consists of four sections of commercial electric over hydraulic pilot actuated a 35 valves one suitable supplier of the valves is commercial suring the valves are also available through commercial suring 39 s distributor component technology of minnesota main boom 14 has an associated pair of hydraulic cylinders 18a and 18b whose piston ends 20a and 20b respectively are pivotally connected to main boom 14 and whose cylinder ends not shown are connected to carrier 12 jib boom 16 also has an associated hydraulic cylinder 22 whose cylinder end 24 is connected to main boom 14 and whose piston end 26 is connected to jib boom 16 actuation of cylinder 22 tends to move jib boom 16 either closer to or further away from carrier 12 the hydraulic cylinders used in the present invention are readily available off the shelf items for example cylinders 18a 18b and 22 may be 4 34 bore by 30 34 stroke hydraulic cylinders having a 2 34 rod supplied by morbark industries the harvester according to the present invention enables a cut tree 28 gripped therein to be rotated about three different axes 30 32 and 34 when the tree is in the vertical position as depicted in fig1 a first pivoting means may rotate.