Will a running machine help me loose belly fat?

I have a bad back, so exercises such as sit ups and squats are very difficult and painful for me. My mum recently brought a running machine (not a treadmill), that works your arms and legs. I am quite happy with the size of my arms, and my legs, but not my belly. Will running on the machine every day help me loose my belly fat, or do i need to try something else.