799727 Carburetor Fit for 28N707 28N777 28P777 28Q777 287777 287707 496796 499153 498061 690194 495935 791886 698620 Carb 14hp 15hp 16hp 17hp 18hp Engine

What It Is

This is an aftermarket carburetor designed to replace failed or clogged units on Briggs & Stratton single-cylinder engines commonly used in riding mowers, zero-turns, and lawn tractors from brands like Craftsman, Husqvarna, Murray, and MTD. It’s meant for engines in the 14hp to 18hp range that use a side-draft, fixed-jet carburetor.

Fitment & Compatibility

Before buying, match your engine’s model number (e.g., 28N707, 28Q777) exactly—not just the hp rating. This carb fits specific Briggs & Stratton 280000 and 290000 series engines. Also verify the carburetor mounting flange pattern (two-bolt, 3.5” center-to-center) and fuel inlet orientation (side entry). Measure your old carb’s bowl diameter and throttle linkage style—this unit uses a fixed main jet and a plastic bowl, which may differ from OEM metal bowls. It does NOT fit engines with an adjustable main jet or those requiring a primer bulb.

Key Things to Know

• Quality variance: This is an aftermarket part, not OEM. Some units may have minor casting flash or debris in the bowl—clean it with compressed air before installing.
• Installation difficulty: Moderate. Expect to swap the throttle/governor linkage from your old carb; the new one’s linkage holes may need slight filing for a snug fit.
• Common gotcha: The included gasket may be too thin or misaligned. Use OEM gaskets or a thin layer of gasket sealant to prevent vacuum leaks.
• No adjustability: This carb has a fixed main jet and idle circuit. If your engine runs lean or rich after install, you’ll need to replace the jet (not included) or adjust the governor arm.

Should You Buy It

If you have one of the listed engine models and want a budget-friendly replacement for a carb that won’t clean up or has a warped bowl, this is a solid choice. It’s not for purists or high-performance mowers—expect to do a little tweaking. For the price, it’s a reasonable gamble if you’re handy with a wrench and don’t mind potential minor adjustments.