1998ford f150 starter won't crank or turn over.full charged battery.starter ingages when crossing small hot bolt with upper larger bolt.clicks with ignition.

I have 1979 F250 wth a new starer and solinoid, It fired over and started on the first time, After that It won't crank over enough to crank over again to start.
Any Help on this situation ?
Charles

First make sure you can turn engine over with a socket and that it is not seized. Second if engine checks out fine does the starter just click with the ignition key? If it does perform what is called a voltage drop test on the starter cables. Connect a volt meter on each end of the cable you are testing you should read no more that a half a volt drop when loading the circuit. If cables check out fine pull the starter and have it bench tested at an auto parts store. But be carefull bench testing can show a starter is ok with out putting a load on it, if it still shows good on the bench you still may need to replace it. If you don't get a click with the key check for 12 volts at the starter connector unplugged, if no trace starter wire noting color code back through the starter safety switch back to the ignition switch.