Replace your ground cable and put the lug end on the top retaining bolt for the starter. Also check and see if it has a factory solinoid wire on it and inspect for wear. If its a newer Toyota and has a low side ground to the head right above the dipstick, check the crimp on it. The factory had issues with hard starts due to a weak ground supply for all of the relays, one of which turns your LP fuel solinoid on. If the solinoid is itermittant, your operators will burn out the starters trying to start it.
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