I have an old JD RX-75 riding mower that was running well?
 
                My old JD RX75 lawn mower ran well, now it doesn't crank.  I changed battery, solenoid, and relay to no effect.  The relay makes a clicking noise when I attach the battery cables, and there is nothing when I short the solenoid connections, i.e., there is no spark and no attempt to start.  Any ideas?
            
             Carl Olson
            
 September 2006