BioLion Carburetor Kit for 125–140cc Lawn Mower Engines — Fits 09P602/09P702/08P502 with Air Filter & Spark Plug

BioLion 799583 carburetor kit is a complete replacement assembly designed to restore fuel delivery for 09P602/09P702/08P502 and 300E–550EX lawnmower engines, including an air filter and cover for a full tune-up.

When a small engine runs rough, stalls, or struggles to start, the carburetor and associated intake parts are common culprits. This BioLion kit consolidates the carburetor plus essential consumables—fuel lines, gaskets, clamps, filter, primer bulb and spark plug—so you can replace worn components in one repair session. It fits a range of 125cc–140cc mower engines and is offered as a direct-fit substitute for several OEM part numbers; double-check your engine's part code before ordering.

How will this carburetor kit improve engine performance?

Replacing an aging or clogged carburetor restores correct air-fuel mixture and smoother throttle response. The included air filter and new fuel lines help prevent contamination that leads to poor idling and hard starts.

• Restores steady idle and consistent acceleration
• New filter prevents debris entering the carburetor
• Fresh fuel lines and clamps eliminate leaks and vapor lock

Which engines and part numbers are compatible with this kit?

This BioLion assembly is intended for several small engine models including 09P602, 09P702 and 08P502 and mower models labeled 300E, 450E, 500E, 550E and 550EX. It is sold as a replacement for multiple reference numbers—verify your original part to ensure fit.

• Common cross-references: 799583, 590556, 591160, 591109
• Included air cleaner and cover match 799579 and 590581 references
• Works with 125cc–140cc small engine platforms

What comes in the kit and what tools will I need?

The package contains a carburetor plus a selection of replacement consumables so you can complete the repair without sourcing additional parts. Basic hand tools and a simple mechanical skill set are enough to perform the swap.

• Contents: 1 carburetor, 2 fuel lines, 3 gaskets, 4 clamps
• Also included: 1 air filter, 1 fuel filter, 1 spark plug, 1 primer bulb
• Recommended tools: screwdrivers, pliers, spark plug socket, small wrench

Is installation difficult and are replacement parts available separately?

Installation is straightforward for DIYers comfortable with small engine maintenance; the kit’s gaskets and clamps simplify reassembly. If you need individual pieces later, common parts like the air cleaner (799579) and primer bulb have compatible aftermarket equivalents.

• Simple swap: remove old carburetor, install new unit, reconnect fuel and choke lines
• Gaskets and clamps included to reduce air/fuel leaks during reassembly
• Aftermarket cross-references are available for single-part replacements

Who is this for: The BioLion 799583 carburetor kit suits homeowners, landscapers, and small-engine technicians needing a dependable repair solution for 125cc–140cc mower engines. It’s ideal for anyone replacing a worn carburetor and intake components in one service, saving time and ensuring that the engine receives matched parts for better reliability.