Anyone have a 1993 or 94 Dynamark riding mower? Just bought one. Has no model # on it. 15.5hp Tech eng. 42in?

I just bought it. It has no model or serial number. It has a 15.5 techumseh and a 42 in cut. I need a model number so i can order a belt. can anyone help? i would also like nto find a manual for it.