CHENGU 6-Pack Lawn Mower Fuel Pump Replacement for 491922 691034 — Black 6-Piece Multi-Pack, Diaphragm Fuel Pumps

CHENGU 6-pack lawn mower fuel pumps are replacement diaphragm fuel pumps designed to restore reliable fuel delivery for compatible small engines.

If your mower sputters, won’t start, or has weak fuel flow, a worn fuel pump is a common culprit. This CHENGU set includes six identical black replacement fuel pumps sized for many walk-behind and push mower carburetor systems. The multi-pack lets you replace the failing unit immediately, keep spares on hand for routine maintenance, or share with friends and neighbors who use the same spare part numbers.

Will these fuel pumps fit my lawn mower model?

These pumps are made to match the shape and inlet/outlet spacing of several common aftermarket part numbers. Check the pump dimensions and hole spacing against the pump currently on your mower to confirm compatibility before installing.

• Compatible part numbers: 491922, 691034, 692313, 808492, 808656, 808281.
• Hole diameters: fuel inlet, outlet, and vacuum ports approximately 8 mm each.
• Front-side hole center spacing: about 70 mm between the two mounting/connection holes.
• Inspect shape and mounting points to ensure a direct swap without modification.

How do I install one of these CHENGU fuel pumps?

Installation is straightforward for most hobbyist mechanics with basic tools. You’ll typically remove the old pump from the engine or carburetor assembly, transfer any gaskets or mounting hardware, and secure the new pump in place, reconnecting fuel and vacuum lines.

• Turn off fuel and disconnect the spark plug before starting work.
• Note hose positions, then remove clamps and the old pump carefully.
• Match ports and orientation, install the new pump, and reattach hoses and clamps securely.
• Test-run the engine briefly to check for leaks and correct fuel flow.

Why buy a 6-piece set instead of a single pump?

Buying a multi-pack reduces cost per unit and guarantees spares are available when needed. It’s convenient for households with multiple machines or for maintaining a seasonal service kit to avoid downtime when a pump fails.

• Six pumps in one package for multiple replacements or backups.
• Share extras with family, friends, or neighborhood tool co-ops.
• Handy for preventive maintenance and to extend equipment uptime.
• Cost-effective compared with buying individual pumps separately.

How should I care for or store these replacement pumps?

Store unused pumps in a cool, dry place away from direct sunlight and chemicals to preserve the rubber and plastic components. Before long-term storage on a machine, inspect seals and hoses and replace clamps as needed to ensure leak-free operation.

• Keep in original packaging or sealed container to prevent dust and deformation.
• Avoid prolonged exposure to heat or ozone sources that can degrade rubber parts.
• Replace associated fuel lines and clamps when installing older stored pumps if they appear aged.
• Perform a quick leak and performance check after installation.

Who is this for: The CHENGU 6-pack is aimed at homeowners, small-property caretakers, landscapers, and DIY mechanics who operate push mowers, small tractors, or other outdoor power equipment that use the listed compatible part numbers. If you do routine seasonal maintenance, keep spares on hand, or manage multiple machines, this affordable multi-pack helps minimize downtime and keeps fuel delivery systems working as intended.