This is the Earthquake walk behind trimmer, you can get several Earthquake models/machines. This is made by Ardisam, who have been around since 1960 and seems to have started in the US. This is the 160-cc model and can be had in a Briggs and Stratton model with a 163-cc model. You will see the issue I had with finding the on/off switch. It does a reasonable job of trimming; I have a lot of it.
