The fuel pump has three ports: the gas in port, the gas out port, and the pulse port. The pulse port is connected to the engine crankcase by a small rubber tube. As the engine runs, air inside the crankcase alternately pressurizes and depressurizes the air in the tube. Manual Carburador Weber 460 Gasolina. This pressurized air moves a diaphragm inside the pump and pumps the gas. If the engine oil is overfilled, oil can enter the pulse port line, preventing it from working properly.

Download or purchase owners manuals for Honda Lawn Mowers. Lawn Mowers Owner's Manuals Back. To find an owner's manual for your Lawnmower. Honda Lawn Mower HRU216M1 Owner’s Manual. The fuel valve must be ON to start and operate the mower. The fuel valve should be kept OFF when the mower is not in use. Free download honda easy start gcv160 lawn mower manual PDF PDF Manuals Library. Manual Description: 341, lead download honda easy start gcv160 lawn mower manual in.

The fuel pump also has two small check valves on the input and output ports. The check valves prevent fuel from reentering the gas tank. These check valves can fail. To determine if the fuel pump is defective, check the pulse port line, check valves, and the diaphragm inside the pump.

The fuel pump is not repairable—if the fuel pump is not working properly, you must replace it.