Hayter Harrier 56 petrol roller self propelled lawn mower

A Hayter Harrier 56 self propelled lawnmower, starts and runs. History unknown, the body has been painted, with cracks to both front wheels and the top of plastic on grass box. Runs and self propelled works, however on idle/slowest revs engine cuts out.

May need service, carb clean. There is a battery and key but don't know what they do. Please make sure to checdk out all images for a closer look at the item and condition.

---