Honda EU26i Owner's Manual page 56

3. Once a month, recharge the battery.
4. Change the engine oil.
5. Remove the spark plug and pour about a tablespoon of clean engine
oil into the cylinder. Crank the engine several revolutions to
distribute the oil, then reinstall the spark plug.
6. Slowly pull the starter grip until resistance is felt. At this point, the
piston is coming up on its compression stroke and both the intake
and exhaust valves are closed. Storing the engine in this position
will help to protect it from internal corrosion.
(EU30is only)
STARTER GRIP
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