In India harvesting of grass and forage crop is done mostly by manually. A flail type forage harvesting machine mounted on wheel barrow powered by 1.45 Kw petrol engine was developed and evaluated for its suitability for harvesting grass in stony and undulating areas. It consists of a flailshaft, power transmission unit and a single wheel barrow. The flails are made up of commercially available chain of 6.25 mm M.S. rod and V-shaped knife pieces are attached at the end of chain to improve the cutting efficiency. The field capacity of the machine was 0.05 ha/hr as compared to 0.01 ha/hr observed with manual harvesting operation. The cutting efficiency was optimum with a flail shaft speed of 1200 rpm. The maximum percentage of cut of 91% was obtained at 50 mm ground clearance and at a forward speed of 0.9 km/hr. The average fuel consumption of the machine was 0.7 Itr/ha. The cost of harvesting of grass/ha was Rs.493 and Rs.245 with the use of machine and manual labour, respectively.