CHENGU Fuel Pump Replacement 4-Pack for Lawn Mowers — 8mm Ports, Direct-Fit for 491922/691034/692313

CHENGU 4 Pcs Fuel Pump set — replacement fuel pumps designed to restore fuel delivery on compatible walk-behind and push mowers.

These CHENGU replacement fuel pumps come as a set of four black pumps engineered to fit a range of common lawn mower models. Each pump has standardized inlet, outlet and vacuum ports about 8 mm in diameter and a front mounting hole spacing close to 70 mm, so they’re intended as direct-fit service parts for models listed by part numbers 491922, 691034, 692313, 808492, 808656 and 808281. Selling multiple units in one pack gives you spares for routine maintenance or quick swaps when a pump shows signs of wear.

How do I confirm these pumps fit my mower?

Measure the pump on your mower and compare key dimensions: port diameters and mounting hole spacing. If your mower’s fuel inlet, outlet and vacuum ports are roughly 8 mm and the two front mounting holes sit about 70 mm apart, these CHENGU pumps are likely compatible.

• Check inlet/outlet/vacuum holes — approximately 8 mm diameter.
• Confirm front hole center-to-center distance — ~70 mm.
• Match your mower part numbers: 491922, 691034, 692313, 808492, 808656, 808281.
• Keep an old pump handy to compare shapes and mounting tabs before ordering.

What are the practical benefits of buying a 4-piece set?

Buying four pumps at once saves time and money compared with buying single replacements. You’ll have spares for future failures, the ability to replace pumps on multiple machines, or share units with friends and family who use the same mower models.

• Immediate spares reduce downtime during the mowing season.
• One purchase covers several small engines or multiple repairs.
• Bulk pack offers cost savings per pump vs buying singly.
• Store extras for scheduled maintenance and long-term readiness.

How easy is installation and what tools will I need?

Installation is straightforward for anyone comfortable with basic small-engine maintenance. You’ll typically disconnect fuel lines and vacuum tubing, remove a few fasteners, and swap the old pump for the new CHENGU unit. No advanced tools or specialized skills are required.

• Basic hand tools: screwdriver, pliers, wrench set.
• Drain or clamp fuel lines to avoid spills.
• Inspect tubing and clamps and replace if brittle or corroded.
• Test for secure seals and proper vacuum connection after fitting.

What should I check after replacing the fuel pump?

After installing a CHENGU fuel pump, run the engine briefly to confirm steady fuel flow and absence of leaks. Listen for consistent engine idle and response; any sputtering or fuel odor indicates a loose hose or seal that needs rechecking.

• Start engine and observe for stable idle and acceleration.
• Inspect all hose connections for fuel leaks.
• Re-tighten clamps and ensure vacuum hose is secure.
• If problems persist, re-verify pump orientation and port alignment.

Who is this for? The CHENGU 4 Pcs Fuel Pump kit is aimed at homeowners, landscapers and small-engine hobbyists who maintain multiple mowers or prefer having replacement parts on hand. It’s also useful for repair shops working on common walk-behind models that use the listed part numbers. If you value quick repairs, reduced downtime and simple compatibility checks, this multi-pack gives reliable, affordable spare pumps to keep your outdoor equipment running.