I think that your basic model number is 38608. There were about a dozen different setups for this model. Here is one website that might help you.
http://www.oscar-wilson.com/MANUALS/MURRAY/38608X92C.PDF
Can you get a little better picture of the Murray tag and can you post the model, type and code numbers of the engine. Might be able to back track through the engine numbers to get the exact tractor model number.