The little Massey 35 with the 3 cyl Perkins diesel is one tough critter and like Ford's little diesels sips fuel. The Perkins torque curve peaks at 1000 rpm. Think about that a minute. Idle is 600-800 range and with a curve that low, anything you hook to it will get the tugging of it's life. I got distracted once and ran into a fence post between the engine cowl and front wheel. Thank goodness I got the clutch pushed in fast enough, but the little Perkie was digging 2 trenches and not looking back.