WHFZN Fuel Pump for Kawasaki FS730V FX751V FX801V FX850V FXT00V - Direct-Fit Replacement 49040-0801 Restores Fuel Delivery

WHFZN 49040-0801 is a direct-fit replacement fuel pump designed to restore reliable fuel delivery for many Kawasaki FS, FX, FH and FD series small engines.

If your Kawasaki-powered mower, generator or utility machine is sputtering, stalling, or showing fuel-flow inconsistencies, a worn or failing fuel pump is a common cause. The WHFZN 49040-0801 replaces several OEM numbers and installs where original equipment pumps were used, providing a practical replacement that fits a wide range of Kawasaki single- and twin-cylinder engines.

Which Kawasaki engines will this pump fit?

This pump is built to be compatible with a broad list of Kawasaki engines used in commercial and residential equipment. It replaces part numbers 49040-0801, 49040-2075, 49040-7001, and 49040-0769, and fits many FS, FX, FH and FD model families.

• Compatible with FS730V, FX751V, FX801V, FX850V, FXT00V models.
• Fits FD731V and a wide range of FH series (FH381V through FH770D).
• Works with many FD/FH/FX engines found in mowers and small equipment.

How will swapping to this WHFZN pump affect engine performance?

Replacing a failing fuel pump typically restores steady fuel pressure and consistent engine running behavior. Once installed, users often notice fewer stalls during load changes and smoother idling because fuel delivery is stabilized.

• Reduces sputtering and hesitation under throttle changes.
• Helps maintain steady idle and smoother acceleration.
• Minimizes fuel starvation during prolonged or heavy use.

Is installation straightforward and what should I check before buying?

Installation is usually a simple mechanical swap if your machine uses the same mounting and connections as the original. Before purchasing, compare part numbers and check mounting points, inlet/outlet port sizes, and fuel line fittings to confirm compatibility.

• Confirm OEM part numbers 49040-0801, 49040-2075, 49040-7001, or 49040-0769 match your pump.
• Inspect fuel line diameters and connector types for direct fit.
• Verify mounting holes and sealing surfaces match your engine housing.

What materials and quality details are important for longevity?

The pump is manufactured to meet the physical fit and functional needs of Kawasaki engines, with attention to compatible materials for fuel resistance and durability. Regular maintenance and clean fuel will further extend service life.

• Constructed using fuel-resistant components for petrol and small-engine conditions.
• Sealing surfaces designed for leak-free mounting when installed correctly.
• Recommended routine checks: fuel filter cleanliness and fuel line integrity.

Who is this for: The WHFZN 49040-0801 fuel pump is intended for owners, mechanics, and service shops maintaining Kawasaki-powered lawn mowers, utility machines, and small equipment that use FS, FX, FH or FD engines. It’s a practical replacement when OEM numbers match, offering an economical option for restoring fuel delivery without buying a new engine or machine. Always verify fit against your engine’s part number list and follow safe installation procedures.