Calling owners of Yamaha EF1000i generators.......

I own one of these little beasts (yes I am one of those horrible bar-stools that keeps his beers cold with the aid of a petrol engine to charge my batteries via a apir of 3 stage chargers).

I seem to have filed my owners manual under "L" for "lost" and am in the process of doing an oil change. Trouble is I am not sure what weight the oil needs to be. I have some in the shed that is for my 4 stroke Briggs and Stratton mower, but not sure whether it'd be okay in the genny.

So, if you own one of these gennies could i ask you to check your manual and see if there is any mention of the type of oil to use. I know it holds about 200ml, judging by the amount I have drained out of it.

All answers appreciated......even those from solar-panel devotees...(hahahaha).

Roachie