Take cassette out and look up under pan and you will see a white plastic quadrant with gear teeth.This will have jumped teeth as they are now flimsy.Get a small screwdriver and lever downwards and move teeth until back in the correct position.When back and working ok,is put a spot of red paint on corresponding teeth so if it happens again you will know exactly where to put it back to.
Amazing family weekend with old steam engines, classic car displays, market stalls, and full catering and bar. And camping on site - Save £25 by booking in advance.