Engine Model: GP45 Engine: 4-stroke, Single cylinder, Air cooled engine Max. Output: 2.5HP/3,900RPM Displacement: 45cc(2.7 cu in) Bore x Stroke: 42x36.1mm/1.65inx1.42in Compression ratio: 8.0 : 1 Pump Type: General Purpose Centrifugal, Self-Priming Priming Time: 120 sec.at 16.4ft Drive System: Direct Discharge capacity: 72 gals./min. Suction port diameter: 1.5" NPT Discharge port diameter: 1.5" NPT Total head lift: 125ft. Suction head lift: 26ft. Max. Pressure: 54 psi L x W x H: 450x320x330mm/17.7x12.6x13.0in Net weight: 15.0kg(33.1lb) Net weight: 7.0kg(15.5lb)