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... to make an oil tight joint. This is the only attention likely to be required. The filter con tainer should not be removed or drained, once a new element has been fitted, until element renewal is required. capacity. An A.C. mechanical ‘Y’ type fuel pump, operated by the engine camshaft, draws fuel from the tank and delivers it under pressure to two S.U. type H.l carburetters. Twin ‘pancake’ type air cleaners filter the air to the carburetter intakes. Fuel Pump: This is bolted on the lefthand forward side of the engine crankcase and has a suction pipe from the tank and an outlet pipe to the carburetters. A priming lever is fitted to enable the carburetters to be primed by hand, should the float chambers become dry due to evaporation. If petrol appears to be leaking from the edge of the pump diaphragm, tighten the covers screws alternately. Sometimes such leakage may actually come from one of the pipe unions causing the fuel to run down to the pump and collect around the diaphragm flange. The pump filter should be examined and cleaned if necessary. Access to it is gained by removing the dome cover, after un screwing the retaining screw, when the filter gauze itself may be lifted off its seating. Clean out the sediment chamber and clean the filter gauze in an air jet or petrol. The gasket under the filter cover should be replaced if broken or if it ...