Air cooled 2 stroke 1000 watt brushless generator needs oil?

Most 2 stroke engines require only oil mixed with the gasoline. However, if the engine has a sticker that says to put oil in the crankcase, it is possible that the engine requires both oil in the fuel and in the crankcase. If there are stickers that you can read, you may be able to determine the brand and model of the engine. If you can do that, you may be able to find detailed instructions on the internet or contact the engine manufacturer by phone.

Is it possible that this is not the original engine that came with the generator? If the sticker that says to put oil in the crankcase is not on the engine itself, it may refer to a previous engine. It is also possible that the generator builder uses both 2 stroke and 4 stroke engines and someone put an extra sticker on en error.

There should probably be some kind of oil-filled fluid drive or torque converter between the crankshaft of the engine and the generator head, so that you're not turning the generator when starting the engine. Some use centrifugal clutches, and others use fluid drives.

A 2 stroke generator....What is that ??

Why the thumbs down ?.The question is ambiguous.

A 2 stroke is an Engine...A Driver, not necessarily of a generator..

A Generator is a Driven machine that produces electricity...