I have used both electric and manual pumps. don't forget you turned the electric pump on unless you want to take a bath, also don't forget to pull the one way valve while filling a tank used by ys engines while using an electric, talk about major fuel baths you don't know what tube to grab as all that fuel is spurting around. A cheap pump is a cheap pump I have gone trough 3 electrics and 4 hand crank pumps until I found the six shooter hand crank pump which is trully bullet proof but it doesn't pump as fast as the other pumps