Briggs & Stratton Carburettors
Carburettors regulate air-fuel mixture entering combustion chambers enabling small engine operation. Briggs & Stratton carburettor types include float-style carburettors (Flo-Jet models) using gravity-fed fuel bowls with inlet needles controlling levels, pulsa-jet carburettors utilizing crankcase pressure pulses operating diaphragms pumping fuel through pickup tubes, and modern fixed-jet plastic carburettors with primer bulbs. Lawn mower carburettor components comprise throttle/choke plates controlling airflow, main jets metering fuel delivery, mixture screws adjusting air-fuel ratios, venturi creating vacuum drawing fuel, float assemblies (float-type only), and Welch plugs sealing internal passages. Common failures: varnish buildup clogging jets, stuck inlet needles causing flooding, worn diaphragms losing flexibility. We hold Briggs & Stratton carburettors in stock and sell worldwide.
Available Briggs & Stratton Carburettors
Kit Carburettor Overhaul
594375
Briggs & Stratton
£53.70
Available
Diaphragm Carburetor
270026
Briggs & Stratton
£4.65
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Carburetor Diaphragm
272538S
Briggs & Stratton
£5.05
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Carburetor
597126
Briggs & Stratton
£100.00
In Stock
Carburetor Assembly
84001115
Briggs & Stratton
£55.65
In Stock
Carburetor
84006242
Briggs & Stratton
£72.10
In Stock
Kit Carburetor Overhaul
695157
Briggs & Stratton
£19.20
In Stock
Carburetor
799871
Briggs & Stratton
£46.60
In Stock
Carburetor
299437
Briggs & Stratton
£54.10
In Stock
Carburetor Primer
694395
Briggs & Stratton
£4.30
In Stock
Carburetor
799868
Briggs & Stratton
£31.55
In Stock
Carburetor
597269
Briggs & Stratton
£38.70
In Stock
Frequently Asked Questions
How do you know if your carburetor needs cleaning or replacing?
Clean if engine runs poorly, hard starting, or surging—symptoms indicate clogged jets/passages from varnish buildup or stale fuel. Replace if carburetor body cracked, corroded, stripped threads, warped mounting surfaces, or cleaning fails restoring performance. Modern plastic carburetors ($40-60) make replacement economical versus extensive rebuilding efforts.
What type of carburetor does my Briggs & Stratton have?
Check engine model number for specifications. Float-type carburetors have visible fuel bowl underneath with mounting bolt. Pulsa-jet carburetors mount directly to fuel tank with diaphragm cover on side. Modern plastic carburetors feature integrated primer bulb and fixed non-adjustable jets—identification determines correct parts and service procedures.
Why does my engine only run with choke on?
Choke-only running indicates severely restricted main jet or fuel passages—engine requires extra fuel from choke restriction compensating for inadequate normal fuel delivery. Disassemble carburetor, soak in cleaner, blow compressed air through all passages/jets. If cleaning fails, replace carburetor as internal passages may be permanently blocked.
Can you adjust a Briggs & Stratton carburetor?
Older carburetors have mixture screws (idle and/or high-speed) allowing adjustment—typically set 1.5 turns out from lightly seated. Modern EPA-compliant carburetors have fixed jets with no external adjustments—tamper-proof or absent adjustment screws prevent user modification. Non-adjustable carburetors require replacement if mixture incorrect after cleaning.
How often should carburetors be cleaned?
Clean annually before storage season or whenever performance issues appear—hard starting, rough running, surging indicate cleaning needed. Use fuel stabilizer in every tank preventing varnish formation. Ethanol-free fuel significantly reduces carburetor maintenance frequency. Engines stored with untreated fuel develop varnish within 30-60 days requiring cleaning.