... /18hp 4wardGN model walking tractor,diesel engine12hp/15hp/18hpMODEL GN-12 Overall dimensions:(L×W×H) 2950×980×1240mm Wheel tread ... 570,630,690,750,810mm Tyres 6.00-12 Ground clearance 210mm Working weight (with rotary tiller)500kg Speed ... Forward 1.39, 2.47, 4.15, 5.14, 9.12, 15.30 (km/h) Reverse 1.10, 4.10 Turning ...