... brake failure.Debug method:1, For carburetor car series:(1) Remove the Heat sealing mat between carburetor and combustion chamber, and ... fuel saver.(3) Then adjusting is completed, pinch the special filter to the adjusting nut.(4) Fuel saver is fixed on ... cleaned once at 10,000 kilometers or replaced.2, Remove the filter, use gasoline or cleaning agent to clean or replace it ...