On gasoline versions of the Yamaha G2 golf cart, the fuel pump is typically under the seat in the engine/fuel-system area between the fuel tank and carburetor.
G2 • Gasoline versions
Where is the G2 fuel pump?
Typical location: under the seat in the engine/fuel-system area between the fuel tank and carburetor.
Before ordering: Yamaha changed fuel systems across generations; verify the exact model code and year.
How to replace the Yamaha G2 fuel pump
G2 fuel pump specs and hose layout
Fuel system: Low-pressure diaphragm/pulse fuel pump on typical carbureted G-series and early Drive gasoline versions.
Fuel-line layout: Fuel inlet and outlet plus a pulser/vacuum connection on many carbureted Yamaha systems.
Pressure: Low-pressure carbureted system.
Check these before buying a fuel pump
Pulse hose: A split, loose, collapsed or oil-soaked pulse line can stop a good diaphragm pump from operating.
Fuel filter: A restricted filter can mimic a weak pump, especially when the engine idles but starves under load.
Tank vent: A blocked fuel-cap or tank vent can create vacuum in the tank and progressively stop fuel flow.
Fuel hoses: Check for cracks, loose clamps, soft/collapsed hose and air leaks on the suction side.
Pump ports: Confirm inlet, outlet and pulse hoses are connected to the correct ports.
G2 quick check: If fuel reaches the pump inlet but the outlet stays dry while cranking, verify the pulse hose before replacing the pump.
G2 fuel pump troubleshooting
Cranks but will not start
Check for a usable crankcase pulse at the pump and verify fuel reaches the pump inlet.
Starts then dies
Check the tank vent, fuel filter and suction hose for restriction or air leaks before replacing the pump.
Weak under load
A tired diaphragm, leaking pulse hose or restricted filter may supply enough fuel to idle but not enough for acceleration.
Fuel leaking
Replace damaged hose, clamps, pump body or fittings before running the vehicle again.
Yamaha G2 fuel pump FAQ
Where is the fuel pump on a Yamaha G2?
On gasoline versions, the fuel pump is typically under the seat in the engine/fuel-system area between the fuel tank and carburetor. Yamaha changed fuel systems across generations; verify the exact model code and year.
How do you replace the Yamaha G2 fuel pump?
Label the inlet, outlet and pulse/vacuum hoses before removal. Isolate the fuel supply, remove the diaphragm pump from its mount, install the replacement in the same orientation and reconnect each hose to the correct port.
Which hose is the pulse line on the Yamaha G2 fuel pump?
The pulse line is the hose that carries crankcase pressure/vacuum pulses to the diaphragm pump; it is separate from the fuel-in and fuel-out hoses. Trace it back toward the engine/crankcase rather than identifying it by colour alone.
Can a bad pulse hose make the Yamaha G2 fuel pump look faulty?
Yes. A split, loose, blocked or collapsed pulse hose can stop a good diaphragm pump from moving fuel, so inspect that hose before replacing the pump.
Why does my Yamaha G2 run at idle but starve under load?
A weak diaphragm pump, leaking pulse hose, restricted fuel filter, suction-side air leak or blocked tank vent can supply enough fuel for idle but not enough for acceleration.
How can I test the Yamaha G2 fuel pump before replacing it?
Confirm fuel reaches the pump inlet, inspect the pulse hose, then check for fuel output while cranking. If the pump has a good pulse signal and fuel supply but little or no output, the pump becomes the likely fault.
Fuel-system design, pump type, location and specifications can vary by model year, engine and configuration. Before ordering parts or servicing the fuel system, verify the details against the official owner, operator or service manual for your exact vehicle. For the latest official documentation, manuals and model information, visit the manufacturer website: official manufacturer website.