All steel construction. Gas and LP GM 55HP 1.6 liter tier III, 4 cylinder engines or Diesel, Kubota 37.5 HP liquid cooled 3 cyl. Superior quality, environmentally compliant and a versatile choice of power source to fit any working environment. A roomy, open cockpit with extra comfort and convenience features for less operator fatigue and longer run times. Heavy duty design features a massive one-piece, unitized 1/4" thick steel frame. This rugged style construction provides a longer more durable machine life. Steel debris hopper: 16 ft3. Debris hopper: 1200 lb capacity.