A first class fuel system contains a primary and a secondary fuel filter.
A secondary filter is standard on every Craftsman Marine engine, but the primary filter – which preferably also contains a water separator – is often included in the fuel system as an extra. If this filter/water separator is not included, the risk of the secondary filter becoming clogged is much higher. The proper functioning of the fuel lift pump can also be hindered by even the smallest dirt particles in the fuel. Replace the filters according to the prescribed service intervals. A filter costs almost nothing compared to a malfunctioning engine and all the associated risks.