It is a 903 model. I pulked off the cap. There is a plastic threaded cap and an o-ring. One side you could finger loosen, other side had to be used with a flat head driver. Tightened both of them and it runs perfectly fine. Thanks for the input!
Hey guys first post on this site. Figured I would give a back story to this. Bought a royal vacuu, off ebay. Dont know too much about it. Seller told me it was serviced recently asked if he had any trouble with it. He was a good help considering i never bought one before. Came here in a few...