lawn mower won't start
My riding lawnmower won't crank, the lights won't come on. I swapped out the old battery for a new one, and still nothing. I left the bolts at the store with the old battery, and, found 2 bolts that fit, but, I don't think that's the problem. This is the second time I've had to swap batteries. It hasn't been cranked in 3-4 months. The last time this happened, a friend checked it out, and said it was the battery. It did crank after I replaced it, but, not this time.
What can I, as a determined novice check?