Filter Replacement
Here's what works for my 3GM30F:A. Be sure primary filter was filled with fuel prior to reassembling (takes 20 oz).B. Open the bleed screw on the secondary fuel filter (one on the engine).C. Pump the handle on the primary filter about 25 times, then secure handle. If this handle appears to be not pumping fuel, it will take about 200 stokes on the fuel feed pump handle to get fuel coming out of the secondary fuel filter bleed screw. Omit this step if no pump handle on primary filter.D. Pump the fuel feed pump handle. Be sure to press down hard during the last ½” of travel…that’s when it is moving fuel.E. Fuel should now becoming out the bleed screw. When it is all fuel and no air close screw and secure.F. Open fuel injection pump bleed screw. Pump fuel feed pump, when it is all fuel and no air (lots of air in here), secure screw.G. Start and check for leaks.