Abstract: The present invention discloses a 360 degree rotatable trimmer assembly 10 mounted on the side of a conventional lawn tractor 12 having a plurality of cutting members 26, 92 mounted onto a platform 70 being connected to a motorized rotatable shaft 50 by a plurality of belts 32 and pulleys 34. A bumper guard ring is 28 provided above each cutting member 26, 92 to act as a guide around obstacles such as trees and poles 16. A multiple lobed cam member 56 having a communicating cam roller 78 is provided for properly re-positioning the platform 70 following rotation of the platform around an object 16. A gasoline motor 24 and alternatively a hydraulic motor 104 are disclosed for providing power to the rotatable shaft 50.