Walker-Turner 700 Series Jig Saw

I recently purchased this from a friend for $50.00. It runs beautifully. There is no model # on it. I have been able to find the instruction sheet No. J.S.73 for the J782 Jig Saw. However, my jig saw must be a different model#, as I cannot find where to lubricate it. There is some oil in it, because some spilled out when I tipped it to the left. Does anyone know where I can get a manual for this jig saw?