X748 Intermittent Starting Problem

I am more betting on the starter relay or solenoid. If the X748 is similar to the One Series, there in a Bosch type relay mounted on a circuit board that is just plug & play and readily available. My 1026R uses three relays, one for the Starter Solenoid, one for the Fuel Shut Off Solenoid and one for the Glow Plugs. These three relays are identical and can be swapped around from one place to the other. The other possibility is the starter solenoid its self. Some of the solenoids can be replaced and others require starter replacement. First thing I would do is swap relays around if the X748 uses them. If the relay is proven bad, any automotive parts store or Wal-Mart should have them on the shelf. I actually found the relays cheaper at my JD Dealer and he is closer than going into town. If the relays prove to be okay, then the Starter Solenoid is the next most likely suspect. I don't think I would go to JD for that part, it was probably made by Denso or Delco-Remy and the numbers on the part should be able to cross reference to a part on line. I would stay away from the Knock-off parts. Found out the hard way with the Cummins in my Motor Home. Knock-off would click several times before starting the engine. Found the Genuine Delco-Remy starter at a Delco-Remy dealer on line for a hundred or so cheaper then Cummins.