791889 Carburetor Tune up Kit Compatible with Briggs and Stratton 287707 312777 312707 28Q777 28N707 311707 28P777 Series Engines Parts Carb Replace 698782 499151 693194 With Air Filter

What It Is

This is a carburetor tune-up kit for Briggs & Stratton single-cylinder OHV engines, commonly used on walk-behind mowers, riding tractors, and pressure washers. It replaces the original carburetor assembly and includes a new air filter, gaskets, and fuel-related seals.

Fitment & Compatibility

Before buying, confirm your engine model number (e.g., 28Q777, 28N707, 311707, 312777, 287707, 312707, 28P777). These engines are typically found on 21–42-inch mower decks. The kit replaces OEM carb numbers 698782, 499151, and 693194. Check that your engine uses a side-draft or vertical-shaft carburetor design—this kit fits both. Measure your carburetor mounting bolt spacing (approximately 2.5 inches center-to-center) to verify. Not compatible with horizontal-shaft engines or models with a different carb flange pattern.

Key Things to Know

• Quality concerns: This is an aftermarket kit; some users report gaskets may not seal perfectly, requiring a thin layer of gasket sealant.
• Installation difficulty: Moderate. You’ll need basic tools (screwdrivers, socket set) and should clean the intake port thoroughly. Expect 30–60 minutes.
• Common gotcha: The included air filter may be slightly smaller or larger than OEM—check fitment before final reassembly. Also, verify the fuel bowl gasket is seated evenly to avoid leaks.
• No fuel adjustments: This is a direct replacement carb, not a rebuild kit. If your engine needs tuning, you’ll need separate adjustment tools.

Should You Buy It

If your Briggs & Stratton engine from the listed series is hard-starting, surging, or leaking fuel, and you want a low-cost fix with a fresh air filter included, this kit is a solid value. It’s best for DIYers who can handle basic carburetor swaps and don’t mind occasional aftermarket fitment tweaks. Avoid if you need OEM-level precision or a full rebuild with adjustable jets.