of clean motor oil into
the cylinder. Pull the starter rope slowly two or three times to distribute
the oil.
Reinstall the spark plug.
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