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What engine oil for my 1997 Yamaha big bear 350

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Hello, I am new to quads, I do not have a manual and I just bought a 97 yamaha 350 big bear. I was going to do some main before really using it. Does anyone know the correct

Engine weight recommended and qty.

 

Thanks, 

Todd

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@MtBob posted a good screen shot of the recommended engine oil. I will just add that I use on my yamaha grizzly, valvoline 4 stroke oil/ATV oil which is 10w-40. Some walmarts sell it

valvoline atv oil walmart

 

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