798653 Carburetor + 491588S 491588 Air Filter Spark Plug Kit Compatible with Briggs & Stratton 698860 791077 790290 693865 697354 698474 791991 Carb New,by LIYYOO

What It Is

This is a complete carburetor and tune-up kit (air filter, spark plug) designed to replace worn-out fuel and ignition components on small engines, primarily in lawn mowers, tractors, and generators that use specific Briggs & Stratton engines.

Fitment & Compatibility

Before buying, verify your engine’s model number (not just the mower brand). This kit fits Briggs & Stratton engines using carburetors 698860, 791077, 790290, 693865, 697354, 698474, and 791991. It also replaces air filter 491588S and spark plug 491588. Common engine series include 500, 550, 575, 600, 625, 650, 675, 700, 725, 750, 775, 800, 850, and 875. Measure your carburetor mounting bolt spacing (about 2.5 inches center-to-center) and check that the air filter housing matches the rectangular shape. This is an aftermarket kit, not OEM Briggs & Stratton—fitment is good for most standard mowers, but double-check your engine’s specific parts list if you have a non-standard deck or a vertical-shaft engine.

Key Things to Know

• Quality: Users report reliable performance after cleaning the carburetor bowl and adjusting the float height (if needed). The spark plug is a standard J19LM or equivalent—works fine for most engines.
• Installation difficulty: Moderate. You’ll need basic tools (screwdrivers, socket set) and the ability to remove the old carburetor, transfer the gaskets, and reattach fuel lines. Expect 30–60 minutes.
• Common gotchas: The carburetor may come with a plastic shipping plug in the fuel inlet—remove it before installation. Also, the air filter is a foam type, not paper; wash and oil it per the instructions. Some users note the gaskets are thin—apply a light coat of oil to prevent leaks.
• No adjustment screws: This carburetor has fixed jets, so you cannot tune the air-fuel mixture. It’s a direct replacement, not a performance upgrade.

Should You Buy It

If your Briggs & Stratton engine is hard-starting, surging, or won’t run due to a gummed-up carburetor, this kit is a solid, cost-effective fix. It’s ideal for DIY homeowners who want a quick, one-box solution for a tune-up, but if your engine has a specific non-standard air filter housing or you need exact OEM fitment, consider the genuine Briggs kit instead.