Hyundai HG4050 User Manual page 48

Long Term Storage
Before storing the generator set for an extended period:
Ensure that the storage area is free of excess humidity and dust.
Drain the fuel tank and the carburetor.
To prevent corrosion, coat screws and exposed metal with anti-rust oil
at least twice per year.
1.
Drain off the gasoline from the fuel tank, and store in a suitable container.
2. Turn the fuel switch to OPEN and loosen the carburetor drain bolt to
discharge all gasoline from inside of the carburetor.
3.
Take off the spark plug cap, revolve the engine three or four times by
pulling on the recoil start, discharge the gasoline from the fuel lines.
4.
Turn the fuel switch to CLOSED and tighten the drain bolt of the carburetor.
5. Reinstall the spark plug cap.
6. Change oil while engine is still warm from operation.
7.
Remove the spark plug, and pour a tablespoon of clean engine oil
(10~20ml) into the cylinder. Revolve the engine several times by pulling on
the recoil start to distribute the oil. Reinstall the spark plug.
8.
Pull the starter grip slowly until you feel resistance. At this point, the piston
is coming up on its compression stroke and both the intake and exhaust
valves are closed. This position helps to protect the engine from internal
corrosion.
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