Briggs & Stratton Carburetor Overhaul Kit for 16–18 HP L‑head V‑Twin Engines — OEM gaskets, diaphragms & needle valve

The Briggs & Stratton 694056 Carburetor Overhaul Kit is an OEM repair set designed to restore proper carburetor function on select 16–18 HP L‑head horizontal and vertical shaft V‑twin engines.

If your Briggs & Stratton opposed twin cylinder engine is running rough, hard to start, or using more fuel than it should, the issue is often a worn or clogged carburetor. This genuine Briggs & Stratton kit supplies the gaskets, diaphragms, needles and seals engineered to fit the original carburetor configuration on specific 16–18 HP L‑head V‑twin engines. Using an OEM overhaul kit helps ensure parts fit correctly, reduces installation uncertainty, and maintains the engine’s intended performance and longevity when installed properly.

How will this kit improve engine starting and idling?

Replacing aged gaskets, needle valves, and diaphragms in the carburetor restores proper fuel metering and vacuum control so the engine can start more reliably and idle smoothly. Fresh seals stop air leaks and degraded diaphragms that cause inconsistent fuel flow.

• OEM gaskets and seals to prevent vacuum and fuel leaks
• New needle and seat components for accurate fuel metering
• Diaphragms matched to the original carburetor design

Which engines and models are compatible with this overhaul kit?

This kit is intended for select Briggs & Stratton opposed twin cylinder L‑head engines rated roughly 16 to 18 horsepower, used in both horizontal and vertical shaft configurations. Confirm compatibility by matching the engine family and carburetor type in your engine’s parts list or manual.

• Designed for L‑head twin cylinder engines (16–18 HP range)
• Fits both horizontal and vertical shaft mounting setups
• Matches original OEM carburetor configurations for correct fit

What comes inside the 694056 Carburetor Overhaul Kit and what will I need to install it?

The kit contains the common replacement components found in a carburetor overhaul: gaskets, diaphragms, needle valve elements, and seals specific to the OEM carburetor. Basic hand tools, a clean workspace, and patience are required; a repair manual or service diagram helps ensure correct reassembly and adjustment.

• Gaskets and seals manufactured to OEM specifications
• Diaphragms and needle/seat pieces tailored to the carburetor design
• Installation needs: screwdrivers, small wrenches, cleaner, and the engine parts diagram

How does using an OEM Briggs & Stratton kit benefit long‑term engine care?

OEM parts are produced to the manufacturer’s tolerances, which helps maintain the carburetor’s original fuel distribution and mechanical clearances. That consistency reduces the risk of improper fit, premature wear, or fuel system issues that can arise from using generic or mismatched components.

• Parts built to original specifications for accurate fit
• Reduces trial-and-error repairs and potential follow-up service
• Supports predictable engine performance and service life when installed correctly

Who is this for: The Briggs & Stratton 694056 Carburetor Overhaul Kit is aimed at owners and technicians maintaining 16–18 HP L‑head opposed twin engines who prefer OEM replacements for reliability and fit. It’s suitable for lawn care professionals, small engine repair shops, and DIYers comfortable with basic carburetor disassembly and reassembly using the engine’s parts diagram. If you want to restore factory fuel metering and address common carburetor symptoms—hard starts, rough idle, or rich/lean running—this overhaul kit provides the model‑specific components needed for a proper repair.