The sheet metal and rear links look like a pre 1968.That would have a 233 at 55 PTO hp.After '68 they had a 256 at 67hp and no scoops on the hood.
If it has a inline injection pump,always change the pump oil when you change the engine oil.Premature pump failure will cost you more than you will want.Use the same oil as in the engine.
If it has a inline injection pump,always change the pump oil when you change the engine oil.Premature pump failure will cost you more than you will want.Use the same oil as in the engine.