Whirlpool washer problem

[Georgie]

Hello, I hope someone can help me. We recently bought a Whirlpool LSQ9549LG0 washer, and it's not spinning or spraying the clothes after the wash cycle. Every other cycle works perfectly. The advice that I have found said to shut it off after it drains to see if it will spin, it does. Since the timer is expensive (and I'm getting conflicting opinions from the guy I bought it from) I'm hoping there's a way to be sure it's the timer. Also, I've noticed that the lid, if opened hard, will hit the timer knob and push it in. Could this damage be seen or fixed? Thanks so much.