oil weight, and capacity, belarus 250 as

[taterpuller]

Could someone tell me what weight oil i need to use for a belarus 250 AS and how many quarts to use, I just bought a belarus and it's my first tractor. I know they're not the greatest quality of tractor but i'll only use it about 4 times a year plus I got a pretty good deal on it I think. Any help would be greatly appreciated.

Any other things I should do or look out for would be nice too, thanks!