How to Install Your STIHL iMOW® Robotic Lawnmower | STIHL iMOW® Installation Guide | STIHL GB. The iMOW® 4 EVO is part of the latest generation of iMOW® robotic mowers from STIHL. The iMOW® is installed by laying or burying a thin wire around the outer edge of your lawn and around obstacles in your garden, such as shrubs, trees, flower beds or water features.