I want to fit a fuel shut off valve to a Mercruiser 5l 305cdi engine. Engine Ser. No OM068280. This is a carb model with thunderbolt V Ignition. Unfortunately don't have access to the boat at the moment so not sure of fuel pipe diameter. Had considered fitting the valve at the inlet to the carb, can anyone advise firstly if this is a suitable location and secondly the make / model of a suitable valve. Help appreciated.
