I have replaced the battery , the solenoid , the key switch, the battery cable! Please help.

Ray,

Why are you replacing all these parts? What situation are you trying to correct.

Did you check the gas level or spray some starter fluid into the carb?:) What engine is installed in the mower?

Yes, RAY, give us more info on what the problem is, then we may be able to help you out.
Murray is no longer a company, they are now owned by briggs and stratton.
(Maybe that taught them a lesson for moving jobs overseas).

Ray,

I received your PM a few minutes ago. I'm posting the in additional information here.

Also, is there any way you can determine what the model number for your mower is?

Information received in a private message:

I think it is possibly a wiring problem I can jump solenoid switch and turn over motor but it still won't start, I think no spark. Ha ! I have no voltage to key switch. Also not sure witch terminal to hook up that in line fuse, it is on a red wire, I think it goes into the motor and it is original motor. Also the previous owner has done some wiring .