You need to get underneath the mower.Look in the front on the bottom of the engine.You will see the engine pulley.On the side of the pulley you will see a bracket that keeps the belt from falling off the pulley.It is help on by two bolts.Take the bracket ...
I have inherited a Craftsman YS 4500 mower. I decided to change the oil ... Secondly, the manual that I received (it had the model #917.28734, is this the right manual?) listed the oil capacity as 60 oz without a filter and 64 oz with a filter change.