I have a 5 speed ladies step over bike and every so often the chain goes tight and then comes off.?

Question

When I push the bike forward, the pedals turn constantly then it gets harder to push and the chain comes off. This is not a constant problem but occurs too frequently to enjoy going out for a ride.

Answer 1

The drive train is out of alignment. If you have a deraileur at the back it is stopping (assuming it's a click shift type) with the idler pulley misalligned with (i.e. to one side of) the cog and that forces the chain to ride up on the cog (get tight) and then come off.  It's relatively easy to fix (but without details of your setup hard to describe).

I suggest dropping by a bike store ... they will probably fix it free (or for a few $ maximum) unless something is worn/needs replacement.

Answer 2

Yes take it to the mechanics at your local bike store.