Bought with a Mountfield 827M. Needs strong hands to assemble and ended up getting my 80 year neighbour to finish (I'm 71, but had stroke last year) and once we had worked out how to fit it works brilliantly.
After a few weeks, naturally he popped round to see how it was going and would it cut the grass any lower. Moving the cutter down from the second highest to third lowest off I went.
A big bang and the engine stopped. Restarted and behind was the remains of the plastic 'shovel' (mulch plug) for want of a better word. Removing the gadget and picking up several bits off the lawn the rest of the season went well. Last mow now done, heaved numerous bags of grass into bin, I'm ordering a replacement for next year and will be more careful next time!!