The assembly went without problems of equip. However, some time should take before you look for it.
The first use of my long gone vertikutierten, small lawn, which actually mutated to the meadow, was pure joy. The work went on (without mounted collection bin) apace. The scarifier took targeted weeds and moss from the ground. Clear my lawn now looks like something plucked and contains gaps. But there was indeed above the moss. Now I have nachgesäht and hope that nature will do the rest and the surfaces closes.
In a highly verunkrautetem lawn it is useless to work with collection bag. Who wants to constantly mitherumschieben the torn material on the lawn? It's done a lot faster with the work when put together quite the greens after scarifying. For this reason, competitors sell their Verticuteermachines often without collecting bag / -korb.
The criticized by the Stiftung Warentest noise was absolutely bearable.
My conclusion: For small lawns of Scarifier BG-ES 1231 Einhell is highly recommended.