Dosko 691SP-20HE Self-Propelled Stump Grinder with Honda GX630 Engine Gas 20 HP and 14" x 3/8" Cutter Hydrostatic Drive Electric Start NewMake short work of stumps with comfort and ease with the Dosko 691SP 20HE self propelled electric start stump grinder. The hydrostatic drive system allows for easier navigation on the job site and during transportation. This stump grinder also features a five position handlebar adjustment, and a Honda GX630 electric start engine. It comes standard with Greenteeth which can be rotated in three, 120 degree increments for a fresh cutting edge in minutes.