So you drag a tractor out of the weeds that has sat for who knows how many years. You want to try and fire it up without causing any damage that isn't already there. Do you squirt some oil in the plug holes and let it set a bit? Do you use channel locks on the crank stub and turn it once or twice by hand? Do you drain the old oil and add new or just if it looks contaminated? What tips and tricks are you folks willing to share?