model wp20 wp 30 connection dimension 50mm 80mm flow 30m3/H 60m3/H suction height 7m 7m lift height 30m 30m type single-cylinder,4-stroke OHV borexstroke 68*45mm cooling system forced wind-cooling lgnition system transistorized magneto ignition fuel tank capacity 3.6L rating power 3.6kw/3600rpm