With the John Deere tractor engine from Theo Klein, children slip into the role of little mechanics. The detailed engine block in the typical green John Deere design can be assembled and disassembled. Screws, wheels, the steering wheel and other components can be removed with tools and put back together. Integrated light and sound effects make the mechanic experience particularly realistic. The playset with dimensions of 40 x 43.8 x 52 cm playfully promotes an understanding of technology as well as hand-eye coordination. Eight AAA batteries are required to operate the effects.