My generator consumes excess fuel, what do i do, i hav taken it for repairs several time, but d problem is nt solved, should i buy another carburetor or is d fault from generator itself. And on a normal ground, how many ours should 1 litre of petrol last, for d small generator. Cos my 1litre=1hour. Or which brand of carburetor is d best for fuel economy, profer a solution please.